Anguilla Vicinity 18 4 N Probable Storm Effects

Anguilla & Vicinity 18. 4 N Probable Storm Effects Anguilla Island Harbour 1 Points of Interest: Anguilla 63. 4 W 2 2. Little Harbour is near a gap in the fringing reefs on the south shore. 3. Phillipsburg: Main town and harbour. 30 20 Wave 20 10 Surge 5 10 0 0 St. Bart. 17. 8 N CDMP This set of maps is part of Section 2 of the Atlas of Probable Storm Effects in the Caribbean Sea , which was sponsored by the Caribbean Disaster Mitigation Project (CDMP), a joint effort of the Organization of American States (OAS) and the US Agency for International Development (USAID). These maps are a result of new techniques for modeling storms and estimating the probabilities of storms, developed in part under the patronage of CDMP. Refer to the Atlas for explanatory materials. 100 yr 10 MILES KILOMETERS ARC-MINUTES SE Wind 50 yr Ross Wagenseil for CDMP 3 March 2000 Phillipsburg N 15 25 yr St. Martin St. Maartin Note: Waves and surges for Points of Interest are reported from the nearest cell offshore. CT LE 10 yr Little Harbour 62. 6 W 1. Island Harbour is protected by a complicated system of reefs to the north. The projection of the illustrations is Plate Carrée, a square grid of latitude and longitude. Resolution is 30 arcseconds. North-South distances are true to scale. East-West distances are Ross Wagenseil stretched 5. 1% at 17. 8 degrees North, for CDMP and stretched 5. 4% at 18. 4 degrees North. All. January model results were calculated 2000 using great-circle distances based on the WGS 84 datum. 0 • WINDS represent sustained 1 -minute winds at 10 m above the surface, and include both surface friction and topographic effects at a resolution of 30 arc-seconds. Friction factors derive from a Level I land-cover classification, with water, forest and open land predominating. If using wind damage models or building codes which internally include surface friction or topographic corrections, the nearest open-water wind speed from one of these maps may be used as input. Careful judgement is advised in reading and applying the values. • SURGES include astronomical tide and setups from pressure, wind and wave, but not wave runup. Surges over land are shown as elevation above sea level, not water depth. • WAVES are the heights of wave crests above the storm surge level in open water. Shoreline effects do not appear at this resolution.

18. 4 N Winds 10 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 32 m/s 63. 4 W 62. 6 W 2. Little Harbour: 31 m/s Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 31 m/s 30 20 MILES KILOMETERS ARC-MINUTES N CDMP 17. 8 N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr 10 10 Surge 5 0 Storm Category 20 knots mph 25 m/s 75 20 0 0 100 100 40 Max 3 4 150 200 50 5 125 150 30 Min 0 2 75 50 50 10 1 50 25 kph 10 Wind Speeds 250 60 70

18. 4 N Waves 10 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 3. 9 m high, immediately to the north 63. 4 W 62. 6 W 2. Little Harbour: 3. 4 to 3. 9 m high, immediately to the south and east Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 3. 9 m 30 20 MILES KILOMETERS ARC-MINUTES N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr Wave Heights 100 yr 10 20 10 Surge 5 Meters 1 Feet 10 2 5 0 0 3 4 10 Min 0 CDMP 17. 8 N 5 15 Max 6 20 7 25

18. 4 N Surges 10 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 0. 3 m high, immediately offshore to the north 63. 4 W 62. 6 W 2. Little Harbour: 0. 3 m high, offshore to the south and east Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 0. 2 m 30 20 MILES KILOMETERS ARC-MINUTES N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr Surge Heights 100 yr 10 20 10 Surge 5 Meters 1 Feet 10 Min 0 CDMP 17. 8 N 0 0 Max 2 5 3 10 4 5 15 6 20

18. 4 N Winds 25 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 41 m/s 63. 4 W 62. 6 W 2. Little Harbour: 40 m/s Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 40 m/s 30 20 MILES KILOMETERS ARC-MINUTES N CDMP 17. 8 N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr 10 10 Surge 5 0 Storm Category 20 knots mph 25 m/s 75 100 20 0 0 100 30 40 3 4 150 200 50 Max 5 125 150 Min 0 2 75 50 50 10 1 50 25 kph 10 Wind Speeds 250 60 70

18. 4 N Waves 25 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 5. 1 m high, immediately offshore to the north 63. 4 W 62. 6 W 2. Little Harbour: 3. 6 m to the south, 3. 7 m to the east, and 5. 0 m immediately offshore to the southeast. Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 4. 9 m 30 20 MILES KILOMETERS ARC-MINUTES N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr Wave Heights 100 yr 10 20 10 Surge 5 Meters 1 Feet 10 3 2 5 10 Min 0 CDMP 17. 8 N 0 0 4 6 5 20 15 Max 7 25

18. 4 N Surges 25 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 0. 6 m immediately offshore to the north 63. 4 W 62. 6 W 2. Little Harbour: 0. 6 m to 0. 7 m immediately offshore Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 0. 5 m 30 20 MILES KILOMETERS ARC-MINUTES N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr Surge Heights 100 yr 10 20 10 Surge 5 Meters 1 0 0 2 5 Feet 10 Min 0 CDMP 17. 8 N Max 3 10 4 5 15 6 20

18. 4 N Winds 50 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 47 m/s 63. 4 W 62. 6 W 2. Little Harbour: 47 m/s Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 46 m/s 30 20 MILES KILOMETERS ARC-MINUTES N CDMP 17. 8 N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr 10 10 Surge 5 0 Storm Category 20 knots mph 25 m/s 75 30 40 0 0 3 4 150 200 250 60 50 Max 5 125 150 Min 0 100 100 20 2 75 50 50 10 1 50 25 kph 10 Wind Speeds 70

18. 4 N Waves 50 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 5. 9 m high offshore 63. 4 W 62. 6 W 2. Little Harbour: 3. 8 m high near shore, 5. 4 m high a little farther out Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 5. 1 m 30 20 MILES KILOMETERS ARC-MINUTES N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr Wave Heights 100 yr 10 20 10 Surge 5 Meters 1 Feet 10 3 2 5 10 Min 0 CDMP 17. 8 N 0 0 4 5 15 6 7 20 Max 25

18. 4 N Surges 50 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 0. 9 m high immediately offshore 63. 4 W 62. 6 W 2. Little Harbour: 0. 9 m high, immediately offshore Ross Wagenseil for CDMP 3 March 2000 K 3. Phillipsburg: 0. 8 m 30 20 MILES KILOMETERS ARC-MINUTES N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr Surge Heights 100 yr 10 20 10 Surge 5 Meters 1 0 2 5 Feet 10 Min 0 CDMP 17. 8 N 0 Max 3 10 4 5 15 6 20

18. 4 N Winds 100 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 53 m/s 63. 4 W 62. 6 W 2. Little Harbour: 53 m/s Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 53 m/s 30 20 MILES KILOMETERS ARC-MINUTES N CDMP 17. 8 N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr 10 10 Surge 5 0 Storm Category 20 knots mph 25 m/s 75 100 20 2 75 50 50 10 1 50 25 kph 10 Wind Speeds 30 100 0 0 4 150 200 40 50 5 125 150 Min 0 100 3 250 60 70 Max

18. 4 N Waves 100 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 6. 8 m high offshore 63. 4 W 62. 6 W 2. Little Harbour: 4. 1 m at the shore, 5. 6 m high a little farther out Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 5. 3 m 30 20 MILES KILOMETERS ARC-MINUTES N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr Wave Heights 100 yr 10 20 10 Surge 5 Meters 1 Feet 10 2 5 3 10 Min 0 CDMP 17. 8 N 0 0 4 5 15 6 7 25 20 Max

18. 4 N Surges 100 -Year Return Time Anguilla & vicinity 1 2 1. Island Harbour: 1. 2 m high at the shore 63. 4 W 62. 6 W 2. Little Harbour: 1. 3 m high at the shore Ross Wagenseil for CDMP 3 March 2000 3. Phillipsburg: 1. 0 m 30 20 MILES KILOMETERS ARC-MINUTES N 15 CT LE 10 yr SE Wind Wave 25 yr 50 yr Surge Heights 100 yr 10 20 10 Surge 5 Meters 1 0 0 2 5 Feet 10 Min 0 CDMP 17. 8 N Max 3 10 4 5 15 6 20