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.

Green Tropical Cyclone alert in for FRED-15 from 30 Aug 2015 05:30 UTC to 06 Sep 2015 21:00 UTC
Storm surge for tropical cyclone FRED-15

Green alert for storm surge impact in Cape Verde

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 7 of tropical cyclone FRED-15 issued at 31 Aug 2015 15:00:00 (GDACS Event ID 1000205).


Current impact estimate:

  • Population affected by cyclone-strength winds (>120km/h): No people affected
  • Saffir-Simpson Category: Category 1
  • Maximum sustained wind speed: 139 km/h
  • The maximum Storm surge height is  0.3m in Jalunga, Cape Verde. This height is estimated for 31 Aug 2015 18:00:00.


Previous calculations: see calculation for advisory number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

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)
31 Aug 2015 18:00:00 Jalunga Cape Verde  0.3m
31 Aug 2015 18:00:00 Carrical Cape Verde  0.3m
31 Aug 2015 18:00:00 Castilhiano Cape Verde  0.3m
31 Aug 2015 18:00:00 Castihiano Cape Verde  0.3m
31 Aug 2015 18:00:00 Buqueirao Cape Verde  0.3m
31 Aug 2015 18:00:00 Preguica Cape Verde  0.3m
31 Aug 2015 18:00:00 Cruz de Baixo Cape Verde  0.3m
31 Aug 2015 18:00:00 Figueira de Coxe Cape Verde  0.3m
31 Aug 2015 18:00:00 Casinhas Cape Verde  0.3m
31 Aug 2015 18:00:00 Morre Braz Cape Verde  0.3m
31 Aug 2015 18:00:00 Morro Alto Cape Verde  0.3m
31 Aug 2015 18:00:00 Juncalinho Cape Verde  0.3m
31 Aug 2015 18:00:00 Urzuleiros Cape Verde  0.3m
01 Sep 2015 01:00:00 Janela Cape Verde  0.3m
Locations affected by Storm surge (15 of 95)
Calculation based on advisory number 7 of 31 Aug 2015 15:00:00.
(Simulation using 2 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.