Overall Green Tropical Cyclone alert for FOUR-20 in , Fiji, Vanuatu from 11 Dec 2020 00:00 UTC to 12 Dec 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 FOUR-20

in , Fiji, Vanuatu

12 Dec 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 FOUR-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	83 km/h
Maximum storm surge	0.2 m (14 Dec 05:00 UTC)
Vulnerability	--

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	83 km/h	0.2 m	23 mm	0.5
ECMWF Overall	112 km/h	0.4 m	735 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

112 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 12 Dec 2020 12:00 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	Countries
1	10 Dec 2020 12:00	83	-	-	-	-	-	-	-
2	11 Dec 2020 00:00	61	-	-	-	-	-	-	-
3	11 Dec 2020 12:00	72	-	-	-	-	-	-	-
4	12 Dec 2020 00:00	72	-		-	-	-	-	-	New Caledonia
5	12 Dec 2020 12:00	104	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 12 Dec 2020 12:00 UTC

Level	Country	Population
100-250 mm	Fiji, Tonga, New Caledonia	152,929	+
	Fiji	137,322
	Tonga	15,430
	New Caledonia	177
50-100 mm	Tuvalu, Solomon Islands, Fiji, Wallis and Futuna, Samoa, Tonga, Vanuatu, New Caledonia	215,000	+
	Tuvalu	442
	Solomon Islands	7,282
	Fiji	161,564
	Wallis and Futuna	12,963
	Samoa	15,998
	Tonga	1,814
	Vanuatu	3,468
	New Caledonia	11,469

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	10 Dec 2020 12:00	23	-	-	-	-	-	-	-
2	11 Dec 2020 00:00	17	-	-	-	-	-	-	-
3	11 Dec 2020 12:00	20	-	-	-	-	-	-	-
4	12 Dec 2020 00:00	20	Few people	-	-	-	-	-	-	New Caledonia
5	12 Dec 2020 12:00	508	150 thousand			-	-	-	-	Tuvalu, Solomon Islands, Fiji, Wallis and Futuna, Samoa, Tonga, Vanuatu, New Caledonia

Impact estimation for the next 72h

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StormSurge

0.2 m

The maximum Storm surge height is 0.2m in Lao, Fiji. This height is estimated for 14 Dec 2020 05:00 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 12 Dec 2020 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	14 Dec 2020 05:00	Lao	Fiji	0.2
	14 Dec 2020 05:00	Nailou	Fiji	0.2
	14 Dec 2020 05:00	Nawi	Fiji	0.2
	14 Dec 2020 05:00	Vunikura	Fiji	0.2
	14 Dec 2020 05:00	Napuka	Fiji	0.2
	13 Dec 2020 14:15	Lautoka	Fiji	0.2
	13 Dec 2020 14:15	Nailanga	Fiji	0.2
	13 Dec 2020 14:15	Sorokoba	Fiji	0.2
	12 Dec 2020 23:00	Ba	Fiji	0.2
	13 Dec 2020 14:30	Moneo	New Caledonia	0.2
	13 Dec 2020 14:30	Ho	New Caledonia	0.2
	13 Dec 2020 14:30	Meomo	New Caledonia	0.2
	13 Dec 2020 14:30	Houailou	New Caledonia	0.2
	13 Dec 2020 14:30	Ouakaya	New Caledonia	0.2
	13 Dec 2020 14:30	Poro	New Caledonia	0.2
	12 Dec 2020 18:30	Takataka	Solomon Islands	0.2
	12 Dec 2020 18:30	Ahia	Solomon Islands	0.2
	14 Dec 2020 01:30	Koroinasolo	Fiji	0.2
	14 Dec 2020 01:30	Savu Sau	Fiji	0.2
	14 Dec 2020 01:30	Navinggiri	Fiji	0.2
	14 Dec 2020 01:30	Yangganga	Fiji	0.2
	14 Dec 2020 01:30	Nawailevu	Fiji	0.2
	13 Dec 2020 14:15	Namaka	Fiji	0.2
	13 Dec 2020 13:45	Natunuka	Fiji	0.2
	13 Dec 2020 13:45	Tavua	Fiji	0.2
	13 Dec 2020 13:45	Rabulu	Fiji	0.2
	13 Dec 2020 13:45	Togowere	Fiji	0.2
	13 Dec 2020 23:30	Korovou	Fiji	0.2
	13 Dec 2020 23:30	Lodoni	Fiji	0.2
	13 Dec 2020 23:30	Lawaki	Fiji	0.2
	13 Dec 2020 23:30	Ucunivanua	Fiji	0.2
	13 Dec 2020 23:30	Naingani	Fiji	0.2
	13 Dec 2020 23:30	Navuti	Fiji	0.2
	13 Dec 2020 23:30	Nasaga	Fiji	0.2
	13 Dec 2020 23:30	Rukuruku	Fiji	0.2
	13 Dec 2020 23:30	Lovoni	Fiji	0.2
	13 Dec 2020 23:15	Nabouwalu	Fiji	0.1
	13 Dec 2020 23:15	Thavanga	Fiji	0.1
	13 Dec 2020 23:15	Ndaria	Fiji	0.1
	13 Dec 2020 23:15	Rave-rave	Fiji	0.1
	12 Dec 2020 14:30	Ouanache	New Caledonia	0.1
	12 Dec 2020 14:30	Paola	New Caledonia	0.1
	12 Dec 2020 14:30	Vieux Tuho	New Caledonia	0.1
	12 Dec 2020 14:30	Touho	New Caledonia	0.1
	12 Dec 2020 14:30	Kokengone	New Caledonia	0.1
	13 Dec 2020 23:15	Vangai	Fiji	0.1
	12 Dec 2020 19:00	Mamie	New Caledonia	0.1
	12 Dec 2020 19:00	Yate-Village	New Caledonia	0.1
	12 Dec 2020 19:00	Waho	New Caledonia	0.1
	13 Dec 2020 21:45	Poum-Plage	New Caledonia	0.1
	13 Dec 2020 21:45	Arama	New Caledonia	0.1
	13 Dec 2020 21:45	Pam	New Caledonia	0.1
	13 Dec 2020 14:00	Solevu	Fiji	0.1
	14 Dec 2020 01:00	Nanduri	Fiji	0.1
	14 Dec 2020 01:00	Vatutandova	Fiji	0.1
	14 Dec 2020 01:00	Nasea	Fiji	0.1
	14 Dec 2020 16:30	Umpon Mompu	Vanuatu	0.1
	14 Dec 2020 16:30	Potnarvin	Vanuatu	0.1
	14 Dec 2020 16:30	Yawisaghuwi	Vanuatu	0.1
	14 Dec 2020 16:30	Ipota	Vanuatu	0.1
	14 Dec 2020 16:30	Ifo	Vanuatu	0.1
	12 Dec 2020 14:30	Kouaoua	New Caledonia	0.1
	13 Dec 2020 12:45	Natua	Fiji	0.1
	13 Dec 2020 12:45	Mbangata	Fiji	0.1
	13 Dec 2020 12:45	Savusavu	Fiji	0.1
	13 Dec 2020 12:45	Naindi	Fiji	0.1
	13 Dec 2020 12:45	Korosi	Fiji	0.1
	13 Dec 2020 02:00	Vunivatu	Fiji	0.1
	13 Dec 2020 02:00	Navukembuli	Fiji	0.1
	13 Dec 2020 02:00	Naua	Fiji	0.1
	13 Dec 2020 02:00	Namukalau	Fiji	0.1
	13 Dec 2020 09:30	Pek	Vanuatu	0.1
	13 Dec 2020 09:30	Ngusui	Vanuatu	0.1
	12 Dec 2020 16:15	Crepeta	Vanuatu	0.1
	13 Dec 2020 18:45	Kaokaona	Solomon Islands	0.1
	13 Dec 2020 18:45	Umara	Solomon Islands	0.1
	13 Dec 2020 18:45	Pamua	Solomon Islands	0.1
	13 Dec 2020 18:45	Sungasau	Solomon Islands	0.1
	13 Dec 2020 18:45	Tawarodo	Solomon Islands	0.1
	13 Dec 2020 18:45	Hulihale	Solomon Islands	0.1
	13 Dec 2020 18:45	Kaonasughu	Solomon Islands	0.1
	13 Dec 2020 18:45	Waimapuru	Solomon Islands	0.1
	13 Dec 2020 18:45	Mwanimauru	Solomon Islands	0.1
	13 Dec 2020 18:45	Manihinua	Solomon Islands	0.1
	13 Dec 2020 18:45	Manchuki	Solomon Islands	0.1
	13 Dec 2020 18:45	Ngorangora	Solomon Islands	0.1
	13 Dec 2020 18:45	Arohane	Solomon Islands	0.1
	13 Dec 2020 18:45	Tawani	Solomon Islands	0.1
	13 Dec 2020 18:45	Manewiriwiri	Solomon Islands	0.1
	13 Dec 2020 23:15	Nauouo	Fiji	0.1
	13 Dec 2020 23:15	Levuka	Fiji	0.1
	13 Dec 2020 14:00	Soso	Fiji	0.1
	13 Dec 2020 14:00	Somosomo	Fiji	0.1
	14 Dec 2020 12:30	Kasavu	Fiji	0.1
	14 Dec 2020 12:30	Naimasimasi	Fiji	0.1
	12 Dec 2020 20:30	Goro	New Caledonia	0.1
	12 Dec 2020 13:15	Houone	New Caledonia	0.1
	12 Dec 2020 13:15	Tiabet	New Caledonia	0.1
	12 Dec 2020 18:15	Ladhu	Vanuatu	0.1
	12 Dec 2020 18:15	Lavatavo	Vanuatu	0.1
	12 Dec 2020 18:15	Iakobone	Vanuatu	0.1
	12 Dec 2020 18:15	Hog Harbour	Vanuatu	0.1
	13 Dec 2020 14:15	Tavua	Fiji	0.1
	13 Dec 2020 23:00	Ndawara	Fiji	0.1
	13 Dec 2020 23:00	Waisa	Fiji	0.1
	12 Dec 2020 14:15	Thio	New Caledonia	0.1
	12 Dec 2020 14:15	Saint-Gabriel	New Caledonia	0.1
	12 Dec 2020 14:15	Saint Roch	New Caledonia	0.1
	12 Dec 2020 23:30	Namboutini	Fiji	0.1
	13 Dec 2020 14:15	Nalauwaki	Fiji	0.1
	13 Dec 2020 03:15	Narano	Solomon Islands	0.1
	13 Dec 2020 03:15	Napurongo	Solomon Islands	0.1
	13 Dec 2020 03:15	Naganea	Solomon Islands	0.1
	13 Dec 2020 03:15	Nakuhu	Solomon Islands	0.1
	13 Dec 2020 03:15	Naparaohau	Solomon Islands	0.1
	13 Dec 2020 03:15	Naana	Solomon Islands	0.1
	13 Dec 2020 03:15	Mwaniwowo	Solomon Islands	0.1
	13 Dec 2020 03:15	Mwarairaru	Solomon Islands	0.1
	13 Dec 2020 03:15	Maniborkosi	Solomon Islands	0.1
	13 Dec 2020 03:15	Nasuragena	Solomon Islands	0.1
	13 Dec 2020 03:15	Funakumwa	Solomon Islands	0.1
	13 Dec 2020 03:15	Tawarogha	Solomon Islands	0.1
	13 Dec 2020 03:15	Geta	Solomon Islands	0.1
	13 Dec 2020 03:15	Star Harb	Solomon Islands	0.1
	13 Dec 2020 03:15	Mami	Solomon Islands	0.1
	13 Dec 2020 03:15	Fageifa	Solomon Islands	0.1
	13 Dec 2020 03:15	Ragapu	Solomon Islands	0.1
	13 Dec 2020 03:15	Ghupuna	Solomon Islands	0.1
	12 Dec 2020 15:15	Poum	New Caledonia	0.1
	12 Dec 2020 20:45	Gadji	New Caledonia	0.1
	12 Dec 2020 20:45	Kuto	New Caledonia	0.1
	12 Dec 2020 20:45	Wapan	New Caledonia	0.1
	12 Dec 2020 20:45	Vao	New Caledonia	0.1
	12 Dec 2020 22:15	Ouasse	New Caledonia	0.1
	12 Dec 2020 19:00	Panane	New Caledonia	0.1
	12 Dec 2020 19:00	Mouane	New Caledonia	0.1
	12 Dec 2020 19:00	Ono	New Caledonia	0.1
	12 Dec 2020 19:00	Wala	New Caledonia	0.1
	12 Dec 2020 19:00	Bweo	New Caledonia	0.1
	12 Dec 2020 19:00	Pairome	New Caledonia	0.1
	13 Dec 2020 05:15	Nepoui	New Caledonia	0.1
	13 Dec 2020 05:15	Station Ouaneko	New Caledonia	0.1
	13 Dec 2020 05:15	Station de Beaupre	New Caledonia	0.1
	13 Dec 2020 09:15	Souleisere	Vanuatu	0.1
	13 Dec 2020 09:15	Piapouria	Vanuatu	0.1
	13 Dec 2020 09:15	Mae	Vanuatu	0.1
	13 Dec 2020 09:15	Tourebiou	Vanuatu	0.1
	13 Dec 2020 09:15	Atsaritibi	Vanuatu	0.1
	13 Dec 2020 09:15	Robertsons	Vanuatu	0.1
	13 Dec 2020 09:15	Terou	Vanuatu	0.1
	13 Dec 2020 09:15	Worovok	Vanuatu	0.1
	12 Dec 2020 20:00	Balaide	New Caledonia	0.1
	12 Dec 2020 20:00	Saint-Paul	New Caledonia	0.1
	14 Dec 2020 23:15	Korotasere	Fiji	0.1
	14 Dec 2020 23:15	Naweni	Fiji	0.1
	14 Dec 2020 23:15	Nakarambo	Fiji	0.1
	14 Dec 2020 23:15	Viani	Fiji	0.1
	12 Dec 2020 21:45	Loanatom	Vanuatu	0.1
	12 Dec 2020 21:45	Loounemeloupang	Vanuatu	0.1
	12 Dec 2020 21:45	Loounimhapeun	Vanuatu	0.1
	12 Dec 2020 21:45	Laounalang	Vanuatu	0.1
	12 Dec 2020 21:45	Lowkahmal	Vanuatu	0.1
	12 Dec 2020 21:45	Lownepina	Vanuatu	0.1
	12 Dec 2020 21:45	Imwareupo	Vanuatu	0.1
	12 Dec 2020 21:45	Waisisi	Vanuatu	0.1
	12 Dec 2020 14:00	Saint-Denis	New Caledonia	0.1
	12 Dec 2020 14:00	Poindimie	New Caledonia	0.1
	12 Dec 2020 14:00	Ometteux	New Caledonia	0.1
	12 Dec 2020 14:00	Bayes	New Caledonia	0.1
	12 Dec 2020 22:30	Nausori	Fiji	0.1
	12 Dec 2020 22:30	Lokia	Fiji	0.1
	12 Dec 2020 22:30	Cautata	Fiji	0.1
	12 Dec 2020 22:30	Nasilai	Fiji	0.1
	12 Dec 2020 22:30	Dromuna	Fiji	0.1
	13 Dec 2020 10:00	Bakakara	Vanuatu	0.1
	13 Dec 2020 10:00	Tenmaru	Vanuatu	0.1
	13 Dec 2020 10:00	Wowo	Vanuatu	0.1
	13 Dec 2020 10:00	Asavagas	Vanuatu	0.1
	13 Dec 2020 10:00	Laruru	Vanuatu	0.1
	13 Dec 2020 10:00	Vao	Vanuatu	0.1
	13 Dec 2020 23:15	Nakondu	Fiji	0.1
	13 Dec 2020 23:15	Nathamaki	Fiji	0.1
	13 Dec 2020 23:15	Nasau	Fiji	0.1
	12 Dec 2020 14:15	Ponerihouen	New Caledonia	0.1
	12 Dec 2020 14:15	Mou	New Caledonia	0.1
	13 Dec 2020 02:15	Ndalomo	Fiji	0.1
	14 Dec 2020 01:00	Navindamu	Fiji	0.1
	14 Dec 2020 01:00	Nagumu	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.