CDMP Storm Hazard Atlas: Barbados

1
Barbados Probable Storm Effects
The projection of the illustrations is Plate
Carrée, a square grid of latitude and longitude.
Resolution is 30 arc-seconds. North-South
distances are true to scale. East-West distances
are stretched 2.6 at 12.85 degrees North, and
stretched 2.9 at 13.5 degrees North. All model
results were calculated using great-circle
distances based on the WGS84 datum.
Points of Interest
1. Bathsheba Beach on exposed eastern coast.
Speightstown
3
Bathsheba
2. Bridgetown Main town with harbour.
1
3. Speightstown Town on coastal road.
Barbados
Note Waves and surges for Points of Interest
are reported from the nearest cell offshore.
Bridgetown
2
N

• 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.

2
Winds
10-Year Return Time
Barbados
1. Bathsheba 26 m/s
3
2. Bridgetown 26 m/s
1
3. Speightstown 27 m/s
2
N
3
Waves
10-Year Return Time
Barbados
1. Bathsheba 3.3 m
3
2. Bridgetown 3.3 m
1
3. Speightstown 3.3 m
2
N
4
Surges
10-Year Return Time
Barbados
1. Bathsheba 0.2 m
3
2. Bridgetown 0.1 m
1
3. Speightstown 0.2 m
2
N
5
Winds
25-Year Return Time
Barbados
1. Bathsheba 34 m/s
3
2. Bridgetown 34 m/s
1
3. Speightstown 35 m/s
2
N
6
Waves
25-Year Return Time
Barbados
1. Bathsheba 4.3 m
3
2. Bridgetown 4.2 m
1
3. Speightstown 4.4 m
2
N
7
Surges
25-Year Return Time
Barbados
1. Bathsheba 0.3 m
3
2. Bridgetown 0.3 m
1
3. Speightstown 0.3 m
2
N
8
Winds
50-Year Return Time
Barbados
1. Bathsheba 39 m/s
3
2. Bridgetown 39 m/s
1
3. Speightstown 40 m/s
2
N
9
Waves
50-Year Return Time
Barbados
1. Bathsheba 4.9 m
3
2. Bridgetown 4.9 m
1
3. Speightstown 5.0 m
2
N
10
Surges
50-Year Return Time
Barbados
1. Bathsheba 0.5 m
3
2. Bridgetown 0.4 m
1
3. Speightstown 0.4 m
2
N
11
Winds
100-Year Return Time
Barbados
1. Bathsheba 45 m/s
3
2. Bridgetown 45 m/s
1
3. Speightstown 46 m/s
2
N
12
Waves
100-Year Return Time
Barbados
1. Bathsheba 5.7 m
3
2. Bridgetown 5.6 m
1
3. Speightstown 5.7 m
2
N
13
Surges
100-Year Return Time
Barbados
1. Bathsheba 0.7 m
3
2. Bridgetown 0.6 m
1
3. Speightstown 0.6 m
2
N