Hurricane IVAN Preliminary Water Levels Report

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone

final verification All data subject to NOS verification

noaa National Oceanic and Atmospheric Administration US DEPARTMENT OF COMMERCE National Ocean Service Center for Operational Oceanographic Products and Services

CO-OPS Water Level Data for Hurricane IVAN NOAAs Center for Operational Oceanographic Products and Services (CO-OPS) maintains a network of water level gauges along the Atlantic coast and in the Gulf of Mexico During the hurricane season (June through November) CO-OPS personnel actively maintain and monitor theses gauges during storm events Data from these stations can be triggered for real-time monitoring in storm surge mode and accessed at Tides Online (wwwtidesonlinenosnoaagov) or by accessing water level observations on the CO-OPS homepage at httpwwwco-opsnosnoaagov There are approximately 86 water level stations from Wilmington NC to Port Isabel TX that are operated by CO-OPS and through a NOAA partnership with the Florida Department of Environmental Protection (FDEP) Bureau of Mapping and Surveying (wwwdepstatefluslandssurv_map)

CO-OPS personnel actively maintained and monitored water level stations which provided valuable data from 30 water level stations during the 2004 passing of Hurricane IVAN Hurricane IVAN made landfall as a 105 kt Category 3 hurricane at approximately 0650 UTC 16 September near Gulf Shores AL After traveling north through Alabama and on into the midatlantic region remnants of IVAN turned south crossed back over Florida as an extra tropical low reentered the Gulf and made landfall as a tropical depression near Cameron LA around 0200 UTC 24 September IVAN impacted stations from Vaca Key on Floridarsquos southern east coast to Port Isabel in southern Texas

NOAA NOS CO-OPS Hurricane IVAN Report 1

CO-OPS Water Level Data for Hurricane IVAN NOAAs Center for Operational Oceanographic Products and Services (CO-OPS) maintains a network of water level gauges along the Atlantic coast and in the Gulf of Mexico During the hurricane season (June through November) CO-OPS personnel actively maintain and monitor theses gauges during storm events Data from these stations can be triggered for real-time monitoring in storm surge mode and accessed at Tides Online (wwwtidesonlinenosnoaagov) or by accessing water level observations on the CO-OPS homepage at httpwwwco-opsnosnoaagov There are approximately 86 water level stations from Wilmington NC to Port Isabel TX that are operated by CO-OPS and through a NOAA partnership with the Florida Department of Environmental Protection (FDEP) Bureau of Mapping and Surveying (wwwdepstatefluslandssurv_map)

CO-OPS personnel actively maintained and monitored water level stations which provided valuable data from 30 water level stations during the 2004 passing of Hurricane IVAN Hurricane IVAN made landfall as a 105 kt Category 3 hurricane at approximately 0650 UTC 16 September near Gulf Shores AL After traveling north through Alabama and on into the midatlantic region remnants of IVAN turned south crossed back over Florida as an extra tropical low reentered the Gulf and made landfall as a tropical depression near Cameron LA around 0200 UTC 24 September IVAN impacted stations from Vaca Key on Floridarsquos southern east coast to Port Isabel in southern Texas

NOAA NOS CO-OPS Hurricane IVAN Report 1

MAXIMUM OBSERVED WATER LEVELS

Hurricane IVAN which made initial landfall as a Category 3 hurricane on 16 September near Gulf Shores AL was the strongest storm of the season reaching Category 5 strength after it passed over Grenada in the Caribbean The highest maximum observed water level recorded was at Pensacola Fl (2230 m) though this gauge was destroyed by the storm and an exact water level cannot be recovered The next three highest observed water levels were at Dauphin Island (2177 m) Panama City Beach (1963 m) and Cedar Key (1913 m) (Table 1) Water levels at Apalachicola and Panama City were slightly less at 1596 m and 1443 m respectively The remainder of the stations to the east and west of landfall recorded water levels of approximately 0800 m to 1400 m IVAN reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States and made landfall near Cameron LA The highest observed water level during this event was recorded at Galveston Pleasure Pier (1322 m) Freeport and Corpus Christi TX recorded the second and third highest with 1197 m and 1173 m respectively

NOAA NOS CO-OPS Hurricane IVAN Report 2

Table 1 Maximum observed water levels during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-Time

Maximum Observed Water

Level Above MLLW (m)

Maximum Observed Water

Level Above NAVD 88 (m)

Maximum Observed Water

Level Above NGVD 29 (m)

8723970 Vaca Key FL 09-22-04 1006 0569 0162 05898724580 Key West FL 09-14-04 1424 0773 0235 06448725110 Naples FL 09-15-04 1718 1228 0532 09558725520 Fort Myers FL 09-15-04 2042 0829 0511 08698726384 Port Manatee FL 09-15-04 1842 1261 -0147 01228726520 St Petersburg FL 09-15-04 1900 1343 2371 23718726724 Clearwater Beach FL 09-15-04 1754 1509 0964 12278727520 Cedar Key FL W1 09-15-04 1942 1913 1226 14378728690 Apalachicola FL 09-16-04 0654 1596 1364 15378729108 Panama City FL 09-16-04 1212 1443 1273 14178729210 Panama City Beach FL 09-16-04 0600 1963 NA NA8729840 Pensacola FL 09-16-04 0536 2230 2132 NA8735180 Dauphin Is AL 09-16-04 0406 2177 2107 20668737373 Lower Bryant Landing AL 09-16-04 1918 1450 1450 14508744117 Biloxi MS 09-16-04 0330 1240 1240 12408747766 Waveland MS 09-16-04 0648 1450 1384 13398760922 South West Pass LA 09-16-04 0200 1164 1164 11648761724 Grand Isle LA 09-15-04 1706 0875 1041 09488762075 Port Fourchon LA 09-16-04 0654 0965 NA NA8762372 Bayou La Branche LA 09-16-04 0424 0871 NA NA8770570 Sabine Pass North TX 09-22-04 0554 0956 NA NA8770613 Morgans Point TX 09-22-04 1400 1111 NA 11068771013 Eagle Point TX 09-22-04 1400 1156 NA NA8771341 Galveston Bay North Jetty TX 09-22-04 0942 1155 NA NA8771450 Galveston Pier 21 TX 09-22-04 1154 1056 1013 10108771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 1136 11848772440 Freeport TX 09-22-04 0942 1197 NA NA8774770 Rockport TX 09-23-04 1354 0693 0864 NA8775870 Corpus Christi TX 09-23-04 0624 1173 1037 06918779770 Port Isabel TX 09-23-04 0830 0932 0672 NA

Maximum Observed Water Levels Refered to MLLW NAVD 88 and NGVD29

Gauge destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 3

MAXIMUM OBSERVED WATER LEVEL DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0569

0773

1228

0829

1261 13

4315

09

1913

1596

1443

1963

1450

1240

1450

1164

0875 09

65

0871 09

5611

11 1156

1155

1056

1322

1197

0693

1173

0932

22302177

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort Mye

rs FL

Port Man

atee

FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalach

icola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauphin Is

AL

Lower Brya

nt Lan

ding AL

Biloxi

MS

Wavela

nd MS

South Wes

t Pas

s LA

Grand Is

le LA

Port Fourch

on LA

Bayou La B

ranch

e LA

Sabine P

ass N

orth T

X

Morgan

s Point T

X

Eagle

Point TX

Galves

ton Bay

North

Jetty

TX

Galves

ton Pier 21

TX

Galves

ton Pleasu

re Pier

TX

Freeport

TX

Rockport

TX

Corpus C

hristi

TX

Port Isa

bel TX

CO-OPS WATER LEVEL STATIONS

HEI

GH

T A

bove

MLL

W (

m)

LAST RECORDED WATER LEVELGAUGE DESTROYED

DATA INFERRED LEVELS RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

OBSERVED VS PREDICTED WATER LEVELS8729840 Pensacola FL

PEAK ELEVATION NOT AVAILABLE

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

GAUGE DESTROYED

NOAA NOS CO-OPS Hurricane IVAN Report 4

OBSERVED VS PREDICTED WATER LEVELS8735180 Dauphin Is AL

PEAK ELEVATION 2177 m (714 ft) 9-16-04 0406 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8729210 Panama City Beach FL

PEAK ELEVATION 1963 m (644 ft) 9-16-04 0600 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 5

OBSERVED VS PREDICTED WATER LEVELS8729108 Panama City FL

PEAK ELEVATION 1443 m (473 ft) 9-16-04 1212 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

8761724 Grand Isle LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 6

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8747766 Waveland MS

PEAK ELEVATION 1450 m (476 ft) 9-16-04 0648 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 7

OBSERVED VS PREDICTED WATER LEVELS8744117 Biloxi MS

PEAK ELEVATION 1240 m (407 ft) 9-16-04 0330 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8737373 Lower Bryant Landing AL

PEAK ELEVATION 1450 m (476 ft) 9-16-04 1918 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

MAX ELEVATION INFERRED

NOAA NOS CO-OPS Hurricane IVAN Report 8

OBSERVED VS PREDICTED WATER LEVELS8728690 Apalachicola FL

PEAK ELEVATION 1596 m (524 ft) 9-16-04 0654 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Dater amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observer Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8770570 Sabine Pass North TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-14-041200

09-17-040000

09-19-041200

09-22-040000

09-24-041200

09-27-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

NOAA NOS CO-OPS Hurricane IVAN Report 9

OBSERVED VS PREDICTED WATER LEVELS8770613 Morgans Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

OBSERVED VS PREDICTED WATER LEVELS8771013 Eagle Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 10

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

MAXIMUM OBSERVED WATER LEVEL DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0569

0773

1228

0829

1261 13

4315

09

1913

1596

1443

1963

1450

1240

1450

1164

0875 09

65

0871 09

5611

11 1156

1155

1056

1322

1197

0693

1173

0932

22302177

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort Mye

rs FL

Port Man

atee

FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalach

icola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauphin Is

AL

Lower Brya

nt Lan

ding AL

Biloxi

MS

Wavela

nd MS

South Wes

t Pas

s LA

Grand Is

le LA

Port Fourch

on LA

Bayou La B

ranch

e LA

Sabine P

ass N

orth T

X

Morgan

s Point T

X

Eagle

Point TX

Galves

ton Bay

North

Jetty

TX

Galves

ton Pier 21

TX

Galves

ton Pleasu

re Pier

TX

Freeport

TX

Rockport

TX

Corpus C

hristi

TX

Port Isa

bel TX

CO-OPS WATER LEVEL STATIONS

HEI

GH

T A

bove

MLL

W (

m)

LAST RECORDED WATER LEVELGAUGE DESTROYED

DATA INFERRED LEVELS RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

OBSERVED VS PREDICTED WATER LEVELS8729840 Pensacola FL

PEAK ELEVATION NOT AVAILABLE

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

GAUGE DESTROYED

NOAA NOS CO-OPS Hurricane IVAN Report 4

OBSERVED VS PREDICTED WATER LEVELS8735180 Dauphin Is AL

PEAK ELEVATION 2177 m (714 ft) 9-16-04 0406 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8729210 Panama City Beach FL

PEAK ELEVATION 1963 m (644 ft) 9-16-04 0600 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 5

OBSERVED VS PREDICTED WATER LEVELS8729108 Panama City FL

PEAK ELEVATION 1443 m (473 ft) 9-16-04 1212 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

8761724 Grand Isle LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 6

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8747766 Waveland MS

PEAK ELEVATION 1450 m (476 ft) 9-16-04 0648 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 7

OBSERVED VS PREDICTED WATER LEVELS8744117 Biloxi MS

PEAK ELEVATION 1240 m (407 ft) 9-16-04 0330 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8737373 Lower Bryant Landing AL

PEAK ELEVATION 1450 m (476 ft) 9-16-04 1918 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

MAX ELEVATION INFERRED

NOAA NOS CO-OPS Hurricane IVAN Report 8

OBSERVED VS PREDICTED WATER LEVELS8728690 Apalachicola FL

PEAK ELEVATION 1596 m (524 ft) 9-16-04 0654 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Dater amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observer Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8770570 Sabine Pass North TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-14-041200

09-17-040000

09-19-041200

09-22-040000

09-24-041200

09-27-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

NOAA NOS CO-OPS Hurricane IVAN Report 9

OBSERVED VS PREDICTED WATER LEVELS8770613 Morgans Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

OBSERVED VS PREDICTED WATER LEVELS8771013 Eagle Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 10

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

OBSERVED VS PREDICTED WATER LEVELS8735180 Dauphin Is AL

PEAK ELEVATION 2177 m (714 ft) 9-16-04 0406 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8729210 Panama City Beach FL

PEAK ELEVATION 1963 m (644 ft) 9-16-04 0600 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 5

OBSERVED VS PREDICTED WATER LEVELS8729108 Panama City FL

PEAK ELEVATION 1443 m (473 ft) 9-16-04 1212 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

8761724 Grand Isle LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 6

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8747766 Waveland MS

PEAK ELEVATION 1450 m (476 ft) 9-16-04 0648 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 7

OBSERVED VS PREDICTED WATER LEVELS8744117 Biloxi MS

PEAK ELEVATION 1240 m (407 ft) 9-16-04 0330 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8737373 Lower Bryant Landing AL

PEAK ELEVATION 1450 m (476 ft) 9-16-04 1918 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

MAX ELEVATION INFERRED

NOAA NOS CO-OPS Hurricane IVAN Report 8

OBSERVED VS PREDICTED WATER LEVELS8728690 Apalachicola FL

PEAK ELEVATION 1596 m (524 ft) 9-16-04 0654 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Dater amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observer Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8770570 Sabine Pass North TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-14-041200

09-17-040000

09-19-041200

09-22-040000

09-24-041200

09-27-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

NOAA NOS CO-OPS Hurricane IVAN Report 9

OBSERVED VS PREDICTED WATER LEVELS8770613 Morgans Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

OBSERVED VS PREDICTED WATER LEVELS8771013 Eagle Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 10

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

OBSERVED VS PREDICTED WATER LEVELS8729108 Panama City FL

PEAK ELEVATION 1443 m (473 ft) 9-16-04 1212 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

8761724 Grand Isle LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 6

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8747766 Waveland MS

PEAK ELEVATION 1450 m (476 ft) 9-16-04 0648 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 7

OBSERVED VS PREDICTED WATER LEVELS8744117 Biloxi MS

PEAK ELEVATION 1240 m (407 ft) 9-16-04 0330 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8737373 Lower Bryant Landing AL

PEAK ELEVATION 1450 m (476 ft) 9-16-04 1918 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

MAX ELEVATION INFERRED

NOAA NOS CO-OPS Hurricane IVAN Report 8

OBSERVED VS PREDICTED WATER LEVELS8728690 Apalachicola FL

PEAK ELEVATION 1596 m (524 ft) 9-16-04 0654 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Dater amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observer Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8770570 Sabine Pass North TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-14-041200

09-17-040000

09-19-041200

09-22-040000

09-24-041200

09-27-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

NOAA NOS CO-OPS Hurricane IVAN Report 9

OBSERVED VS PREDICTED WATER LEVELS8770613 Morgans Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

OBSERVED VS PREDICTED WATER LEVELS8771013 Eagle Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 10

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8747766 Waveland MS

PEAK ELEVATION 1450 m (476 ft) 9-16-04 0648 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 7

OBSERVED VS PREDICTED WATER LEVELS8744117 Biloxi MS

PEAK ELEVATION 1240 m (407 ft) 9-16-04 0330 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8737373 Lower Bryant Landing AL

PEAK ELEVATION 1450 m (476 ft) 9-16-04 1918 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

MAX ELEVATION INFERRED

NOAA NOS CO-OPS Hurricane IVAN Report 8

OBSERVED VS PREDICTED WATER LEVELS8728690 Apalachicola FL

PEAK ELEVATION 1596 m (524 ft) 9-16-04 0654 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Dater amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observer Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8770570 Sabine Pass North TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-14-041200

09-17-040000

09-19-041200

09-22-040000

09-24-041200

09-27-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

NOAA NOS CO-OPS Hurricane IVAN Report 9

OBSERVED VS PREDICTED WATER LEVELS8770613 Morgans Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

OBSERVED VS PREDICTED WATER LEVELS8771013 Eagle Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 10

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

OBSERVED VS PREDICTED WATER LEVELS8744117 Biloxi MS

PEAK ELEVATION 1240 m (407 ft) 9-16-04 0330 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8737373 Lower Bryant Landing AL

PEAK ELEVATION 1450 m (476 ft) 9-16-04 1918 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

MAX ELEVATION INFERRED

NOAA NOS CO-OPS Hurricane IVAN Report 8

OBSERVED VS PREDICTED WATER LEVELS8728690 Apalachicola FL

PEAK ELEVATION 1596 m (524 ft) 9-16-04 0654 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Dater amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observer Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8770570 Sabine Pass North TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-14-041200

09-17-040000

09-19-041200

09-22-040000

09-24-041200

09-27-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

NOAA NOS CO-OPS Hurricane IVAN Report 9

OBSERVED VS PREDICTED WATER LEVELS8770613 Morgans Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

OBSERVED VS PREDICTED WATER LEVELS8771013 Eagle Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 10

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

OBSERVED VS PREDICTED WATER LEVELS8728690 Apalachicola FL

PEAK ELEVATION 1596 m (524 ft) 9-16-04 0654 GMT

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Dater amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observer Water LevelsPredicted Water Levels

OBSERVED VS PREDICTED WATER LEVELS8770570 Sabine Pass North TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-14-041200

09-17-040000

09-19-041200

09-22-040000

09-24-041200

09-27-040000

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

NOAA NOS CO-OPS Hurricane IVAN Report 9

OBSERVED VS PREDICTED WATER LEVELS8770613 Morgans Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

OBSERVED VS PREDICTED WATER LEVELS8771013 Eagle Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 10

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

OBSERVED VS PREDICTED WATER LEVELS8770613 Morgans Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Heig

ht A

bove

MLL

W (m

)

Observed Water Level

Predicted Water Level

OBSERVED VS PREDICTED WATER LEVELS8771013 Eagle Point TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

Observed Water Levels

Predicted Water Levels

NOAA NOS CO-OPS Hurricane IVAN Report 10

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

OBSERVED VS PREDICTED WATER LEVELS8771341 Galveston North Jetty TX

-0500

0000

0500

1000

1500

2000

2500

09-12-040006

09-14-041206

09-17-040006

09-19-041206

09-22-040006

09-24-041206

09-27-040006

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)Observed Water LevelsPredicted Water Levels

STORM SURGE

Storm surge resulting from hurricane IVAN was greatest at Pensacola (1892 m) though as stated above this value is only a partial record (Table 2) Fifteen miles to the west Dauphin Island recorded a surge of 1885 m (Figure 8) Stations in the region to the west of the storms track such as Biloxi MS Waveland MS and South West Pass LA recorded storm surges of 1001 m 1055 m and 0894 m respectively To the east Panama City Beach recorded a surge of 1623 m and Panama City recorded a surge of 1229 m During IVANrsquos second landfall Eagle Point TX recorded the highest surge at 0596 m The rest of the stations along the Texas coastline recorded similar levels that averaged approximate 05 m

NOAA NOS CO-OPS Hurricane IVAN Report 11

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

Table 2 Maximum observed storm surge during hurricane IVAN

For the purpose of timely release data contained within this report have undergone ldquolimitedrdquo NOS Quality AssuranceControl however the data have not yet undergone final verification All data subject to NOS verification

Station ID Station Name Date-TimeObvserved Water Level

Above MLLW (m)Predicted Water

Levels (m)Maximum Surge (m)

8723970 Vaca Key FL 09-21-04 2354 0366 0179 01878724580 Key West FL 09-14-04 0918 0409 0237 01728725110 Naples FL 09-15-04 1024 0682 0249 04338725520 Fort Myers FL 09-15-04 1724 0629 0219 04108726384 Port Manatee FL 09-15-04 1900 1259 0745 05148726520 St Petersburg FL 09-15-04 1900 1343 0767 05768726724 Clearwater Beach FL 09-15-04 1042 0861 0193 06688727520 Cedar Key FL W1 09-15-04 2348 1183 0357 08268728690 Apalachicola FL 09-16-04 0312 1507 0210 12978729108 Panama City FL 09-16-04 1212 1443 0214 12298729210 Panama City Beach FL 09-16-04 0600 1963 0340 16238729840 Pensacola FL 09-16-04 0536 2230 0338 18928735180 Dauphin Is AL 09-16-04 0406 2177 0292 18858737373 Lower Bryant Landing AL 09-16-04 1830 1442 0155 12878744117 Biloxi MS 09-16-04 0318 1234 0233 10018747766 Waveland MS 09-16-04 0648 1450 0395 10558760922 South West Pass LA 09-16-04 0054 1153 0259 08948761724 Grand Isle LA 09-15-04 1706 0875 0324 05518762075 Port Fourchon LA 09-16-04 0918 0931 0323 06088762372 Bayou La Branche LA 09-16-04 0424 0871 0076 07958770570 Sabine Pass North TX 09-22-04 1754 0742 0291 04518770613 Morgans Point TX 09-23-04 0024 0621 0082 05398771013 Eagle Point TX 09-22-04 1636 1093 0497 05968771341 Galveston Bay North Jetty TX 09-22-04 1542 1036 0463 05738771450 Galveston Pier 21 TX 09-22-04 1554 1005 0430 05758771510 Galveston Pleasure Pier TX 09-22-04 0918 1322 0740 05828772440 Freeport TX 09-22-04 0942 1197 0612 05858774770 Rockport TX 09-23-04 0606 0607 0127 04808775870 Corpus Christi TX 09-15-04 1836 0951 0431 05208779770 Port Isabel TX 09-23-04 2006 0532 0123 0409

Maximum Storm Surge (Greatest Difference Between Observed and Predicted)

Gauge Destroyed Data Inferred

NOAA NOS CO-OPS Hurricane IVAN Report 12

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

MAXIMUM OBSERVED STORM SURGE DURINGHURRICANE IVAN 2 SEPT - 16 SEPT amp TROPICAL STORM IVAN 22 SEPT - 24 SEPT 2004

0187

0172

0433

0410 05

14 0576 06

6808

26

1297

1229

1623

1287

1001 10

55

0894

0551 06

0807

95

0451 05

39 0596

0573

0575

0582

0585

0480 05

20

0409

1892 1885

0000

0500

1000

1500

2000

2500

Vaca K

ey F

L

Key W

est F

L

Naples

FL

Fort M

yers

FL

Port M

anate

e FL

St Pete

rsburg

FL

Clearw

ater B

each

FL

Cedar

Key F

L W1

Apalac

hicola

FL

Panam

a City

FL

Panam

a City

Bea

ch F

L

Pensa

cola

FL

Dauph

in Is

AL

Lower

Bryant

Land

ing A

L

Biloxi

MS

Wav

eland

MS

South

Wes

t Pas

s LA

Grand I

sle L

A

Port Fou

rchon

LA

Bayou

La B

ranch

e LA

Sabine

Pas

s Nort

h TX

Morgan

s Poin

t TX

Eagle

Point T

X

Galves

ton B

ay N

orth J

etty

TX

Galves

ton P

ier 21

TX

Galves

ton Plea

sure

Pier T

X

Freepo

rt TX

Rockp

ort T

X

Corpus

Chri

sti T

X

Port Is

abel

TX

CO-OPS WATER LEVEL STATIONS

STO

RM

SU

RG

E (m

)

LAST RECORDED WATER LEVELGAUGE DESTROYED

SURGES RECORDED FROM SECOND LANDFALL AS TROPICAL STORM IVAN

DATA INFERRED

STORM SURGE AT Pensacola FL 8729840

-1000

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM S

UR

GE

(m)

LAST RECORDED SURGE 1892 m (621 ft)9-16-04 0536 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 13

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

STORM SURGE AT Dauphin Is AL 8735180

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m)

MAXIMUM SURGE 1885 m (618 ft)9-16-04 0406 GMT

STORM SURGE AT Biloxi MS 8744117

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RG

E (m

) MAXIMUM SURGE 1001 m (328 ft)9-16-04 0318 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 14

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

STORM SURGE AT Waveland MS 8747766

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SUR

GE

(m) MAXIMUM SURGE 1055 m (336 ft)

9-16-04 0648 GMT

8760933 South West Pass LA

-0500

0000

0500

1000

1500

2000

2500

09-12

-04 00

00

09-13

-04 06

00

09-14

-04 12

00

09-15

-04 18

00

09-17

-04 00

00

09-18

-04 06

00

09-19

-04 12

00

09-20

-04 18

00

09-22

-04 00

00

Date amp Time (GMT)

Hei

ght A

bove

MLL

W (m

)

NOAA NOS CO-OPS Hurricane IVAN Report 15

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

STORM SURGE AT Panama City Beach FL 8729210

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1623 m (533 ft)9-16-04 0600 GMT

STORM SURGE AT Panama City FL 8729108

-0500

0000

0500

1000

1500

2000

2500

09-12-040000

09-13-040600

09-14-041200

09-15-041800

09-17-040000

09-18-040600

09-19-041200

09-20-041800

09-22-040000

Date amp Time (GMT)

STO

RM

SU

RGE

(m)

MAXIMUM SURGE 1229 m (403 ft)9-16-04 1212 GMT

NOAA NOS CO-OPS Hurricane IVAN Report 16

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

STORM SURGE DURING HURRICANE IVAN Hurricane IVANrsquos initial landfall was made near Gulf Shores AL with winds of 105 kts and barometric pressure of 946 mb (Table 11) The second landfall occurred as a tropical storm near Cameron LA with winds of 30 kts and barometric pressure of 1004 mb IVAN was the strongest storm of the season reaching Category 5 strength after passing over Grenada in the Caribbean IVAN made landfall as a Category-3 hurricane producing surge throughout the Gulf Maximum surge occurred from Naples to Cedar Key FL on 15 September while the storm was 300 miles offshore in the Gulf As IVAN approached the Alabama coast on 916 SW Pass LA was the first station to reach peak surge levels followed by Apalachicola Biloxi and Dauphin Island Surge at Pensacola Panama City Beach and Waveland MS followed just before landfall Surge at Pensacola rapidly increased and though the station was destroyed probably would have stayed elevated for several tidal cycles The surge at Pensacola also coincided with landfall and was accompanied by 50 kt winds out of the northwest (126 degrees) Maximum surge at Dauphin Island coincided with predicted high tide and remained elevated for two tidal cycles The surge at Dauphin though relatively high may not be completely reflective of surge for the affected coastal region given its distance from landfall (17 mi) and its location approximately five miles off the actual mainland Dauphin Island surge was accompanied by 68 kt winds out of the northeast (60 degrees) which may have also retarded surge levels at the location Greater mainland storm surges would have been recorded had the storms track taken it directly into Mobile Bay or farther to the west along the Mississippi Delta into the vicinity of New Orleans Surge levels at stations to the east and west of Pensacola (see Figure 7 shown previously) illustrate that surge levels to the east of the storm in the panhandle of Florida tended to be higher than their counterparts to the west of landfall This emphasizes the importance of both wind speed and direction in determining levels of storm surge during hurricanes Ivan reformed into a tropical depression on 22 September in the Gulf of Mexico after travelling in a circular motion through the southeastern United States During IVANrsquos second landfall near Cameron LA storm surges were significantly less than surge near Gulf Shores AL and averaged approximate 05 m Surge was marginally higher at Eagle Point TX than closer to the site of landfall near Sabine Pass TX and can probably be attributed to local geography more than wind speed (19 kts) or direction (73 degrees)

NOAA NOS CO-OPS Hurricane IVAN Report 17

Table 3 Meteorological factors affecting storm surge during hurricane IVAN STATION LOCATION MAX WIND (kts) MIN PRESSURE (mb) PREDICTED HIGH TIDE MAX LEVEL (m) MAX SURGE (m)Pensacola FL 500 980 NA 2330 1892

91604 500 (126) 09-16-04 0524 NA 09-16-04 0536 09-16-04 0536Dauphin Is AL 680 954 NA 2177 1885

91604 400 (60) 09-16-04 0700 09-16-04 0536 09-16-04 0406 09-16-04 0406Eagle Point TX 250 1006 NA 1156 0596

92204 824 (92) 09-15-05 2318 09-22-02 1226 09-22-04 1400 09-22-04 1636

LANDFALL LOCATION DATE amp TIME (UTC) WIND (kts) PPRESSURE (mb)Gulf Shores AL 09-16-04 0650 105 946Cameron LA 09-24-04 0200 30 1004

STATION LOCATION MAX SURGE (m)Pensacola FL 1892

09-16-04 0536Dauphin Is AL 1885

09-16-04 0406Eagle Point TX 0596

09-22-04 1636

68 kts 60 degrees 974 mb

09-22-04 1636

09-16-04 040619 kts 73 degrees 1017 mb

90 (Eagle Point) 28 (Sabine Pass)

Pressure Wind Speed amp Direction at Water Level Station During Max Surge39 kts 79 degrees 979 mb

09-16-04 0536

( ) Wind direction from which the wind was blowing Station Destroyed

Distance from water level station(s) (mi)17 (Dauphin Is) 36 (Pensacola)

NOAA NOS CO-OPS Hurricane IVAN Report 18