GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Orange alert Tropical Cyclone for KATIA-17
in Mexicofrom 05 Sep 2017 21:00 UTC to 09 Sep 2017 15:00 UTC
Storm surge for tropical cyclone KATIA-17

Green alert for storm surge impact in Mexico

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.

This report is for advisory number 16 of tropical cyclone KATIA-17 issued at 9 Sep 2017 15:00:00 (GDACS Event ID 1000397). However, the calculation for advisory number is not completed. Therefore, the latest available calculation is shown. All links, data, statistics and maps refer to the latest available calculation.


Current impact estimate:

  • Population affected by cyclone-strength winds (>120km/h): 520 thousand
  • Saffir-Simpson Category: Category 2
  • Maximum sustained wind speed: 167 km/h
  • The maximum Storm surge height is  0.6m in Tenixtepec, Mexico. This height is estimated for 09 Sep 2017 03:00:00.


Previous calculations: see calculation for advisory number 2 3 4 5 6 7 8 9 10 11 12 13 14

Show forecast grid

Storm surge

View animation and affected locations in an interactive map: open

Storm surge maximum height
Storm surge maximum height (Source: JRC)
Storm surge animation
Storm surge animation (Source: JRC)

Affected locations

Date Name Country Storm surge height (m)
09 Sep 2017 03:00:00 Tenixtepec Mexico  0.6m
09 Sep 2017 02:00:00 Tamiahua Mexico  0.5m
09 Sep 2017 02:00:00 Laja Mexico  0.5m
09 Sep 2017 02:00:00 El Naranjal Mexico  0.4m
09 Sep 2017 00:00:00 La Guadalupe Mexico  0.2m
09 Sep 2017 00:00:00 Monte Gordo Mexico  0.2m
09 Sep 2017 02:00:00 Agua Dulce Mexico  0.2m
08 Sep 2017 23:00:00 El Tular Mexico  0.1m
08 Sep 2017 23:00:00 La Mata Mexico  0.1m
09 Sep 2017 05:00:00 Tecolutla Mexico  0.1m
09 Sep 2017 00:00:00 Nautla Mexico  0.1m
09 Sep 2017 01:00:00 Cabo Rojito Mexico  0.1m
06 Sep 2017 16:00:00 La Presita Mexico  0.1m
Locations affected by Storm surge (15 of 13)
Calculation based on advisory number 14 of 09 Sep 2017 03:00:00.
(Simulation using 0.5 minute resolution)

See full locations list (RSS)

More information

The atmospheric forcing included in the storm surge model are the pressure drop and the wind-water friction. The effects of the short waves induced by the wind (wave setup) and the precipitations are not yet implemented in the model. The model has been validated mainly in areas of shallow water (Caribbean, Bay of Bengal). Results in other basins may be inaccurate.

For a full list of available products related to this event, please refer to the GDACS Resources page.