Property of Lear Siegler. T L O ELO 1 Action: The student will interpret the information contained in a surface analysis chart. Condition: Given pertinent

Property of Lear Siegler


ELO 1Action: The student will interpret the

information contained in a surface analysis chart.

Condition: Given pertinent information about surface analysis charts.

Standard: IAW AC 00-45F

SURFACE ANALYSIS CHART

PURPOSE.... TO PROVIDE THE PILOT WITH A GENERAL PICTURE OF THE WEATHER AT A SPECIFIC TIME Property of Lear Siegler

Chart is issued every 3 hours

Information taken from METAR reports

CONDITIONS DETERMINED FROM CHART

1. SURFACE WINDS

2. FRONTAL SYSTEMS

3. PRESSURE SYSTEMS

4. SKY COVERAGE

5. TEMPERATURE AND DEW POINT

6. PRECIPITATION AND OBSCURATIONS

7. STATION PRESSURE

8. PRESSURE TREND (3 Hour)


CLEAR

FEW(1-2 octas)

SCATTERED(3-4 octas)

BROKEN(5-7 octas)

OVERCAST(8 octas)

OBSCURED

SKY COVERMISSING

REF: AC 00-45F

WIND DIRECTION


CALM

05 KNOTS

10 KNOTS

15 KNOTS

20 KNOTS

50 KNOTS

65 KNOTS

WINDSPEED


15

13,

6

315

TEMPERATURE


15

13 6

315,

WEATHER &OBSCURATION


RAIN


RAIN

DRIZZLE

SNOW

ICE PELLETS

HAIL SHOWER

RAIN SHOWER

SNOW SHOWER


T/STORM

FREEZINGRAIN

FREEZINGDRIZZLE

FOG

SMOKE

HAZEProperty of Lear Siegler

15

13,

6

315

DEWPOINTProperty of Lear Siegler

15

13,

6

315

STATION PRESSURE


1. STATION PRESSURE CORRECTED TO SEA LEVEL2. SHOWN IN HECTOPASCALS / MILLIBARS

1013.2 = 132

986.6 = 866


15

13,

6

315

PRESSURE TENDENCY (3 HOUR)


1031.5

- .6

1030.9

3 hours ago

15

13,

8

101

CURRENT STATION PRESSURE = 1010.1

PRESSURE TREND = INCREASING

PRESSURE 3 HOURS AGO 1010.1 - 0.8

= 1009.3Property of Lear Siegler

15

13,

12

100

CURRENT STATION PRESSURE =

PRESSURE TREND =

PRESSURE 3 HOURS AGO

1010.0

DECREASING

1010.0 + 1.2= 1011.2



PRESSURE TREND =


1016.0

DECREASE THENSTEADY

1016.0 +2.4=1018.4

15

13,

24

160



PRESSURE TREND =


1014.2

STEADY

1014.2

15

13,

0

142



PRESSURE TREND =


1014.2

INCREASE THENDECREASE

1014.2

15

13,

0

142



PRESSURE TREND =


1014.2

DECREASE THENINCREASE

1014.2

15

13,

0

142


L

H

IND TRUE

H L

L H

ELO 2Action: The student will interpret data

contained in a weather depiction chart.

Condition: Given pertinent information about weather depiction charts.


WEATHER DEPICTION CHART


WEATHER DEPICTION CHART

PURPOSE - To portray areas of IFR, VFR and MVFR


FREQUENCY - Issued every 3 hours

CLEAR

FEW(1-2 octas)

SCATTERED(3-4 octas)

BROKEN(5-7 octas)

OVERCAST(8 octas)

OBSCURED

SKY COVERMISSING OR

PARTIALOBSCURATION

REF: AC 00-45F

BREAKS IN OVERCAST

Sky cover symbols shown on the weather depiction chart are the worst sky conditions (summation method) for that station.

The altitude below the station will show the

ceiling.

VISIBILITY

ONLY SHOWN WHEN 5 SM OR LESS

4 ‚

VISIBILITY

NO VISIBILITY SHOWN MEANS VISIBILITY IS GREATER THAN 5 SM


WEATHER AND OBSTRUCTIONS

4 ‚


CLOUD BASE

4 ‚


No altitude will be given if FEW or SCT.

If BKN or OVC, height is ceiling.

CLOUD BASE

4

5

‚


No altitude will be given if FEW or SCT.

If BKN or OVC, height is ceiling.

SCT010 BKN020 OVC030


W.D. S.A.

020

Using the summation

method

FEW010 FEW020 SCT030Property of Lear Siegler

W.D. S.A.

VFR

MVFR

IFR

CEILING AND VISIBILITY GREATER THAN 3000 -- 5

CEILING AND / OR VISIBILITY LESS THAN 1000 -- 3

AREAS DEPICTED

3000 -- 5To

1000 -- 3


SHADED AREAS … IFR WITH CIG LESS THAN1000 FT AND/OR VSBY LESS THAN 3 MI

CONTOURED WITHOUT SHADING…MVFR AREAS WITH CIG GREATER THAN OR EQUAL TO 1000 TO LESS THAN OR EQUAL TO 3000 FT AND/OR VSBY GREATER THAN OR EQUAL TO 3 TO LESS THAN OR EQUAL TO 5 MI

NO CONTOURS… VFR AREAS WITH CIG GREATER THAN 3000 FT AND VSBY GREATER THAN 5 MI



15

13 6

315

METAR KATL 151450Z 28025KT 4SM DZFG

SCT014 BKN120 OVC300 15/13

A3049 RMK SLP315

,120

4

W.D. S.A.

,


ELO 3Action: The student will interpret the

information contained on a radar summary chart.

Condition: Given pertinent information about radar summary charts.


RADAR SUMMARY

Radar Summary Chart

Gives a three-dimensional viewpoint of clouds and

precipitation

Issued every hour


CONTOURS ATLEVELS

1, 3, AND 5.

1

3

5

Light to Moderate

Heavy to Very Heavy

Intense to Extreme

450

TOPS OF ECHO


Maximum echo top does not

equal maximum cloud top

30

Area/Line Movement

CELL MOVEMENT


Symbol MeaningR RainRW Rain ShowerS SnowSW Snow ShowerT ThunderstormNE No Echoes


NA Not Available

OM Out for Maintenance


Line of Echoes – Solid (SLD)

WS999

WT999

HOOK

Severe Thunderstorm

Tornado Watch

Hook Echo

Severe weather watch area

FM 1-230 Referencesfor today

• Surface Analysis Chart 18-4

• Weather Depiction Chart 18-5

• Radar Summary 18-8

FM 1-230 Referencesfor tomorrow…

• TAF App B-11

• Winds Aloft Chart 18-10

That’s All Folks!

Documents

Property of Lear Siegler. T L O ELO 1 Action: The student will interpret the information contained in a surface analysis chart. Condition: Given pertinent