Overall Red alert Tropical Cyclone for WILLA-18
in Mexico


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

Meteorological source GDACS (NOAA)
Glide number: TC-2018-000168-MEX
Exposed countries Mexico
Exposed population 190 thousand in Category 1 or higher
Maximum wind speed 250 km/h
Maximum storm surge
Vulnerability Medium (Mexico)


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 185 km/h 0.0 m n.a. 0.5
GDACS Overall 250 km/h 0.0 m n.a. 0.5

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


185 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 20 Oct 2018 09:00 185 Few people No people Mexico

Bulletin Timeline

Alert Date (UTC) Category Max winds
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
1 20 Oct 2018 09:00 Tropical depression 56 no people no people 15.1, -104.9
1 20 Oct 2018 18:00 Tropical storm 74 no people no people 15.5, -105.7
1 21 Oct 2018 06:00 Tropical storm 93 no people no people 15.9, -106.6
1 21 Oct 2018 18:00 Tropical storm 111 no people no people 16.5, -107.4
1 22 Oct 2018 06:00 Category 1 139 no people no people 17.1, -108
1 23 Oct 2018 06:00 Category 2 167 <1000 people no people 18, -109 Mexico
1 24 Oct 2018 06:00 Category 3 185 <1000 people no people 19.2, -109.4 Mexico
1 25 Oct 2018 06:00 Category 2 176 no people no people 21.7, -108.5
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 m

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 (0 locations). Calculation based on advisory number 1 of 20 Oct 2018 09:00:00 UTC. (Simulation using 6 minute resolution)

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