Overall Green Tropical Cyclone alert for WASI-20 in Samoa, Niue from 21 Feb 2020 12:00 UTC to 23 Feb 2020 12:00 UTC

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 Green alert Tropical Cyclone for WASI-20

in Samoa, Niue

21 Feb 2020 00 UTC

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to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

GFS
HWRF
ECMWF

Impact based on all weather systems in the area

Impact

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

Meteorological source	ECMWF
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	65 km/h
Maximum storm surge	0.3 m (21 Feb 11:15 UTC)
Vulnerability	Medium (Samoa)

GDACS Score

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
ECMWF Current	65 km/h	0.3 m	330 mm	0.5
ECMWF Overall	65 km/h	0.4 m	589 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

65 km/h

No people by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 21 Feb 2020 00:00 UTC

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

Alert	N°	Date (UTC)	Max Winds (km/h)	Pop in Cat. 1 or higher	TS	Cat. 1	Cat. 2	Cat. 3	Cat. 4	Cat. 5	Countries
	1	21 Feb 2020 00:00	65	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 21 Feb 2020 00:00 UTC

Level	Country	Population
100-250 mm	Tokelau, American Samoa	121,095	+
	Tokelau	906
	American Samoa	282
	Samoa	119,907
50-100 mm	Tuvalu, Tokelau, Samoa, American Samoa, Tonga	135,846	+
	Tuvalu	7,969
	Tokelau	431
	American Samoa	54,391
	Samoa	72,925
	Tonga	130

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

Alert	N°	Date (UTC)	Max Rainfall (mm)	Pop >100mm or higher	50-100	100-250	250-500	500-750	750-1000	>1000	Countries
	1	21 Feb 2020 00:00	449	120 thousand			-	-	-	-	Tuvalu, Tokelau, American Samoa, Samoa, Tonga

Impact estimation for the next 72h

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StormSurge

0.3 m

The maximum Storm surge height is 0.3m in Nailanga, Fiji. This height is estimated for 21 Feb 2020 11:15 UTC .

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.

Storm Surge Exposed population - AoIs

Storm Surge Exposed locations

Calculation based on the bulletin of 21 Feb 2020 00:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	21 Feb 2020 11:15	Nailanga	Fiji	0.3
	21 Feb 2020 11:15	Sorokoba	Fiji	0.3
	21 Feb 2020 11:15	Ba	Fiji	0.3
	21 Feb 2020 11:15	Natunuka	Fiji	0.3
	21 Feb 2020 11:00	Korosi	Fiji	0.2
	21 Feb 2020 11:00	Korotasere	Fiji	0.2
	21 Feb 2020 11:00	Naweni	Fiji	0.2
	21 Feb 2020 11:00	Nakarambo	Fiji	0.2
	21 Feb 2020 11:00	Viani	Fiji	0.2
	21 Feb 2020 11:00	Ndrekeniwai	Fiji	0.2
	21 Feb 2020 11:00	Mbangasau	Fiji	0.2
	21 Feb 2020 11:00	Tavua	Fiji	0.2
	21 Feb 2020 11:00	Rabulu	Fiji	0.2
	21 Feb 2020 11:00	Togowere	Fiji	0.2
	21 Feb 2020 11:00	Malake	Fiji	0.2
	21 Feb 2020 10:30	Korovou	Fiji	0.2
	21 Feb 2020 10:30	Lodoni	Fiji	0.2
	21 Feb 2020 10:30	Lawaki	Fiji	0.2
	21 Feb 2020 10:30	Naingani	Fiji	0.2
	21 Feb 2020 10:30	Navuti	Fiji	0.2
	21 Feb 2020 10:30	Nasaga	Fiji	0.2
	21 Feb 2020 10:30	Rukuruku	Fiji	0.2
	21 Feb 2020 11:00	Biagunu	Fiji	0.2
	21 Feb 2020 11:00	Lao	Fiji	0.2
	21 Feb 2020 10:30	Lovoni	Fiji	0.2
	21 Feb 2020 10:30	Nauouo	Fiji	0.2
	21 Feb 2020 10:30	Levuka	Fiji	0.2
	21 Feb 2020 10:30	Rakiraki	Fiji	0.2
	21 Feb 2020 10:30	Vaileka	Fiji	0.2
	21 Feb 2020 10:30	Nanukuloa	Fiji	0.2
	21 Feb 2020 10:30	Nasau	Fiji	0.2
	21 Feb 2020 11:30	Navinggiri	Fiji	0.2
	21 Feb 2020 11:30	Yangganga	Fiji	0.2
	21 Feb 2020 11:30	Nawailevu	Fiji	0.2
	21 Feb 2020 11:30	Nasarowangga	Fiji	0.2
	21 Feb 2020 11:30	Navindamu	Fiji	0.2
	21 Feb 2020 11:30	Nanduri	Fiji	0.2
	21 Feb 2020 11:30	Vatutandova	Fiji	0.2
	21 Feb 2020 11:00	Koroinasolo	Fiji	0.2
	21 Feb 2020 11:00	Savu Sau	Fiji	0.2
	21 Feb 2020 11:00	Ndalomo	Fiji	0.2
	21 Feb 2020 10:45	Nayavutoka	Fiji	0.2
	21 Feb 2020 06:45	Kasavu	Fiji	0.2
	21 Feb 2020 06:45	Nausori	Fiji	0.2
	21 Feb 2020 06:45	Lokia	Fiji	0.2
	21 Feb 2020 06:45	Naimasimasi	Fiji	0.2
	21 Feb 2020 06:45	Ucunivanua	Fiji	0.2
	21 Feb 2020 06:45	Cautata	Fiji	0.2
	21 Feb 2020 06:45	Nasilai	Fiji	0.2
	21 Feb 2020 06:45	Dromuna	Fiji	0.2
	21 Feb 2020 11:00	Nailou	Fiji	0.2
	21 Feb 2020 11:00	Nawi	Fiji	0.2
	21 Feb 2020 11:00	Vunikura	Fiji	0.2
	21 Feb 2020 11:15	Ndenimanu	Fiji	0.2
	21 Feb 2020 10:30	Rave-rave	Fiji	0.1
	21 Feb 2020 10:30	Ndawara	Fiji	0.1
	21 Feb 2020 10:30	Waisa	Fiji	0.1
	21 Feb 2020 10:30	Natua	Fiji	0.1
	21 Feb 2020 11:00	Naruwai	Fiji	0.1
	21 Feb 2020 11:00	Nabouwalu	Fiji	0.1
	21 Feb 2020 10:00	Thavanga	Fiji	0.1
	21 Feb 2020 10:00	Ndaria	Fiji	0.1
	21 Feb 2020 10:30	Namboutini	Fiji	0.1
	21 Feb 2020 10:45	Mbukama	Fiji	0.1
	21 Feb 2020 10:45	Napuka	Fiji	0.1
	21 Feb 2020 10:45	Yasawairara	Fiji	0.1
	21 Feb 2020 10:15	Mbangata	Fiji	0.1
	21 Feb 2020 10:15	Savusavu	Fiji	0.1
	21 Feb 2020 10:15	Naindi	Fiji	0.1
	21 Feb 2020 03:30	Nagumu	Fiji	0.1
	21 Feb 2020 10:15	Yanutha	Fiji	0.1
	21 Feb 2020 10:15	Matavuralevu	Fiji	0.1
	21 Feb 2020 10:15	Pacific Harbour	Fiji	0.1
	21 Feb 2020 10:15	Waisomo	Fiji	0.1
	21 Feb 2020 10:15	Dakuimbeqa	Fiji	0.1
	21 Feb 2020 10:15	Lalati	Fiji	0.1
	21 Feb 2020 10:15	Navua	Fiji	0.1
	21 Feb 2020 10:15	Naitionitoni	Fiji	0.1
	21 Feb 2020 10:15	Mau	Fiji	0.1
	21 Feb 2020 10:00	Keteira	Fiji	0.1
	21 Feb 2020 03:45	Vunivatu	Fiji	0.1
	21 Feb 2020 03:45	Navukembuli	Fiji	0.1
	21 Feb 2020 03:45	Naua	Fiji	0.1
	21 Feb 2020 10:15	Nabouwalu	Fiji	0.1
	21 Feb 2020 10:15	Kavala	Fiji	0.1
	21 Feb 2020 10:15	Vabea	Fiji	0.1
	21 Feb 2020 10:30	Nasau	Fiji	0.1
	21 Feb 2020 10:30	Talaulia	Fiji	0.1
	21 Feb 2020 10:30	Nalotu	Fiji	0.1
	21 Feb 2020 10:30	Vunisea	Fiji	0.1
	21 Feb 2020 10:30	Mburelevu	Fiji	0.1
	21 Feb 2020 10:30	Mokoisa	Fiji	0.1
	21 Feb 2020 10:30	Naikorokoro	Fiji	0.1
	21 Feb 2020 10:30	Namara	Fiji	0.1
	21 Feb 2020 10:30	Gasele	Fiji	0.1

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.