Overall Green alert Tropical Cyclone for BERYL-18
in Guadeloupe, Dominica, Martinique


Tropical Cyclone BERYL-18 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS (NOAA)
Exposed countries Guadeloupe, Dominica, Martinique
Exposed population No people in Category 1 or higher
Maximum wind speed 157 km/h
Maximum storm surge 0.5 m (09 Jul 02:00 UTC)
Vulnerability Low (Guadeloupe)


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 148 km/h 0.5 m n.a. 0.5
GDACS Overall 157 km/h 0.5 m n.a. 0.5

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


148 km/h Current

Up to 380000 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
Green 1 05 Jul 2018 15:00 65 No people No people
Green 2 05 Jul 2018 21:00 120 No people No people
Green 3 06 Jul 2018 03:00 120 No people No people
Green 4 06 Jul 2018 09:00 139 590 thousand No people Martinique, Dominica, Guadeloupe
Green 5 06 Jul 2018 15:00 157 10.7 million 70 thousand Dominica
Green 6 06 Jul 2018 21:00 148 5.8 million 390 thousand Martinique

Bulletin Timeline

No content available ..

Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.

Exposed population




No content available ..

Populated places

Name Region Province Country City class Population
Fort-de-France Martinique Capital 88000 people

Critical infrastructure

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


Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Le Lamentin FDF 5 Civ. Paved Yes 10800


Name LOCODE Country
Le Marin Martinique
Le Robert Martinique
La Trinite Martinique
Fort de France MQFDF Martinique
Saint Pierre Martinique


Reservoir Dam Name River Year
Saint Pierre la Manzo Manche 1978


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.



0.5 m

The maximum Storm surge height is  0.1m in Baroui, Dominica. This height is estimated for 09 Jul 2018 01:00 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. 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 (10 locations). Calculation based on advisory number 14 of 08 Jul 2018 21:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
09 Jul 2018 01:00 Baroui Dominica  0.1
09 Jul 2018 00:00 Marigot Dominica  0.1
09 Jul 2018 02:00 Basse-Terre Guadeloupe  0.1
09 Jul 2018 00:00 Grand-Bourg Guadeloupe  0.1
09 Jul 2018 00:00 Castle Bruce Dominica  0.1
09 Jul 2018 00:00 La Plaine Dominica  0.1
09 Jul 2018 00:00 Capesterre Guadeloupe  0.1
09 Jul 2018 01:00 Portsmouth Dominica  0.1
09 Jul 2018 02:00 Saint-Claude Guadeloupe  0.1
09 Jul 2018 01:00 Le Bourg Guadeloupe  0.1