Overall Green alert Tropical Cyclone for ISAAC-18
in Montserrat, Guadeloupe, Antigua and Barbuda, Dominica, Martinique, Saint Vincent and the Grenadines, Saint Lucia, Barbados

Impact

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

Meteorological source GDACS
Exposed countries Montserrat, Guadeloupe, Antigua and Barbuda, Dominica, Martinique, Saint Vincent and the Grenadines, Saint Lucia, Barbados
Exposed population No people in Category 1 or higher
Maximum wind speed 157 km/h
Maximum storm surge
Vulnerability High (Montserrat)

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
Current 139 km/h 0.0 m n.a. 0.5
Overall 157 km/h 0.0 m n.a. 0.5

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

Wind

139 km/h Current Max.

Up to 120000 people in Category 1 strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm or higher
Population in
Cat 1. or higher
Countries
Green 1 07 Sep 2018 21:00 139 No people No people
Green 2 08 Sep 2018 03:00 157 No people No people
Green 3 08 Sep 2018 09:00 148 No people No people
Green 4 08 Sep 2018 15:00 148 520 thousand No people Barbados, Martinique, Saint Lucia
Green 5 08 Sep 2018 21:00 139 600 thousand 120 thousand Martinique

Bulletin Timeline

Alert Date (UTC) Category
(SSHS)
Max winds
(km/h)
Population in
Cat.1 or higher
Population in
Tropical Storm
or higher
Location (lat, lon) Countries
GREEN
1 07 Sep 2018 21:00 Tropical depression 56 no people no people 13.6, -34.9
GREEN
2 08 Sep 2018 03:00 Tropical depression 56 no people no people 13.9, -34.9
GREEN
3 08 Sep 2018 09:00 Tropical depression 56 no people no people 14.3, -35.4
GREEN
4 08 Sep 2018 15:00 Tropical depression 56 no people no people 14.6, -36
GREEN
5 08 Sep 2018 21:00 Tropical storm 65 no people no people 14.5, -36.6
GREEN
5 09 Sep 2018 06:00 Tropical storm 74 no people no people 14.6, -37.7
GREEN
5 09 Sep 2018 18:00 Tropical storm 93 no people no people 14.7, -39.5
GREEN
5 10 Sep 2018 06:00 Tropical storm 111 no people no people 14.7, -42
GREEN
5 10 Sep 2018 18:00 Category 1 120 no people no people 14.7, -44.6
GREEN
5 11 Sep 2018 18:00 Category 1 139 no people no people 14.5, -50
GREEN
5 12 Sep 2018 18:00 Category 1 139 120000 people 600000 people 14.5, -55.5 Martinique
GREEN
5 13 Sep 2018 18:00 Category 1 130 no people no people 15, -61 Saint Lucia
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.
Download:



Exposed population - AoIs

Exposed population in the potential affected countries, provinces and populated places

Countries

Country
Martinique

Provinces

Region Province Country
Martinique Martinique

Critical infrastructure

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

Ports

Name LOCODE Country
Le Robert Martinique
La Trinite Martinique
Saint Pierre Martinique

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.

...

StormSurge

0 m

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 (0 locations). Calculation based on advisory number 5 of 08 Sep 2018 21:00:00 UTC. (Simulation using 6 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)