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 12 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	Niue
Exposed population	No people in Category 1 or higher
Maximum wind speed	65 km/h
Maximum storm surge	0.4 m (21 Feb 22:45 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	0.4 m	280 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

Up to Few people can be affected by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

Estimations based on the bulletin of 21 Feb 2020 12:00 UTC

Category	Country	Population
Tropical Storm	Niue	955

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	-	-	-	-	-	-	-
	2	21 Feb 2020 12:00	79	-		-	-	-	-	-	Niue

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 12:00 UTC

Level	Country	Population
100-250 mm	American Samoa	27,788	+
	American Samoa	17
	Samoa	27,771
50-100 mm	Tuvalu, Tokelau, Samoa, American Samoa, Niue	181,655	+
	Tuvalu	1,702
	Tokelau	1,337
	American Samoa	9,303
	Samoa	168,465
	Niue	848

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	330	-	-	-	-	-	-	-
	2	21 Feb 2020 12:00	795	30 thousand			-	-	-	-	Tuvalu, Tokelau, American Samoa, Samoa, Niue

Impact estimation for the next 72h

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StormSurge

0.4 m

The maximum Storm surge height is 0.4m in Korosi, Fiji. This height is estimated for 21 Feb 2020 22:45 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 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	21 Feb 2020 22:45	Korosi	Fiji	0.4
	21 Feb 2020 22:45	Korotasere	Fiji	0.4
	21 Feb 2020 22:45	Naweni	Fiji	0.4
	21 Feb 2020 22:45	Nakarambo	Fiji	0.4
	21 Feb 2020 22:45	Viani	Fiji	0.4
	21 Feb 2020 22:45	Ndrekeniwai	Fiji	0.4
	24 Feb 2020 09:30	Mbangasau	Fiji	0.3
	24 Feb 2020 09:30	Malake	Fiji	0.3
	24 Feb 2020 09:15	Biagunu	Fiji	0.3
	24 Feb 2020 09:30	Lao	Fiji	0.3
	22 Feb 2020 03:00	Korovou	Fiji	0.3
	22 Feb 2020 03:00	Lodoni	Fiji	0.3
	22 Feb 2020 03:00	Lawaki	Fiji	0.3
	22 Feb 2020 03:00	Naingani	Fiji	0.3
	22 Feb 2020 03:00	Navuti	Fiji	0.3
	22 Feb 2020 03:00	Nasaga	Fiji	0.3
	22 Feb 2020 03:00	Rukuruku	Fiji	0.3
	24 Feb 2020 09:30	Nailou	Fiji	0.3
	24 Feb 2020 09:30	Nawi	Fiji	0.3
	24 Feb 2020 09:30	Vunikura	Fiji	0.3
	21 Feb 2020 18:30	Navinggiri	Fiji	0.3
	21 Feb 2020 18:30	Yangganga	Fiji	0.3
	21 Feb 2020 18:30	Nawailevu	Fiji	0.3
	21 Feb 2020 18:30	Nasarowangga	Fiji	0.3
	21 Feb 2020 18:30	Navindamu	Fiji	0.3
	21 Feb 2020 14:45	Nailanga	Fiji	0.2
	21 Feb 2020 14:45	Sorokoba	Fiji	0.2
	21 Feb 2020 14:45	Ba	Fiji	0.2
	21 Feb 2020 14:45	Natunuka	Fiji	0.2
	24 Feb 2020 09:30	Namboutini	Fiji	0.2
	24 Feb 2020 09:45	Kasavu	Fiji	0.2
	24 Feb 2020 09:45	Nausori	Fiji	0.2
	24 Feb 2020 09:45	Lokia	Fiji	0.2
	24 Feb 2020 09:45	Naimasimasi	Fiji	0.2
	24 Feb 2020 09:45	Ucunivanua	Fiji	0.2
	24 Feb 2020 09:45	Cautata	Fiji	0.2
	24 Feb 2020 09:45	Nasilai	Fiji	0.2
	24 Feb 2020 09:45	Dromuna	Fiji	0.2
	21 Feb 2020 19:00	Napuka	Fiji	0.2
	22 Feb 2020 03:15	Tavua	Fiji	0.2
	22 Feb 2020 03:15	Rabulu	Fiji	0.2
	22 Feb 2020 03:15	Togowere	Fiji	0.2
	22 Feb 2020 16:00	Koroinasolo	Fiji	0.2
	22 Feb 2020 16:00	Savu Sau	Fiji	0.2
	22 Feb 2020 03:00	Lovoni	Fiji	0.2
	22 Feb 2020 03:00	Nauouo	Fiji	0.2
	22 Feb 2020 03:00	Levuka	Fiji	0.2
	21 Feb 2020 19:00	Namukalau	Fiji	0.2
	21 Feb 2020 19:00	Tawake	Fiji	0.2
	21 Feb 2020 19:00	Nukusa	Fiji	0.2
	21 Feb 2020 19:00	Nambouono	Fiji	0.2
	21 Feb 2020 19:15	Vangai	Fiji	0.2
	21 Feb 2020 22:45	Nagumu	Fiji	0.2
	21 Feb 2020 22:45	Nanduri	Fiji	0.2
	24 Feb 2020 06:00	Rave-rave	Fiji	0.2
	24 Feb 2020 06:00	Ndawara	Fiji	0.2
	24 Feb 2020 06:00	Waisa	Fiji	0.2
	24 Feb 2020 06:00	Natua	Fiji	0.2
	22 Feb 2020 16:00	Ndalomo	Fiji	0.2
	23 Feb 2020 01:00	Vatutandova	Fiji	0.2
	21 Feb 2020 18:15	Rakiraki	Fiji	0.2
	21 Feb 2020 18:15	Vaileka	Fiji	0.2
	21 Feb 2020 18:15	Nanukuloa	Fiji	0.2
	21 Feb 2020 18:15	Nasau	Fiji	0.2
	21 Feb 2020 18:15	Nayavutoka	Fiji	0.2
	22 Feb 2020 16:00	Ndenimanu	Fiji	0.1
	22 Feb 2020 19:30	Mbangata	Fiji	0.1
	22 Feb 2020 19:30	Savusavu	Fiji	0.1
	22 Feb 2020 19:30	Naindi	Fiji	0.1
	22 Feb 2020 20:00	Nabouwalu	Fiji	0.1
	22 Feb 2020 03:15	Galoa	Fiji	0.1
	22 Feb 2020 03:15	Yanutha	Fiji	0.1
	22 Feb 2020 03:15	Matavuralevu	Fiji	0.1
	22 Feb 2020 03:15	Pacific Harbour	Fiji	0.1
	22 Feb 2020 03:15	Waisomo	Fiji	0.1
	22 Feb 2020 03:15	Dakuimbeqa	Fiji	0.1
	22 Feb 2020 03:15	Lalati	Fiji	0.1
	22 Feb 2020 03:15	Navua	Fiji	0.1
	22 Feb 2020 03:15	Naitionitoni	Fiji	0.1
	22 Feb 2020 03:15	Mau	Fiji	0.1
	22 Feb 2020 03:15	Kavala	Fiji	0.1
	22 Feb 2020 03:15	Vabea	Fiji	0.1
	24 Feb 2020 09:30	Naruwai	Fiji	0.1
	24 Feb 2020 09:30	Nabouwalu	Fiji	0.1
	22 Feb 2020 02:45	Ndaria	Fiji	0.1
	24 Feb 2020 09:30	Thavanga	Fiji	0.1
	22 Feb 2020 16:00	Mbukama	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.