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

click on

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	HWRF
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	97 km/h
Maximum storm surge	0.3 m (12 Dec 06:00 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
HWRF Current	97 km/h	0.3 m	27 mm	0.5
HWRF Overall	162 km/h	0.5 m	1023 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

162 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 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	11 Dec 2020 00:00	65	-	-	-	-	-	-	-
2	11 Dec 2020 06:00	76	-	-	-	-	-	-	-
3	11 Dec 2020 12:00	104	-	-	-	-	-	-	-
4	11 Dec 2020 18:00	97	-	-	-	-	-	-	-
5	12 Dec 2020 00:00	173	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

No exposed population (greater than 50mm) based on the bulletin of 12 Dec 2020 00:00 UTC

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
1	11 Dec 2020 00:00	18	-	-	-	-	-	-	-
2	11 Dec 2020 06:00	21	-	-	-	-	-	-	-
3	11 Dec 2020 12:00	29	-	-	-	-	-	-	-
4	11 Dec 2020 18:00	27	-	-	-	-	-	-	-
5	12 Dec 2020 00:00	1604	-	-	-	-	-	-	-

Impact estimation for the next 72h

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StormSurge

0.3 m

The maximum Storm surge height is 0.3m in Lao, Fiji. This height is estimated for 12 Dec 2020 06:00 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 06:00	Lao	Fiji	0.3
	12 Dec 2020 06:00	Nailou	Fiji	0.3
	12 Dec 2020 06:00	Nawi	Fiji	0.3
	12 Dec 2020 06:00	Vunikura	Fiji	0.3
	12 Dec 2020 06:00	Napuka	Fiji	0.3
	12 Dec 2020 00:45	Moneo	New Caledonia	0.3
	12 Dec 2020 00:45	Ho	New Caledonia	0.3
	12 Dec 2020 00:45	Meomo	New Caledonia	0.3
	12 Dec 2020 00:45	Houailou	New Caledonia	0.3
	12 Dec 2020 00:45	Ouakaya	New Caledonia	0.3
	12 Dec 2020 00:45	Poro	New Caledonia	0.3
	12 Dec 2020 05:15	Ouanache	New Caledonia	0.2
	12 Dec 2020 05:15	Paola	New Caledonia	0.2
	12 Dec 2020 05:15	Vieux Tuho	New Caledonia	0.2
	12 Dec 2020 05:15	Touho	New Caledonia	0.2
	12 Dec 2020 05:15	Kokengone	New Caledonia	0.2
	12 Dec 2020 00:45	Lautoka	Fiji	0.2
	12 Dec 2020 00:45	Nailanga	Fiji	0.2
	12 Dec 2020 00:45	Sorokoba	Fiji	0.2
	12 Dec 2020 00:45	Ba	Fiji	0.2
	12 Dec 2020 00:45	Natunuka	Fiji	0.2
	12 Dec 2020 00:45	Tavua	Fiji	0.2
	12 Dec 2020 00:45	Rabulu	Fiji	0.2
	12 Dec 2020 00:45	Togowere	Fiji	0.2
	12 Dec 2020 00:15	Koroinasolo	Fiji	0.2
	12 Dec 2020 00:15	Savu Sau	Fiji	0.2
	12 Dec 2020 00:15	Navinggiri	Fiji	0.2
	12 Dec 2020 00:15	Yangganga	Fiji	0.2
	12 Dec 2020 00:15	Nawailevu	Fiji	0.2
	12 Dec 2020 00:00	Vangai	Fiji	0.2
	12 Dec 2020 05:30	Pek	Vanuatu	0.2
	12 Dec 2020 05:30	Crepeta	Vanuatu	0.2
	12 Dec 2020 05:30	Ngusui	Vanuatu	0.2
	12 Dec 2020 00:45	Kouaoua	New Caledonia	0.2
	12 Dec 2020 01:00	Soso	Fiji	0.1
	12 Dec 2020 01:00	Somosomo	Fiji	0.1
	12 Dec 2020 03:45	Naindi	Fiji	0.1
	12 Dec 2020 03:45	Korosi	Fiji	0.1
	12 Dec 2020 03:45	Korotasere	Fiji	0.1
	12 Dec 2020 03:45	Naweni	Fiji	0.1
	12 Dec 2020 03:45	Nakarambo	Fiji	0.1
	12 Dec 2020 03:45	Viani	Fiji	0.1
	12 Dec 2020 00:30	Kasavu	Fiji	0.1
	12 Dec 2020 00:30	Nausori	Fiji	0.1
	12 Dec 2020 00:30	Korovou	Fiji	0.1
	12 Dec 2020 00:30	Lokia	Fiji	0.1
	12 Dec 2020 00:30	Naimasimasi	Fiji	0.1
	12 Dec 2020 00:30	Ucunivanua	Fiji	0.1
	12 Dec 2020 00:30	Cautata	Fiji	0.1
	12 Dec 2020 00:30	Nasilai	Fiji	0.1
	12 Dec 2020 00:30	Dromuna	Fiji	0.1
	12 Dec 2020 01:15	Loanatom	Vanuatu	0.1
	12 Dec 2020 01:15	Loounemeloupang	Vanuatu	0.1
	12 Dec 2020 01:15	Loounimhapeun	Vanuatu	0.1
	12 Dec 2020 01:15	Laounalang	Vanuatu	0.1
	12 Dec 2020 01:15	Lowkahmal	Vanuatu	0.1
	12 Dec 2020 01:15	Lownepina	Vanuatu	0.1
	12 Dec 2020 01:15	Imwareupo	Vanuatu	0.1
	12 Dec 2020 01:15	Waisisi	Vanuatu	0.1
	12 Dec 2020 04:30	Namaka	Fiji	0.1
	12 Dec 2020 04:30	Narano	Solomon Islands	0.1
	12 Dec 2020 04:30	Napurongo	Solomon Islands	0.1
	12 Dec 2020 04:30	Naganea	Solomon Islands	0.1
	12 Dec 2020 04:30	Nakuhu	Solomon Islands	0.1
	12 Dec 2020 04:30	Naparaohau	Solomon Islands	0.1
	12 Dec 2020 04:30	Naana	Solomon Islands	0.1
	12 Dec 2020 04:30	Mwaniwowo	Solomon Islands	0.1
	12 Dec 2020 04:30	Mwarairaru	Solomon Islands	0.1
	12 Dec 2020 04:30	Maniborkosi	Solomon Islands	0.1
	12 Dec 2020 04:30	Nasuragena	Solomon Islands	0.1
	12 Dec 2020 04:30	Funakumwa	Solomon Islands	0.1
	12 Dec 2020 04:30	Tawarogha	Solomon Islands	0.1
	12 Dec 2020 04:30	Geta	Solomon Islands	0.1
	12 Dec 2020 04:30	Star Harb	Solomon Islands	0.1
	12 Dec 2020 04:30	Mami	Solomon Islands	0.1
	12 Dec 2020 04:30	Fageifa	Solomon Islands	0.1
	12 Dec 2020 04:30	Ragapu	Solomon Islands	0.1
	12 Dec 2020 04:30	Ghupuna	Solomon Islands	0.1
	12 Dec 2020 03:00	Ndrekeniwai	Fiji	0.1
	12 Dec 2020 03:00	Mbangasau	Fiji	0.1
	12 Dec 2020 00:00	Lodoni	Fiji	0.1
	12 Dec 2020 00:00	Lawaki	Fiji	0.1
	12 Dec 2020 00:00	Naingani	Fiji	0.1
	12 Dec 2020 00:00	Navuti	Fiji	0.1
	12 Dec 2020 00:00	Nasaga	Fiji	0.1
	12 Dec 2020 00:00	Rukuruku	Fiji	0.1
	12 Dec 2020 00:00	Lovoni	Fiji	0.1
	12 Dec 2020 00:45	Nalauwaki	Fiji	0.1
	12 Dec 2020 01:00	Matayalevu	Fiji	0.1
	12 Dec 2020 00:30	Matacawalevu	Fiji	0.1
	12 Dec 2020 00:30	Sisili	Fiji	0.1
	12 Dec 2020 00:45	Solevu	Fiji	0.1
	12 Dec 2020 04:00	Takataka	Solomon Islands	0.1
	12 Dec 2020 01:00	Rakiraki	Fiji	0.1
	12 Dec 2020 01:00	Vaileka	Fiji	0.1
	12 Dec 2020 01:00	Nanukuloa	Fiji	0.1
	12 Dec 2020 00:00	Nauouo	Fiji	0.1
	12 Dec 2020 00:00	Levuka	Fiji	0.1
	12 Dec 2020 06:00	Ponkovia	Vanuatu	0.1
	12 Dec 2020 06:00	Lamarou	Vanuatu	0.1
	12 Dec 2020 06:00	Lamen	Vanuatu	0.1
	12 Dec 2020 06:00	Paia	Vanuatu	0.1
	12 Dec 2020 06:00	Vaoleli	Vanuatu	0.1
	12 Dec 2020 06:00	Tafouale	Vanuatu	0.1
	12 Dec 2020 06:00	Liro	Vanuatu	0.1
	12 Dec 2020 06:00	Nikaura	Vanuatu	0.1
	12 Dec 2020 06:00	Tavio	Vanuatu	0.1
	12 Dec 2020 06:00	Ignal	Vanuatu	0.1
	12 Dec 2020 06:00	Lulep Nesa	Vanuatu	0.1
	12 Dec 2020 06:00	Mate	Vanuatu	0.1
	12 Dec 2020 06:00	Halos	Vanuatu	0.1
	12 Dec 2020 01:00	Tavua	Fiji	0.1
	12 Dec 2020 03:30	Namboutini	Fiji	0.1
	12 Dec 2020 01:00	Nasau	Fiji	0.1
	12 Dec 2020 06:00	Pawe	Vanuatu	0.1
	12 Dec 2020 06:00	Toak	Vanuatu	0.1
	12 Dec 2020 00:45	Nacula	Fiji	0.1
	12 Dec 2020 00:45	Navotua	Fiji	0.1
	12 Dec 2020 00:45	Tamusua	Fiji	0.1
	12 Dec 2020 06:00	Tiabet	New Caledonia	0.1
	12 Dec 2020 06:00	Poum	New Caledonia	0.1
	12 Dec 2020 06:00	Poum-Plage	New Caledonia	0.1
	12 Dec 2020 06:00	Arama	New Caledonia	0.1
	12 Dec 2020 06:00	Pam	New Caledonia	0.1
	12 Dec 2020 00:45	Teci	Fiji	0.1
	12 Dec 2020 05:15	Abnetare	Vanuatu	0.1
	12 Dec 2020 05:15	Segond	Vanuatu	0.1
	12 Dec 2020 05:15	Luganville	Vanuatu	0.1
	12 Dec 2020 05:15	Saraotou	Vanuatu	0.1
	12 Dec 2020 05:15	Palikoulo	Vanuatu	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.