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

22 Feb 2020 18 UTC

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to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

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	GFS
Exposed countries	Niue
Exposed population	No people in Category 1 or higher
Maximum wind speed	104 km/h
Maximum storm surge	0.3 m (23 Feb 08:15 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
GFS Current	104 km/h	0.3 m	94 mm	0.5
GFS Overall	140 km/h	0.4 m	436 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

140 km/h

Up to 1 thousand can be affected by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

Estimations based on the bulletin of 22 Feb 2020 18:00 UTC

Category	Country	Population
Tropical Storm	Niue	1,190

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	Countries
1	21 Feb 2020 12:00	83	-	-	-	-	-	-	-
2	21 Feb 2020 18:00	83	-	-	-	-	-	-	-
3	22 Feb 2020 00:00	115	-		-	-	-	-	-	Samoa
4	22 Feb 2020 06:00	140	3 thousand			-	-	-	-	Samoa
5	22 Feb 2020 12:00	101	-		-	-	-	-	-	Samoa
6	22 Feb 2020 18:00	104	-		-	-	-	-	-	Niue

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 22 Feb 2020 18:00 UTC

Level	Country	Population
100-250 mm	Niue	84
50-100 mm	Tuvalu, Tokelau, Cook Islands, American Samoa, Fiji, Niue	10,673	+
	Tuvalu	6,133
	Tokelau	833
	Cook Islands	299
	American Samoa	775
	Fiji	1,527
	Niue	1,106

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 12:00	230	-	-	-	-	-	-	-
2	21 Feb 2020 18:00	218	-	-	-	-	-	-	-
3	22 Feb 2020 00:00	174	-		-	-	-	-	-	Samoa
4	22 Feb 2020 06:00	177	-		-	-	-	-	-	Samoa
5	22 Feb 2020 12:00	109	-	-	-	-	-	-	-
6	22 Feb 2020 18:00	222	Few people			-	-	-	-	Tuvalu, Tokelau, Cook Islands, American Samoa, Fiji, Niue

Impact estimation for the next 72h

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StormSurge

0.3 m

The maximum Storm surge height is 0.3m in Korosi, Fiji. This height is estimated for 23 Feb 2020 08:15 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 22 Feb 2020 18:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	23 Feb 2020 08:15	Korosi	Fiji	0.3
	23 Feb 2020 08:15	Korotasere	Fiji	0.3
	23 Feb 2020 08:15	Naweni	Fiji	0.3
	23 Feb 2020 08:15	Nakarambo	Fiji	0.3
	23 Feb 2020 08:15	Viani	Fiji	0.3
	23 Feb 2020 08:15	Ndrekeniwai	Fiji	0.3
	23 Feb 2020 19:30	Mbangasau	Fiji	0.3
	23 Feb 2020 08:45	Malake	Fiji	0.3
	23 Feb 2020 08:45	Biagunu	Fiji	0.3
	23 Feb 2020 08:45	Namboutini	Fiji	0.3
	23 Feb 2020 08:45	Nailou	Fiji	0.3
	23 Feb 2020 08:45	Lao	Fiji	0.3
	23 Feb 2020 08:45	Nawi	Fiji	0.3
	23 Feb 2020 08:45	Vunikura	Fiji	0.3
	23 Feb 2020 08:45	Napuka	Fiji	0.3
	22 Feb 2020 18:45	Nanduri	Fiji	0.3
	22 Feb 2020 18:45	Vatutandova	Fiji	0.3
	23 Feb 2020 04:15	Navinggiri	Fiji	0.3
	23 Feb 2020 04:15	Yangganga	Fiji	0.3
	23 Feb 2020 04:15	Nawailevu	Fiji	0.3
	23 Feb 2020 04:15	Nasarowangga	Fiji	0.3
	23 Feb 2020 04:15	Navindamu	Fiji	0.3
	23 Feb 2020 12:00	Vangai	Fiji	0.3
	23 Feb 2020 00:45	Natunuka	Fiji	0.3
	23 Feb 2020 00:45	Tavua	Fiji	0.3
	23 Feb 2020 00:45	Rabulu	Fiji	0.3
	23 Feb 2020 00:45	Togowere	Fiji	0.3
	23 Feb 2020 04:00	Koroinasolo	Fiji	0.2
	23 Feb 2020 04:00	Savu Sau	Fiji	0.2
	22 Feb 2020 20:00	Korovou	Fiji	0.2
	22 Feb 2020 20:00	Lodoni	Fiji	0.2
	22 Feb 2020 20:00	Lawaki	Fiji	0.2
	22 Feb 2020 20:00	Naingani	Fiji	0.2
	22 Feb 2020 20:00	Navuti	Fiji	0.2
	22 Feb 2020 20:00	Nasaga	Fiji	0.2
	22 Feb 2020 20:00	Rukuruku	Fiji	0.2
	23 Feb 2020 08:45	Namukalau	Fiji	0.2
	23 Feb 2020 08:45	Tawake	Fiji	0.2
	23 Feb 2020 08:45	Nukusa	Fiji	0.2
	24 Feb 2020 04:45	Rakiraki	Fiji	0.2
	24 Feb 2020 04:45	Vaileka	Fiji	0.2
	24 Feb 2020 04:45	Nanukuloa	Fiji	0.2
	24 Feb 2020 04:45	Nasau	Fiji	0.2
	23 Feb 2020 08:15	Nailanga	Fiji	0.2
	23 Feb 2020 08:15	Sorokoba	Fiji	0.2
	23 Feb 2020 08:15	Ba	Fiji	0.2
	25 Feb 2020 11:00	Rave-rave	Fiji	0.2
	25 Feb 2020 11:00	Ndawara	Fiji	0.2
	25 Feb 2020 11:00	Waisa	Fiji	0.2
	25 Feb 2020 11:00	Natua	Fiji	0.2
	23 Feb 2020 04:15	Ndalomo	Fiji	0.2
	22 Feb 2020 19:30	Nayavutoka	Fiji	0.2
	24 Feb 2020 03:45	Mbangata	Fiji	0.2
	24 Feb 2020 03:45	Savusavu	Fiji	0.2
	24 Feb 2020 03:45	Naindi	Fiji	0.2
	22 Feb 2020 20:45	Kasavu	Fiji	0.2
	22 Feb 2020 20:45	Naimasimasi	Fiji	0.2
	22 Feb 2020 20:45	Ucunivanua	Fiji	0.2
	24 Feb 2020 22:00	Nagumu	Fiji	0.2
	25 Feb 2020 14:15	Nausori	Fiji	0.2
	25 Feb 2020 14:15	Lokia	Fiji	0.2
	25 Feb 2020 14:15	Cautata	Fiji	0.2
	25 Feb 2020 14:15	Nasilai	Fiji	0.2
	25 Feb 2020 14:15	Dromuna	Fiji	0.2
	23 Feb 2020 08:45	Nambouono	Fiji	0.2
	23 Feb 2020 04:15	Ndenimanu	Fiji	0.2
	25 Feb 2020 06:15	Lovoni	Fiji	0.1
	25 Feb 2020 06:15	Nauouo	Fiji	0.1
	25 Feb 2020 06:15	Levuka	Fiji	0.1
	25 Feb 2020 06:00	Ndaria	Fiji	0.1
	23 Feb 2020 08:00	Nabouwalu	Fiji	0.1
	23 Feb 2020 08:15	Thavanga	Fiji	0.1
	25 Feb 2020 06:00	Naruwai	Fiji	0.1
	25 Feb 2020 06:00	Nabouwalu	Fiji	0.1
	25 Feb 2020 06:00	Korovisilou	Fiji	0.1
	25 Feb 2020 06:00	Galoa	Fiji	0.1
	25 Feb 2020 06:00	Yanutha	Fiji	0.1
	25 Feb 2020 06:00	Matavuralevu	Fiji	0.1
	25 Feb 2020 06:00	Pacific Harbour	Fiji	0.1
	25 Feb 2020 06:00	Waisomo	Fiji	0.1
	25 Feb 2020 06:00	Dakuimbeqa	Fiji	0.1
	25 Feb 2020 06:00	Lalati	Fiji	0.1
	25 Feb 2020 06:00	Navua	Fiji	0.1
	25 Feb 2020 06:00	Naitionitoni	Fiji	0.1
	22 Feb 2020 19:15	Nasea	Fiji	0.1
	22 Feb 2020 19:15	Vunivatu	Fiji	0.1
	23 Feb 2020 03:45	Navukembuli	Fiji	0.1
	23 Feb 2020 03:45	Naua	Fiji	0.1
	25 Feb 2020 06:00	Makongai	Fiji	0.1
	25 Feb 2020 10:30	Mau	Fiji	0.1
	24 Feb 2020 22:00	Mbukama	Fiji	0.1
	24 Feb 2020 22:00	Yasawairara	Fiji	0.1
	23 Feb 2020 16:15	Kavala	Fiji	0.1
	23 Feb 2020 16:15	Vabea	Fiji	0.1
	25 Feb 2020 05:45	Korovou	Fiji	0.1
	25 Feb 2020 06:00	Korolevu	Fiji	0.1
	25 Feb 2020 06:00	Vatukarasa	Fiji	0.1
	25 Feb 2020 05:45	Navakawau	Fiji	0.1
	25 Feb 2020 06:00	Taunovo	Fiji	0.1
	25 Feb 2020 06:00	Bouwanga	Fiji	0.1
	25 Feb 2020 06:00	Nakondu	Fiji	0.1
	25 Feb 2020 06:00	Nathamaki	Fiji	0.1
	25 Feb 2020 06:00	Nasau	Fiji	0.1
	25 Feb 2020 06:00	Sawaieke	Fiji	0.1
	25 Feb 2020 06:00	Vione	Fiji	0.1
	25 Feb 2020 06:00	Dalice	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.