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

Meteorological source	ECMWF
Exposed countries	New Caledonia
Exposed population	No people in Category 1 or higher
Maximum wind speed	72 km/h
Maximum storm surge	0.2 m (12 Dec 00:00 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	72 km/h	0.2 m	20 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

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 12 Dec 2020 00:00 UTC

Category	Country	Population
Tropical Storm	New Caledonia	489

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	97	-		-	-	-	-	-	New Caledonia

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 00:00 UTC

Level	Country	Population
100-250 mm	Fiji, Vanuatu, New Caledonia	4,588	+
	Fiji	2,164
	Vanuatu	75
	New Caledonia	2,349
50-100 mm	Tuvalu, Vanuatu, Samoa, Tonga, Fiji, New Caledonia	182,812	+
	Tuvalu	39
	Fiji	13,673
	Vanuatu	7,602
	Samoa	11,678
	Tonga	23,153
	New Caledonia	126,667

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	437	5 thousand			-	-	-	-	Tuvalu, Fiji, Vanuatu, Samoa, Tonga, 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 Koroinasolo, Fiji. This height is estimated for 12 Dec 2020 00:00 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 00:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	12 Dec 2020 00:00	Koroinasolo	Fiji	0.2
	12 Dec 2020 00:00	Savu Sau	Fiji	0.2
	12 Dec 2020 00:00	Navinggiri	Fiji	0.2
	12 Dec 2020 00:00	Yangganga	Fiji	0.2
	12 Dec 2020 00:00	Nawailevu	Fiji	0.2
	13 Dec 2020 21:15	Lao	Fiji	0.2
	13 Dec 2020 21:15	Nailou	Fiji	0.2
	13 Dec 2020 21:15	Nawi	Fiji	0.2
	13 Dec 2020 21:15	Vunikura	Fiji	0.2
	13 Dec 2020 21:15	Napuka	Fiji	0.2
	12 Dec 2020 18:30	Takataka	Solomon Islands	0.2
	12 Dec 2020 18:30	Ahia	Solomon Islands	0.2
	12 Dec 2020 11:00	Moneo	New Caledonia	0.2
	12 Dec 2020 11:00	Ho	New Caledonia	0.2
	12 Dec 2020 11:00	Meomo	New Caledonia	0.2
	12 Dec 2020 11:00	Houailou	New Caledonia	0.2
	12 Dec 2020 11:00	Ouakaya	New Caledonia	0.2
	12 Dec 2020 11:00	Poro	New Caledonia	0.2
	12 Dec 2020 07:45	Arama	New Caledonia	0.2
	12 Dec 2020 07:45	Pam	New Caledonia	0.2
	12 Dec 2020 04:00	Natunuka	Fiji	0.2
	12 Dec 2020 04:00	Tavua	Fiji	0.2
	12 Dec 2020 04:00	Rabulu	Fiji	0.2
	12 Dec 2020 04:00	Togowere	Fiji	0.2
	12 Dec 2020 04:00	Korovou	Fiji	0.2
	12 Dec 2020 04:00	Lodoni	Fiji	0.2
	12 Dec 2020 04:00	Lawaki	Fiji	0.2
	12 Dec 2020 04:00	Ucunivanua	Fiji	0.2
	12 Dec 2020 04:00	Naingani	Fiji	0.2
	12 Dec 2020 04:00	Navuti	Fiji	0.2
	12 Dec 2020 04:00	Nasaga	Fiji	0.2
	12 Dec 2020 04:00	Rukuruku	Fiji	0.2
	12 Dec 2020 04:00	Lovoni	Fiji	0.2
	12 Dec 2020 00:30	Lautoka	Fiji	0.2
	12 Dec 2020 00:30	Nailanga	Fiji	0.2
	12 Dec 2020 00:30	Sorokoba	Fiji	0.2
	12 Dec 2020 00:30	Ba	Fiji	0.2
	12 Dec 2020 05:00	Ouanache	New Caledonia	0.2
	12 Dec 2020 05:00	Paola	New Caledonia	0.2
	12 Dec 2020 05:00	Vieux Tuho	New Caledonia	0.2
	12 Dec 2020 05:00	Touho	New Caledonia	0.2
	12 Dec 2020 05:00	Kokengone	New Caledonia	0.2
	12 Dec 2020 06:00	Naindi	Fiji	0.2
	12 Dec 2020 06:00	Korosi	Fiji	0.2
	12 Dec 2020 06:00	Korotasere	Fiji	0.2
	12 Dec 2020 06:00	Naweni	Fiji	0.2
	12 Dec 2020 06:00	Nakarambo	Fiji	0.2
	12 Dec 2020 06:00	Viani	Fiji	0.2
	12 Dec 2020 04:30	Mamie	New Caledonia	0.2
	12 Dec 2020 04:30	Yate-Village	New Caledonia	0.2
	12 Dec 2020 04:30	Waho	New Caledonia	0.2
	12 Dec 2020 04:30	Goro	New Caledonia	0.2
	12 Dec 2020 04:00	Kasavu	Fiji	0.2
	12 Dec 2020 04:00	Naimasimasi	Fiji	0.2
	12 Dec 2020 06:00	Abnetare	Vanuatu	0.2
	12 Dec 2020 06:00	Segond	Vanuatu	0.2
	12 Dec 2020 06:00	Luganville	Vanuatu	0.2
	12 Dec 2020 06:00	Saraotou	Vanuatu	0.2
	12 Dec 2020 06:00	Palikoulo	Vanuatu	0.2
	13 Dec 2020 14:30	Namaka	Fiji	0.2
	12 Dec 2020 00:15	Vatutandova	Fiji	0.2
	12 Dec 2020 00:15	Nasea	Fiji	0.2
	12 Dec 2020 00:15	Vunivatu	Fiji	0.2
	12 Dec 2020 00:15	Navukembuli	Fiji	0.2
	14 Dec 2020 01:15	Vangai	Fiji	0.2
	12 Dec 2020 06:30	Kouaoua	New Caledonia	0.2
	12 Dec 2020 01:30	Naua	Fiji	0.2
	12 Dec 2020 01:30	Namukalau	Fiji	0.2
	12 Dec 2020 14:45	Poum-Plage	New Caledonia	0.1
	12 Dec 2020 09:30	Pek	Vanuatu	0.1
	12 Dec 2020 09:30	Crepeta	Vanuatu	0.1
	12 Dec 2020 09:30	Ngusui	Vanuatu	0.1
	12 Dec 2020 02:30	Kaokaona	Solomon Islands	0.1
	12 Dec 2020 02:30	Umara	Solomon Islands	0.1
	12 Dec 2020 02:30	Pamua	Solomon Islands	0.1
	12 Dec 2020 02:30	Sungasau	Solomon Islands	0.1
	12 Dec 2020 02:30	Tawarodo	Solomon Islands	0.1
	12 Dec 2020 02:30	Hulihale	Solomon Islands	0.1
	12 Dec 2020 02:30	Kaonasughu	Solomon Islands	0.1
	12 Dec 2020 02:30	Waimapuru	Solomon Islands	0.1
	12 Dec 2020 02:30	Mwanimauru	Solomon Islands	0.1
	12 Dec 2020 02:30	Manihinua	Solomon Islands	0.1
	12 Dec 2020 02:30	Manchuki	Solomon Islands	0.1
	12 Dec 2020 02:30	Ngorangora	Solomon Islands	0.1
	12 Dec 2020 02:30	Arohane	Solomon Islands	0.1
	12 Dec 2020 02:30	Tawani	Solomon Islands	0.1
	12 Dec 2020 02:30	Manewiriwiri	Solomon Islands	0.1
	12 Dec 2020 10:45	Tiabet	New Caledonia	0.1
	12 Dec 2020 00:15	Nasarowangga	Fiji	0.1
	12 Dec 2020 05:00	Saint-Paul	New Caledonia	0.1
	12 Dec 2020 05:00	Pouebo	New Caledonia	0.1
	12 Dec 2020 05:00	Yambe	New Caledonia	0.1
	12 Dec 2020 05:00	Diahoue	New Caledonia	0.1
	12 Dec 2020 05:00	Colnett	New Caledonia	0.1
	12 Dec 2020 04:00	Solevu	Fiji	0.1
	12 Dec 2020 05:45	Ndrekeniwai	Fiji	0.1
	12 Dec 2020 05:45	Mbangasau	Fiji	0.1
	14 Dec 2020 21:15	Umpon Mompu	Vanuatu	0.1
	14 Dec 2020 21:15	Potnarvin	Vanuatu	0.1
	14 Dec 2020 21:15	Yawisaghuwi	Vanuatu	0.1
	14 Dec 2020 21:15	Ipota	Vanuatu	0.1
	14 Dec 2020 21:15	Ifo	Vanuatu	0.1
	12 Dec 2020 03:45	Nauouo	Fiji	0.1
	12 Dec 2020 03:45	Levuka	Fiji	0.1
	12 Dec 2020 22:45	Natua	Fiji	0.1
	12 Dec 2020 22:45	Mbangata	Fiji	0.1
	12 Dec 2020 22:45	Savusavu	Fiji	0.1
	12 Dec 2020 03:15	Rakiraki	Fiji	0.1
	12 Dec 2020 03:15	Vaileka	Fiji	0.1
	12 Dec 2020 03:15	Nanukuloa	Fiji	0.1
	12 Dec 2020 03:15	Nasau	Fiji	0.1
	12 Dec 2020 14:30	Ndawara	Fiji	0.1
	12 Dec 2020 14:30	Waisa	Fiji	0.1
	12 Dec 2020 05:00	Nouville	New Caledonia	0.1
	12 Dec 2020 05:00	Noumea	New Caledonia	0.1
	12 Dec 2020 05:00	Plum	New Caledonia	0.1
	12 Dec 2020 06:30	Houone	New Caledonia	0.1
	13 Dec 2020 18:30	Narano	Solomon Islands	0.1
	13 Dec 2020 18:30	Napurongo	Solomon Islands	0.1
	13 Dec 2020 18:30	Naganea	Solomon Islands	0.1
	13 Dec 2020 18:30	Nakuhu	Solomon Islands	0.1
	13 Dec 2020 18:30	Naparaohau	Solomon Islands	0.1
	13 Dec 2020 18:30	Naana	Solomon Islands	0.1
	13 Dec 2020 18:30	Mwaniwowo	Solomon Islands	0.1
	13 Dec 2020 18:30	Mwarairaru	Solomon Islands	0.1
	13 Dec 2020 18:30	Maniborkosi	Solomon Islands	0.1
	13 Dec 2020 18:30	Nasuragena	Solomon Islands	0.1
	13 Dec 2020 18:30	Funakumwa	Solomon Islands	0.1
	13 Dec 2020 18:30	Tawarogha	Solomon Islands	0.1
	13 Dec 2020 18:30	Geta	Solomon Islands	0.1
	13 Dec 2020 18:30	Star Harb	Solomon Islands	0.1
	13 Dec 2020 18:30	Mami	Solomon Islands	0.1
	13 Dec 2020 18:30	Fageifa	Solomon Islands	0.1
	13 Dec 2020 18:30	Ragapu	Solomon Islands	0.1
	13 Dec 2020 18:30	Ghupuna	Solomon Islands	0.1
	12 Dec 2020 11:15	Poum	New Caledonia	0.1
	12 Dec 2020 20:30	Gadji	New Caledonia	0.1
	12 Dec 2020 20:30	Kuto	New Caledonia	0.1
	12 Dec 2020 20:30	Wapan	New Caledonia	0.1
	12 Dec 2020 20:30	Vao	New Caledonia	0.1
	12 Dec 2020 10:30	Ouasse	New Caledonia	0.1
	12 Dec 2020 05:15	Panane	New Caledonia	0.1
	12 Dec 2020 05:15	Mouane	New Caledonia	0.1
	12 Dec 2020 05:15	Ono	New Caledonia	0.1
	12 Dec 2020 05:15	Wala	New Caledonia	0.1
	12 Dec 2020 05:15	Bweo	New Caledonia	0.1
	12 Dec 2020 05:15	Pairome	New Caledonia	0.1
	12 Dec 2020 05:15	Balaide	New Caledonia	0.1
	14 Dec 2020 01:15	Ndalomo	Fiji	0.1
	12 Dec 2020 05:00	Paagoumene	New Caledonia	0.1
	12 Dec 2020 05:00	Koumac	New Caledonia	0.1
	12 Dec 2020 05:00	Kaala-Gomen	New Caledonia	0.1
	12 Dec 2020 05:00	Dumbea	New Caledonia	0.1
	12 Dec 2020 05:00	Comm. du Mont-Dore	New Caledonia	0.1
	12 Dec 2020 05:00	Saint-Louis	New Caledonia	0.1
	12 Dec 2020 00:15	Nausori	Fiji	0.1
	12 Dec 2020 00:15	Lokia	Fiji	0.1
	12 Dec 2020 00:15	Cautata	Fiji	0.1
	12 Dec 2020 00:15	Nasilai	Fiji	0.1
	12 Dec 2020 00:15	Dromuna	Fiji	0.1
	12 Dec 2020 04:45	Paita	New Caledonia	0.1
	12 Dec 2020 11:30	Nabouwalu	Fiji	0.1
	12 Dec 2020 11:30	Thavanga	Fiji	0.1
	12 Dec 2020 11:30	Ndaria	Fiji	0.1
	12 Dec 2020 11:30	Rave-rave	Fiji	0.1
	12 Dec 2020 04:45	Loanatom	Vanuatu	0.1
	12 Dec 2020 04:45	Loounemeloupang	Vanuatu	0.1
	12 Dec 2020 04:45	Loounimhapeun	Vanuatu	0.1
	12 Dec 2020 04:45	Laounalang	Vanuatu	0.1
	12 Dec 2020 04:45	Lowkahmal	Vanuatu	0.1
	12 Dec 2020 04:45	Lownepina	Vanuatu	0.1
	12 Dec 2020 04:45	Imwareupo	Vanuatu	0.1
	12 Dec 2020 04:45	Waisisi	Vanuatu	0.1
	12 Dec 2020 01:15	Tenmaru	Vanuatu	0.1
	12 Dec 2020 01:15	Wowo	Vanuatu	0.1
	12 Dec 2020 01:15	Asavagas	Vanuatu	0.1
	12 Dec 2020 01:15	Laruru	Vanuatu	0.1
	12 Dec 2020 01:15	Vao	Vanuatu	0.1
	13 Dec 2020 14:15	Tavua	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 09:45	Malake	Fiji	0.1
	12 Dec 2020 09:45	Biagunu	Fiji	0.1
	12 Dec 2020 00:00	Nanduri	Fiji	0.1
	12 Dec 2020 09:00	Namboutini	Fiji	0.1
	12 Dec 2020 09:00	Tawake	Fiji	0.1
	12 Dec 2020 03:15	Soso	Fiji	0.1
	12 Dec 2020 03:15	Somosomo	Fiji	0.1
	12 Dec 2020 03:15	Matayalevu	Fiji	0.1
	12 Dec 2020 03:15	Matacawalevu	Fiji	0.1
	12 Dec 2020 03:15	Sisili	Fiji	0.1
	12 Dec 2020 20:15	Saint-Denis	New Caledonia	0.1
	12 Dec 2020 20:15	Poindimie	New Caledonia	0.1
	12 Dec 2020 20:15	Ometteux	New Caledonia	0.1
	12 Dec 2020 20:15	Bayes	New Caledonia	0.1
	13 Dec 2020 14:15	Nalauwaki	Fiji	0.1
	12 Dec 2020 06:00	Ladhu	Vanuatu	0.1
	12 Dec 2020 06:00	Lavatavo	Vanuatu	0.1
	12 Dec 2020 06:00	Iakobone	Vanuatu	0.1
	12 Dec 2020 06:00	Hog Harbour	Vanuatu	0.1
	12 Dec 2020 08:00	Fagani	Solomon Islands	0.1
	12 Dec 2020 08:00	Bio I	Solomon Islands	0.1
	12 Dec 2020 08:00	Suenn	Solomon Islands	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.