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

23 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	61 km/h
Maximum storm surge	0.4 m (23 Feb 00:15 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	61 km/h	0.4 m	108 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 23 Feb 2020 00:00 UTC

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Winds (km/h)	Pop in Cat. 1 or higher	TS	Cat. 1	Cat. 2	Cat. 3	Cat. 4	Cat. 5
1	21 Feb 2020 00:00	65	-	-	-	-	-	-	-
2	21 Feb 2020 12:00	65	-	-	-	-	-	-	-
3	22 Feb 2020 00:00	58	-	-	-	-	-	-	-
4	22 Feb 2020 12:00	65	-	-	-	-	-	-	-
5	23 Feb 2020 00:00	61	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 23 Feb 2020 00:00 UTC

Level	Country	Population
50-100 mm	Tokelau, Samoa, Tonga	151,462	+
	Tokelau	906
	Samoa	150,541
	Tonga	15

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

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	280	-		-	-	-	-	-	Samoa
3	22 Feb 2020 00:00	292	-		-	-	-	-	-	Samoa
4	22 Feb 2020 12:00	347	-		-	-	-	-	-	Samoa, American Samoa, Tonga
5	23 Feb 2020 00:00	640	-		-	-	-	-	-	Tokelau, Samoa, Tonga

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 23 Feb 2020 00:15 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 23 Feb 2020 00:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	23 Feb 2020 00:15	Korosi	Fiji	0.4
	23 Feb 2020 00:15	Korotasere	Fiji	0.4
	23 Feb 2020 00:15	Naweni	Fiji	0.4
	23 Feb 2020 00:15	Nakarambo	Fiji	0.4
	23 Feb 2020 00:15	Viani	Fiji	0.4
	23 Feb 2020 00:15	Ndrekeniwai	Fiji	0.4
	23 Feb 2020 00:15	Mbangasau	Fiji	0.3
	23 Feb 2020 00:15	Malake	Fiji	0.3
	23 Feb 2020 00:00	Biagunu	Fiji	0.3
	23 Feb 2020 00:00	Lao	Fiji	0.3
	23 Feb 2020 00:00	Nailou	Fiji	0.3
	23 Feb 2020 00:00	Nawi	Fiji	0.3
	23 Feb 2020 00:00	Vunikura	Fiji	0.3
	23 Feb 2020 00:00	Namboutini	Fiji	0.2
	23 Feb 2020 00:15	Natunuka	Fiji	0.2
	23 Feb 2020 00:15	Tavua	Fiji	0.2
	23 Feb 2020 00:15	Rabulu	Fiji	0.2
	23 Feb 2020 00:15	Togowere	Fiji	0.2
	23 Feb 2020 08:00	Vangai	Fiji	0.2
	23 Feb 2020 06:45	Rave-rave	Fiji	0.2
	23 Feb 2020 06:45	Ndawara	Fiji	0.2
	23 Feb 2020 06:45	Waisa	Fiji	0.2
	23 Feb 2020 06:45	Natua	Fiji	0.2
	23 Feb 2020 00:00	Nailanga	Fiji	0.2
	23 Feb 2020 00:00	Sorokoba	Fiji	0.2
	23 Feb 2020 00:00	Ba	Fiji	0.2
	23 Feb 2020 03:45	Napuka	Fiji	0.2
	23 Feb 2020 00:15	Koroinasolo	Fiji	0.2
	23 Feb 2020 00:15	Savu Sau	Fiji	0.2
	23 Feb 2020 00:15	Navinggiri	Fiji	0.2
	23 Feb 2020 00:15	Yangganga	Fiji	0.2
	23 Feb 2020 00:15	Ndalomo	Fiji	0.2
	23 Feb 2020 00:15	Nayavutoka	Fiji	0.2
	23 Feb 2020 00:15	Lawaki	Fiji	0.2
	23 Feb 2020 00:15	Naingani	Fiji	0.2
	23 Feb 2020 03:00	Korovou	Fiji	0.2
	23 Feb 2020 03:00	Lodoni	Fiji	0.2
	23 Feb 2020 03:00	Navuti	Fiji	0.2
	23 Feb 2020 03:00	Nasaga	Fiji	0.2
	23 Feb 2020 03:00	Rukuruku	Fiji	0.2
	23 Feb 2020 07:00	Lovoni	Fiji	0.2
	23 Feb 2020 07:00	Nauouo	Fiji	0.2
	23 Feb 2020 07:00	Levuka	Fiji	0.2
	23 Feb 2020 00:15	Rakiraki	Fiji	0.2
	23 Feb 2020 00:15	Vaileka	Fiji	0.2
	23 Feb 2020 00:15	Nanukuloa	Fiji	0.2
	23 Feb 2020 00:15	Nasau	Fiji	0.2
	23 Feb 2020 08:15	Namukalau	Fiji	0.2
	23 Feb 2020 08:15	Tawake	Fiji	0.2
	23 Feb 2020 08:15	Nukusa	Fiji	0.2
	23 Feb 2020 08:15	Nambouono	Fiji	0.2
	23 Feb 2020 09:30	Kavala	Fiji	0.2
	23 Feb 2020 09:30	Nabouwalu	Fiji	0.2
	23 Feb 2020 09:30	Vabea	Fiji	0.2
	23 Feb 2020 00:00	Ndenimanu	Fiji	0.1
	23 Feb 2020 08:30	Nawailevu	Fiji	0.1
	23 Feb 2020 08:30	Nasarowangga	Fiji	0.1
	23 Feb 2020 08:30	Navindamu	Fiji	0.1
	23 Feb 2020 11:45	Nagumu	Fiji	0.1
	23 Feb 2020 01:00	Nanduri	Fiji	0.1
	23 Feb 2020 01:00	Vatutandova	Fiji	0.1
	23 Feb 2020 00:00	Naruwai	Fiji	0.1
	23 Feb 2020 00:00	Nabouwalu	Fiji	0.1
	23 Feb 2020 03:30	Kasavu	Fiji	0.1
	23 Feb 2020 03:30	Naimasimasi	Fiji	0.1
	23 Feb 2020 03:30	Ucunivanua	Fiji	0.1
	23 Feb 2020 00:00	Thavanga	Fiji	0.1
	23 Feb 2020 03:00	Nausori	Fiji	0.1
	23 Feb 2020 03:00	Cautata	Fiji	0.1
	23 Feb 2020 03:00	Dromuna	Fiji	0.1
	23 Feb 2020 03:15	Lokia	Fiji	0.1
	23 Feb 2020 03:15	Nasilai	Fiji	0.1
	23 Feb 2020 04:15	Mbangata	Fiji	0.1
	23 Feb 2020 04:15	Savusavu	Fiji	0.1
	23 Feb 2020 04:15	Naindi	Fiji	0.1
	23 Feb 2020 08:00	Vunivatu	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.