Overall Green alert Tropical Cyclone for WASI-20
in Samoa, Niue

Event summary

Tropical Cyclone WASI-20 can have a low humanitarian impact based on the maximum sustained wind speed, exposed population and vulnerability.

GDACS ID TC 1000656
Name WASI-20
From - To 21 Feb - 23 Feb
Exposed countries Samoa, Niue
Exposed population No people in Category 1 or higher
Maximum wind speed 102 km/h, Tropical storm
Maximum storm surge 0.2 m (23 Feb 20:00 UTC)
Vulnerability Medium (Samoa)


For more info on GDACS alert score click here.
+ Wind Storm surge Rainfall GDACS score
GDACS 102 km/h 0.2 m n.a. 0.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF 119 km/h 0.4 m 679 mm 0.5
GFS 140 km/h 0.4 m 436 mm 0.5
ECMWF 65 km/h 0.4 m 589 mm 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, 2015. 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)

Latest media headlines

Articles: 3 | About casualties: 0 | Last hour: 0

American Samoa escapes the worst blows of Tropical Storm WasiMon, 24 Feb 2020 18:01:00 +0100.

Pago Pago, AMERICAN SAMOA — Schools are scheduled to reopen today, businesses will be back in full operation as well as normal government operations, after two back-to-back storms caused disruption on island, which first began, Feb. 16th wi
Despite downgrand to Wind Advisory expect breezy conditions tonightSun, 23 Feb 2020 05:07:00 +0100.

Pago Pago, AMERICAN SAMOA — Even though the Tropical Storm Warning has been downgraded to a Wind Advisory, expect breezy conditions through tonight. However, damaging winds will remain south of American Samoa and will not impact the territo
Move over Vicky, we now have Cyclone WASI for Samoa and NiueSat, 22 Feb 2020 10:38:00 +0100.

Vicky is no longer a Cyclone and has been replaced by another storm in the same area - Tropical Cyclone WASI. It is the third tropical storm to form in a week in the region and the second named tropical cyclone. "The energy in the area has

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: JRC (35), (1), WMO (1), INFORM (2),