Antigua 17 325 N Probable Storm Effects Points
Antigua 17. 325 N Probable Storm Effects Points of Interest: 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 stretched 4. 5% at 16. 825 degrees North, and stretched 4. 7% at 17. 325 degrees North. All model results were calculated using great-circle distances based on the WGS 84 datum. 1. St. John’s: Main town, with the harbour at the end of a deep inlet. 2. Parham: Harbour at the end of a broad, shallow inlet. 15 30 62. 025 W Parham Ross Wagenseil for CDMP Antigua January 2000 3 20 MILES KILOMETERS ARC-MINUTES Note: Waves and surges for Points of Interest are reported from the nearest cell offshore. 2 61. 525 W 3. English Harbour: Shown as a three-sided cove. St. John’s 1 English Harbour N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 10 Wave Surge 5 0 10 0 0 16. 825 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. 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.
17. 325 N Winds 10 -Year Return Time Antigua 1. St. John’s: 32 m/s 1 3. English Harbour: 33 m/s Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 32 m/s N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Wave Surge 5 knots mph 25 0 0 m/s 1 75 30 Min 100 100 20 2 75 50 50 10 Wind Speeds 50 25 kph 0 0 Storm Category 10 CDMP 16. 825 N 10 Max 4 150 200 50 5 125 150 40 3 250 60 70
17. 325 N Waves 10 -Year Return Time Antigua 1. St. John’s: 1. 3 m 1 3. English Harbour: 4. 1 m Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 1. 7 m N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Wave Heights Wave Surge CDMP 16. 825 N 10 5 10 Meters 1 2 5 Feet 0 0 0 Min 3 10 4 5 15 Max 6 20 7 25
17. 325 N Surges 10 -Year Return Time Antigua 1. St. John’s: 0. 5 m 1 3. English Harbour: 0. 3 m Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 1. 1 m N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Surge Heights Wave Surge CDMP 16. 825 N 10 5 10 Meters 1 0 0 0 5 Feet Min 2 Max 3 10 4 5 15 6 20
17. 325 N Winds 25 -Year Return Time Antigua 1. St. John’s: 40 m/s 1 3. English Harbour: 43 m/s Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 40 m/s N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Wave Surge 5 knots mph 25 0 0 m/s 1 75 100 20 2 75 50 50 10 Wind Speeds 50 25 kph 0 0 Storm Category 10 CDMP 16. 825 N 10 100 Min 40 4 150 200 50 Max 5 125 150 30 3 250 60 70
17. 325 N Waves 25 -Year Return Time Antigua 1. St. John’s: 1. 7 m 1 3. English Harbour: 5. 4 m Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 2. 2 m N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Wave Heights Wave Surge CDMP 16. 825 N 10 5 10 Meters 1 Feet 0 0 0 2 5 Min 3 10 4 6 5 20 15 Max 7 25
17. 325 N Surges 25 -Year Return Time Antigua 1. St. John’s: 1. 0 m 1 3. English Harbour: 0. 5 m Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 1. 7 m N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Surge Heights Wave Surge CDMP 16. 825 N 10 5 10 Meters 1 0 0 0 Feet Min 2 5 Max 3 10 4 5 15 6 20
17. 325 N Winds 50 -Year Return Time Antigua 1. St. John’s: 47 m/s 1 3. English Harbour: 49 ms Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 47 m/s N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Wave Surge 5 knots mph 25 0 0 m/s 1 75 100 100 20 2 75 50 50 10 Wind Speeds 50 25 kph 0 0 Storm Category 10 CDMP 16. 825 N 10 40 Min 4 5 125 150 30 3 200 250 60 50 Max 70
17. 325 N Waves 50 -Year Return Time Antigua 1. St. John’s: 2. 0 m 1 3. English Harbour: 6. 1 m Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 2. 6 m N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Wave Heights Wave Surge CDMP 16. 825 N 10 5 10 Meters 1 Feet 0 0 0 2 5 3 10 Min 4 5 15 6 7 25 20 Max
17. 325 N Surges 50 -Year Return Time Antigua 1. St. John’s: 1. 3 m 1 3. English Harbour: 0. 7 m Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 2. 1 m N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Surge Heights Wave Surge CDMP 16. 825 N 10 5 10 Meters 1 0 0 0 Feet Min 2 3 10 5 Max 4 5 15 6 20
17. 325 N Winds 100 -Year Return Time Antigua 1. St. John’s: 52 m/s 1 3. English Harbour: 54 m/s Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 52 m/s N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Wave Surge 5 knots mph 25 0 0 m/s 1 75 100 20 2 75 50 50 10 Wind Speeds 50 25 kph 0 0 Storm Category 10 CDMP 16. 825 N 10 30 100 Min 4 150 200 50 5 125 150 40 3 250 60 70 Max
17. 325 N Waves 100 -Year Return Time Antigua 1. St. John’s: 2. 3 m 1 3. English Harbour: 6. 7 m Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 2. 9 m N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Wave Heights Wave Surge CDMP 16. 825 N 10 5 10 Meters 1 Feet 0 0 0 2 5 3 10 Min 4 5 15 6 7 25 20 Max
17. 325 N Surges 100 -Year Return Time Antigua 1. St. John’s: 1. 5 m 1 3. English Harbour: 0. 9 m Ross Wagenseil for CDMP January 2000 3 20 MILES KILOMETERS ARC-MINUTES 15 30 2 61. 525 W 62. 025 W 2. Parham: 2. 6 m N 20 CT LE 10 yr SE Wind 10 25 yr 50 yr 100 yr Surge Heights Wave Surge CDMP 16. 825 N 10 5 10 Meters 1 0 0 0 Feet Min 2 3 10 5 Max 4 5 15 6 20
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