Overall Orange alert Tropical Cyclone for ISAIAS-20
in United States, Bahamas, Dominican Republic, Puerto Rico, Haiti, Virgin Islands U.S., Turks and Caicos Islands, Virgin Islands British, Cuba, Anguilla, Aruba, Netherlands Antilles, Saint Kitts and Nevis, Venezuela, Colombia, Montserrat, Antigua and Barbuda, Guadeloupe, Martinique, Saint Lucia, Saint Vincent and the Grenadines, Grenada, Barbados, Trinidad and Tobago, Dominica, Jamaica

Impact

Tropical Cyclone ISAIAS-20 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS (NOAA)
Exposed countries United States, Bahamas, Dominican Republic, Puerto Rico, Haiti, Virgin Islands U.S., Turks and Caicos Islands, Virgin Islands British, Cuba, Anguilla, Aruba, Netherlands Antilles, Saint Kitts and Nevis, Venezuela, Colombia, Montserrat, Antigua and Barbuda, Guadeloupe, Martinique, Saint Lucia, Saint Vincent and the Grenadines, Grenada, Barbados, Trinidad and Tobago, Dominica, Jamaica
Exposed population 920 thousand in Category 1 or higher
Maximum wind speed 139 km/h
Maximum storm surge 1.9 m (04 Aug 03:00 UTC)
Vulnerability Low (The Bahamas)

GDACS Score

GDACS alert score for Tropical Cyclones is 0.5 (GREEN Alert), 1.5 (ORANGE Alert), 2.5 (RED Alert)
For more info on GDACS alert score click here.
  Wind Storm surge Rainfall GDACS score
GDACS Current 139 km/h 1.9 m n.a. 0.5
GDACS Overall 139 km/h 1.9 m n.a. 1.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

Wind

139 km/h Current Max.

Up to 1.6 million people in Category 1 strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
Population in
Cat. 1 or higher
Countries
Orange 1 28 Jul 2020 15:00 93 51.3 million No people Barbados, Martinique, Saint Lucia, Saint Vincent and the Grenadines, Dominica, Guadeloupe, Antigua and Barbuda, Montserrat, Saint Kitts and Nevis, Anguilla, Virgin Islands U.S., Virgin Islands British, Puerto Rico, Dominican Republic, Haiti, Turks and Caicos Islands, Bahamas, Cuba, United States
Orange 2 28 Jul 2020 21:00 93 51.1 million No people Barbados, Martinique, Saint Lucia, Saint Vincent and the Grenadines, Dominica, Guadeloupe, Antigua and Barbuda, Montserrat, Saint Kitts and Nevis, Anguilla, Virgin Islands U.S., Virgin Islands British, Puerto Rico, Dominican Republic, Haiti, Turks and Caicos Islands, Bahamas, Cuba, United States
Orange 3 29 Jul 2020 03:00 93 56.5 million No people Barbados, Martinique, Saint Lucia, Dominica, Saint Vincent and the Grenadines, Guadeloupe, Grenada, Antigua and Barbuda, Montserrat, Saint Kitts and Nevis, Anguilla, Virgin Islands U.S., Virgin Islands British, Puerto Rico, Dominican Republic, Haiti, Turks and Caicos Islands, Bahamas, Cuba, United States, Jamaica
Orange 4 29 Jul 2020 09:00 93 57.2 million No people Dominica, Martinique, Guadeloupe, Saint Lucia, Montserrat, Antigua and Barbuda, Saint Vincent and the Grenadines, Saint Kitts and Nevis, Barbados, Grenada, Anguilla, Virgin Islands U.S., Trinidad and Tobago, Virgin Islands British, Puerto Rico, Dominican Republic, Haiti, Turks and Caicos Islands, Bahamas, Cuba, United States, Jamaica
Orange 5 29 Jul 2020 15:00 93 52.9 million No people Montserrat, Saint Kitts and Nevis, Guadeloupe, Virgin Islands U.S., Antigua and Barbuda, Dominica, Anguilla, Martinique, Virgin Islands British, Puerto Rico, Saint Lucia, Saint Vincent and the Grenadines, Grenada, Barbados, Dominican Republic, Trinidad and Tobago, Haiti, Turks and Caicos Islands, Bahamas, Cuba, United States
Orange 6 29 Jul 2020 21:00 83 54.8 million No people Virgin Islands U.S., Puerto Rico, Virgin Islands British, Saint Kitts and Nevis, Anguilla, Montserrat, Dominican Republic, Antigua and Barbuda, Guadeloupe, Martinique, Saint Lucia, Saint Vincent and the Grenadines, Grenada, Haiti, Barbados, Trinidad and Tobago, Turks and Caicos Islands, Bahamas, Cuba, United States
Orange 7 30 Jul 2020 03:00 83 57.5 million No people Puerto Rico, Dominican Republic, Virgin Islands U.S., Virgin Islands British, Netherlands Antilles, Saint Kitts and Nevis, Aruba, Anguilla, Venezuela, Montserrat, Guadeloupe, Antigua and Barbuda, Haiti, Martinique, Saint Lucia, Saint Vincent and the Grenadines, Grenada, Turks and Caicos Islands, Trinidad and Tobago, Barbados, Bahamas, Cuba, United States
Orange 8 30 Jul 2020 09:00 93 54.9 million No people Puerto Rico, Dominican Republic, Virgin Islands U.S., Virgin Islands British, Haiti, Anguilla, Saint Kitts and Nevis, Netherlands Antilles, Aruba, Turks and Caicos Islands, Venezuela, Montserrat, Antigua and Barbuda, Colombia, Guadeloupe, Bahamas, Cuba, Martinique, United States, Saint Lucia, Saint Vincent and the Grenadines, Grenada, Barbados, Trinidad and Tobago
Orange 9 30 Jul 2020 15:00 93 51.6 million No people Dominican Republic, Puerto Rico, Haiti, Virgin Islands U.S., Turks and Caicos Islands, Virgin Islands British, Bahamas, Cuba, Anguilla, Aruba, Netherlands Antilles, Saint Kitts and Nevis, Venezuela, United States, Colombia, Montserrat, Antigua and Barbuda, Guadeloupe, Martinique, Saint Lucia, Saint Vincent and the Grenadines, Grenada, Barbados, Trinidad and Tobago
Orange 10 30 Jul 2020 21:00 102 49 million 380 thousand Bahamas, United States
Orange 11 31 Jul 2020 03:00 102 56.4 million 220 thousand Bahamas, United States
Green 12 31 Jul 2020 04:00 139 56.4 million 440 thousand Bahamas, United States
Green 13 31 Jul 2020 09:00 157 58.4 million 330 thousand Bahamas, United States
Green 14 31 Jul 2020 15:00 148 87 million 780 thousand Bahamas, United States
Green 15 31 Jul 2020 21:00 139 107.3 million 2 million Bahamas, United States
Green 16 01 Aug 2020 03:00 139 104.5 million 1.7 million Bahamas, United States

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
GREEN
1 28 Jul 2020 15:00 Tropical storm 65 no people no people 13.8, -53.7
GREEN
2 28 Jul 2020 21:00 Tropical storm 65 1.4 million people no people 14.4, -55.9
GREEN
3 29 Jul 2020 03:00 Tropical storm 65 1.7 million people no people 14.6, -59.4
GREEN
4 29 Jul 2020 09:00 Tropical storm 74 5.4 million people no people 15.3, -61.3 Dominica
GREEN
5 29 Jul 2020 15:00 Tropical storm 74 6.3 million people no people 15.8, -63.7
ORANGE
6 29 Jul 2020 21:00 Tropical storm 74 13 million people no people 16.4, -65.6
ORANGE
7 30 Jul 2020 03:00 Tropical storm 83 23.6 million people no people 15.8, -67
ORANGE
8 30 Jul 2020 09:00 Tropical storm 93 25.9 million people no people 17.2, -67.9
ORANGE
9 30 Jul 2020 15:00 Tropical storm 93 25.1 million people no people 18.1, -68.9 Dominican Republic
ORANGE
10 30 Jul 2020 21:00 Tropical storm 93 23.5 million people no people 19.5, -70.6 Dominican Republic
ORANGE
11 31 Jul 2020 03:00 Tropical storm 93 24.7 million people no people 20.5, -71.9
GREEN
12 31 Jul 2020 04:00 Category 1 130 24.4 million people <1000 people 20.4, -72.2
GREEN
13 31 Jul 2020 09:00 Category 1 130 16.5 million people <1000 people 20.9, -73.3 Bahamas
GREEN
14 31 Jul 2020 15:00 Category 1 120 7.1 million people <1000 people 21.7, -74.5
GREEN
15 31 Jul 2020 21:00 Category 1 120 3.8 million people <1000 people 22.6, -75.7
GREEN
16 01 Aug 2020 03:00 Category 1 130 2.1 million people 4200 people 23.3, -76.4
GREEN
16 01 Aug 2020 12:00 Category 1 139 6.7 million people 8200 people 24.5, -77.8 Bahamas
GREEN
16 02 Aug 2020 00:00 Category 1 139 11.2 million people 720000 people 25.9, -79.1
GREEN
16 02 Aug 2020 12:00 Category 1 130 14.6 million people 1.3 million people 27.1, -80 United States
GREEN
16 03 Aug 2020 00:00 Category 1 120 9.6 million people 280000 people 28.5, -80.5 United States
GREEN
16 03 Aug 2020 12:00 Tropical storm 111 7.6 million people no people 30.2, -80.5
GREEN
16 04 Aug 2020 00:00 Tropical storm 111 48.1 million people no people 33.1, -78.9
GREEN
16 05 Aug 2020 00:00 Tropical storm 102 35.2 million people no people 41, -72.5 United States
GREEN
16 06 Aug 2020 00:00 Tropical storm 83 no people no people 47.5, -64
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.
Download:



Exposed population

Countries

Country
The Bahamas
United States

Provinces

Region Province Country Population
Bahamas Bahamas 270000 people
Florida United States 13.4 million people

Populated places

Name Region Province Country City class Population
Lake Worth Florida United States City 35000 people
Palm Beach Florida United States City 10000 people
West Palm Beach Florida United States City 82000 people
Riviera Beach Florida United States City 29000 people
Port Saint Lucie Florida United States City 88000 people
Fort Pierce Florida United States City 37000 people
Vero Beach Florida United States City 17000 people
Palm Bay Florida United States City 79000 people
Cocoa Florida United States City 16000 people
Merritt Island Florida United States City 36000 people
Titusville Florida United States City 40000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Duncan Town DCT 2 0
Congo Town COX 5 Civ. Paved No 5300
Mangrove Cay MAY unknown 0
Clarence A Bain 6 Civ. Paved No 5000
Andros Town ASD 2 Priv. Paved No 4000
San Andros SAQ 2 Civ. Paved No 4900
Great Inagua IGA 2 Civ. Paved No 7000
South Bimini 3 Civ. Paved No 5000
Bimini North SPB NSB unknown 0
The Murphy Company 5 0
West Palm Beach International PBI 6 Civ. Paved Yes 7900
Good Samaritan Medical Center 5 0
Freedom Wpec Inc 5 0
Palm Beach Gardens Medical Center 4 0
Florida Power & Light-juno Beach 19 0
Pga National 6 0
Nicholas Island 2 0
North Palm Beach County General Aviation 7 0
Atc 2 0
Br Ranch 6 0
Tailwinds 6 0
Sailfish Point 2 0
Tropical Plantation 6 0
Witham Field SUA 5 Civ. Paved Yes 5800
Martin Memorial Hospital 2 0
Naked Lady Ranch 7 0
Harbor Links Yacht & Country Club 5 0
Kitching Cove unknown 0
Fp & L Nuclear Power Plant 5 0
Lawnwood Medical Center 5 0
Williams Hawgwild 6 0
St Lucie County International FPR 8 Civ. Paved Yes 6400
Triple M 6 0
Strazzulla Groves 8 0
Fly In Ranches 8 0
Vero Beach Municipal VRB 8 Civ. Paved Yes 7300
Indian River Aerodrome 8 0
New Hibiscus Airpark 8 0
Broocke Air Patch 7 0
Sebastian Municipal 7 0
Parrish Brothers Private 7 0
Fulton unknown 0
Valkaria 8 0
Porta Target 9 0
Ringhaver 9 0
Holmes Regional Medical Center 12 0
Melbourne International MLB 11 Civ. Paved Yes 9400
Patrick AFB COF 3 Mil. Paved Yes 9000
Nierenberg Estate 10 0
Knobel 12 0
Va Outpatient Clinic 9 0
Cape Canaveral Hospital 2 0
Rockledge 8 0
Merritt Island COI 2 Civ. Paved Yes 3600
Wuesthoff Hospital Emergency 30 0
Cape Canaveral Air Force Station XMR 3 Mil. Paved No 10000
Space Center Executive TIX 11 Civ. Paved Yes 6000
Nasa Shuttle Landing Facility X68 3 0
Arthur Dunn Airpark 9 0
Tradewinds Aerodrome 2 0
Highlander 5 0

Ports

Name LOCODE Country
Ragged Island The Bahamas
Andros Town BSASD The Bahamas
Nicholls Town The Bahamas
Man Of War Bay The Bahamas
Matthew Town The Bahamas
Bimini Island The Bahamas
Palm Beach USPAB Wake Island
Fort Pierce USFPR Wake Island
Port Canaveral USPCA Wake Island
Canaveral Harbor Wake Island

Nuclear plants

Name Country Reactors
ST. LUCIE UNITED STATES 2

Rainfall

Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

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StormSurge

1.9 m

The maximum Storm surge height is  1.9m in Deepwater, United States. This height is estimated for 04 Aug 2020 18:00 UTC .

The JRC has developed an experimental global storm surge model. The calculations are published about 20 minutes after a new advisory is detected by GDACS. The calculations identify the populated places affected by storm surge up to three days in advance, using the forecasted track. When forecasts change, the associated storm surge changes too and alert levels may go up or down. All links, data, statistics and maps refer to the latest available calculation. If the calculation for the last advisory is not completed, the latest available calculation is shown.

Locations affected by Storm surge (2795 locations). Calculation based on advisory number 33 of 05 Aug 2020 09:00:00 UTC. (Simulation using 0.5 minute resolution)

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