Overall Red alert Tropical Cyclone for GITA-18
in Tonga

Event summary

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

GDACS ID TC 1000436
Name GITA-18
From - To 09 Feb - 19 Feb
Exposed countries Tonga
Exposed population 80 thousand in Category 1 or higher
Maximum wind speed 231 km/h Category 4
Maximum storm surge 0.4 m (12 Feb 08:00 UTC)
Vulnerability Medium (Tonga)


For more info on GDACS alert score click here.
Wind Storm surge Rainfall GDACS score
GDACS 231 km/h 0.4 m n.a. 1.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF 155 km/h 1 m n.a. 0.5
GFS 135 km/h 1 m n.a. 0.5
ECMWF 94 km/h 0.5 m n.a. 0.5
Beta Version - All weather systems in the area: maximum expected impact (wind, storm surge, rainfall)
Maximum expected impact (wind, storm surge and rainfall) using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Detailed event map. European Union, 2021. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EMSR (2), UNOSAT (1), EC-JRC (38), (1), WMO (1), INFORM (2),