Overall Green alert Tropical Cyclone for HILWA-12
in Mauritius


Tropical Cyclone HILWA-12 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS (JRC)
Exposed countries Mauritius
Exposed population No people in Category 1 or higher
Maximum wind speed 175 km/h
Maximum storm surge 0.1 m (21 Feb 09:00 UTC)
Vulnerability Medium (Mauritius)


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 175 km/h 0.0 m n.a. 0.5
GDACS Overall 175 km/h 0.1 m n.a. 0.5

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


175 km/h Current

Up to no 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 14 Feb 2012 06:00 175 No people No people

Bulletin Timeline

Alert Date (UTC) Category Max winds
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
1 2/14/2012 6:00:00 AM Tropical storm 74 no people no people -13.6, 90.7
1 2/14/2012 6:00:00 PM Tropical storm 84 no people no people -14.2, 87.7
1 2/15/2012 6:00:00 AM Tropical storm 101 no people no people -14.8, 84.6
1 2/15/2012 6:00:00 PM Tropical storm 111 no people no people -15.4, 81.7
1 2/16/2012 6:00:00 AM Category 1 130 no people no people -15.9, 79.2
1 2/17/2012 6:00:00 AM Category 2 158 no people no people -16.5, 74.8
1 2/18/2012 6:00:00 AM Category 2 175 no people no people -16.5, 70.1
1 2/19/2012 6:00:00 AM Category 2 175 no people no people -16.6, 66.9
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.

Exposed population

Critical infrastructure

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


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.



0.1 m

The maximum Storm surge height is  0.1m in Port Mathurin, Mauritius. This height is estimated for 21 Feb 2012 09:00 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 (2 locations). Calculation based on advisory number 17 of 21 Feb 2012 18:00:00 UTC. (Simulation using 2 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
21 Feb 2012 09:00 Port Mathurin Mauritius  0.1
21 Feb 2012 09:00 La Ferme Mauritius  0.1