Slide 1

Wind Wave Surge 10yr25yr50yr100yr SELECT Barbuda Topography 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 0 > 50 m < - 50 m sea level 38 m max on Barbuda Grid: UTM Zone 20 Projection: Transverse Mercator Spheroid: Clarke 1866 Unit of Measurement: Meter Meridian of Origin: 63 West of Greenwich Latitude of Origin : Equator Scale Factor at Origin: 0.9996 False Co-ords of Origin: 500,000 m Easting, Nil Northing Datum: North American 1927 Molodensky dx/dy/dz: -11 175 188 Resolution: 6 arc-seconds. (~ 182.5 m) The model used great-circle distances on the WGS84 datum. N Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W Scale varies with output device: Letter paper, 8 X 11 ~ 1/172,000 15 monitor ~ 1/160,000 17 monitor ~ 1/141,000 19 monitor ~ 1/126,000 APPROXIMATELY 2 1. Codrington: Main town, on a lagoon, with airstrip on the south 2. Palmetto Point: Sandy peninsula with hotel, subject to erosion. Points of Interest: 3. Martello Tower: Dock for sand quarry, currently serving as the main harbour for the island. 3 1 4 4. Cocoa Point: Resort with private airstrip. Offshore are numerous reefs. Notes: 1. Roads are shown for visual reference only. 2. Waves and surges for Points of Interest are reported from the nearest cell offshore. DirectoryTopo. Map Slide 2 Wind Speeds 012345 knots mph kph m/s Storm Category 255075100125 255075100 125 150 50100150200250 10 20 304050 60 70 Min Max Wind Wave Surge 10yr25yr50yr100yr SELECT Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington 29 m/s 2. Palmetto Point 31 m/s 3. Martello Tower 31 m/s 4. Cocoa Point 31 m/s Winds Barbuda Probability 10% / year, 10-Year Return Time DirectoryTopo. Map Slide 3 Probability 10% / year, 10-Year Return Time Wave Heights Meters Feet 1 2 3 4 5 6 7 510 15 20 25 Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington North side Dock 1.2 m South side 2. Palmetto Point Inland Shore 2.8 m 3. Martello Tower Inland Shore 1.6 m 4. Cocoa Point Shore E of airstrip 1.6 m West of point 2.4 m Anchorage SW of airstrip 1.7 m Waves Barbuda DirectoryTopo. Map Slide 4 Probability 10% / year, 10-Year Return Time Surge Heights 1234 5 6 5 10 15 20 Meters Feet Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington North side Dock 0.7 m South side 2. Palmetto Point Inland Shore 0.3 m 3. Martello Tower Inland Shore 0.4 m 4. Cocoa Point Shore E of airstrip 0.4 m West of point 0.3 m Anchorage SW of airstrip 0.3 m Note: surges are reported as elevation above sea level, not depth of water. Barbuda Surges DirectoryTopo. Map Slide 5 Probability 4% / year, 25-Year Return Time Wind Speeds 012345 knots mph kph m/s Storm Category 255075100125 255075100 125 150 50100150200250 10 20 304050 60 70 Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington 37 m/s 2. Palmetto Point 40 m/s 3. Martello Tower 40 m/s 4. Cocoa Point 40 m/s Winds Barbuda DirectoryTopo. Map Slide 6 Wave Heights Meters Feet 1 2 3 4 5 6 7 510 15 20 25 Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington North side Dock 1.3 m South side 2. Palmetto Point Inland Shore 2.9 m 3. Martello Tower Inland 0.3 m Shore 1.8 m 4. Cocoa Point Shore E of airstrip 0.7 m West of point 0.5 m Anchorage SW of airstrip 0.5 m Waves Barbuda Probability 4% / year, 25-Year Return Time DirectoryTopo. Map Slide 7 Probability 4% / year, 25-Year Return Time Surge Heights 1234 5 6 5 10 15 20 Meters Feet Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington North side 1.1 m Dock 1.0 m South side 1.4 m 2. Palmetto Point Inland Shore 0.6 m 3. Martello Tower Inland 1.7 m Shore 0.7 m 4. Cocoa Point Shore E of airstrip 0.7 m West of point 0.5 m Anchorage SW of airstrip 0.5 m Note: surges are reported as elevation above sea level, not depth of water. Surges Barbuda DirectoryTopo. Map Slide 8 Probability 2% / year, 50-Year Return Time Wind Speeds 012345 knots mph kph m/s Storm Category 255075100125 255075100 125 150 50100150200250 10 20 304050 60 70 Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington 43 m/s 2. Palmetto Point 47 m/s 3. Martello Tower 46 m/s 4. Cocoa Point 46 m/s Winds Barbuda DirectoryTopo. Map Slide 9 Probability 2% / year, 50-Year Return Time Wave Heights Meters Feet 1 2 3 4 5 6 7 510 15 20 25 Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington North side 0.3 m Dock 1.4 m South side 0.2 m 2. Palmetto Point Inland Shore 3.1 m 3. Martello Tower Inland 0.4 m Shore 1.9 m 4. Cocoa Point Shore E of airstrip 1.8 m West of point 2.6 m Anchorage SW of airstrip 2.0 m Waves Barbuda DirectoryTopo. Map Slide 10 Probability 2% / year, 50-Year Return Time Surge Heights 1234 5 6 5 10 15 20 Meters Feet Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington North side 1.2 m Dock 1.2 m South side 1.6 m 2. Palmetto Point Inland Shore 0.8 m 3. Martello Tower Inland 2.2 m Shore 1.0 m 4. Cocoa Point Shore E of airstrip 0.8 m West of point 0.6 m Anchorage SW of airstrip 0.7 m Note: surges are reported as elevation above sea level, not depth of water. Surges Barbuda DirectoryTopo. Map Slide 11 Probability 1% / year, 100-Year Return Time Wind Speeds 012345 knots mph kph m/s Storm Category 255075100125 255075100 125 150 50100150200250 10 20 304050 60 70 Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington 49 m/s 2. Palmetto Point 53 m/s 3. Martello Tower 52 m/s 4. Cocoa Point 53 m/s Winds Barbuda DirectoryTopo. Map Slide 12 Waves Barbuda Probability 1% / year, 100-Year Return Time Wave Heights Meters Feet 1 2 3 4 5 6 7 510 15 20 25 Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 2 1 3 4 1. Codrington North side 0.4 m Dock 1.6 m South side 0.6 m 2. Palmetto Point Inland 0.1 m Shore 3.2 m 3. Martello Tower Inland 0.4 m Shore 2.1 m 4. Cocoa Point Lagoon E of airstrip 0.7 m West of point 2.7 m Anchorage SW of airstrip 2.1 m DirectoryTopo. Map Slide 13 Probability 1% / year, 100-Year Return Time Surges Barbuda Surge Heights 1234 5 6 5 10 15 20 Meters Feet Wind Wave Surge 10yr25yr50yr100yr SELECT Min Max Ross Wagenseil for PGDM April 2001 PGDM May 2001 17.533 N 61.9 W 17.75 N 61.72 W 5 ARC-MINUTES 0 5 KILOMETERS 0 10 MILES 0 5 N 1 2 3 4 1. Codrington North side 1.5 m Dock 1.7 m South side 1.9 m 2. Palmetto Point Inland 1.0 m Shore 1.0 m 3. Martello Tower Inland 2.6 m Shore 1.3 m 4. Cocoa Point Lagoon E of airstrip 1.7 m West of point 0.8 m Anchorage SW of airstrip 0.9 m Note: surges are reported as elevation above sea level, not depth of water. DirectoryTopo. Map