Overall Red Tropical Cyclone alert for YASA-20 in Fiji, from 12 Dec 2020 12:00 UTC to 20 Dec 2020 00:00 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 Red alert Tropical Cyclone for YASA-20

in Fiji,

14 Dec 2020 18 UTC

click on

to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone YASA-20 can have a high humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GFS
Exposed countries	Fiji, Tonga
Exposed population	140 thousand in Category 1 or higher
Maximum wind speed	122 km/h
Maximum storm surge	0.4 m (14 Dec 23:30 UTC)
Vulnerability	Medium (Fiji)

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	122 km/h	0.4 m	138 mm	0.5
GFS Overall	281 km/h	1.3 m	829 mm	2.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

281 km/h

Up to 140 thousand in Category 1 strength or higher (see SSHS)

Wind exposed population - AoIs

Estimations based on the bulletin of 14 Dec 2020 18:00 UTC

Category	Country	Population
CAT. 2	Fiji	7,180
CAT. 1	Fiji	130,551
Tropical Storm	Fiji, Tonga	195,591	+
	Fiji	194,610
	Tonga	981

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	12 Dec 2020 12:00	101	-	-	-	-	-	-	-
2	12 Dec 2020 18:00	83	-	-	-	-	-	-	-
3	13 Dec 2020 00:00	68	-	-	-	-	-	-	-
4	13 Dec 2020 06:00	68	-	-	-	-	-	-	-
5	13 Dec 2020 12:00	94	-	-	-	-	-	-	-
6	13 Dec 2020 18:00	101	-	-	-	-	-	-	-
7	14 Dec 2020 00:00	94	-	-	-	-	-	-	-
8	14 Dec 2020 06:00	108	-	-	-	-	-	-	-
9	14 Dec 2020 12:00	119	-		-	-	-	-	-	Tonga
10	14 Dec 2020 18:00	194	140 thousand				-	-	-	Fiji, Tonga

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 14 Dec 2020 18:00 UTC

Level	Country	Population
250-500 mm	Fiji	544
100-250 mm	Wallis and Futuna, Fiji	795,289	+
	Fiji	795,058
	Wallis and Futuna	231
50-100 mm	Solomon Islands, Fiji, Wallis and Futuna, Tonga	121,872	+
	Solomon Islands	987
	Fiji	105,290
	Wallis and Futuna	15,330
	Tonga	265

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	12 Dec 2020 12:00	229	-	-	-	-	-	-	-
2	12 Dec 2020 18:00	268	-	-	-	-	-	-	-
3	13 Dec 2020 00:00	132	-	-	-	-	-	-	-
4	13 Dec 2020 06:00	43	-	-	-	-	-	-	-
5	13 Dec 2020 12:00	163	-	-	-	-	-	-	-
6	13 Dec 2020 18:00	181	-	-	-	-	-	-	-
7	14 Dec 2020 00:00	170	-	-	-	-	-	-	-
8	14 Dec 2020 06:00	121	-	-	-	-	-	-	-
9	14 Dec 2020 12:00	136	-	-	-	-	-	-	-
10	14 Dec 2020 18:00	977	800 thousand				-	-	-	Solomon Islands, Fiji, Wallis and Futuna, Tonga

Impact estimation for the next 72h

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StormSurge

0.4 m

The maximum Storm surge height is 0.4m in Nailanga, Fiji. This height is estimated for 14 Dec 2020 23:30 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 14 Dec 2020 18:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	14 Dec 2020 23:30	Nailanga	Fiji	0.4
	14 Dec 2020 23:30	Sorokoba	Fiji	0.4
	14 Dec 2020 23:30	Ba	Fiji	0.4
	14 Dec 2020 23:30	Natunuka	Fiji	0.4
	14 Dec 2020 23:30	Tavua	Fiji	0.4
	14 Dec 2020 20:15	Naindi	Fiji	0.4
	14 Dec 2020 20:15	Korosi	Fiji	0.4
	14 Dec 2020 20:15	Korotasere	Fiji	0.4
	14 Dec 2020 20:15	Naweni	Fiji	0.4
	14 Dec 2020 20:15	Nakarambo	Fiji	0.4
	14 Dec 2020 20:15	Viani	Fiji	0.4
	14 Dec 2020 20:15	Ndrekeniwai	Fiji	0.4
	14 Dec 2020 23:15	Lautoka	Fiji	0.3
	14 Dec 2020 23:45	Nadi	Fiji	0.3
	14 Dec 2020 23:45	Namaka	Fiji	0.3
	14 Dec 2020 23:45	Momi	Fiji	0.3
	14 Dec 2020 23:45	Solevu	Fiji	0.3
	14 Dec 2020 19:45	Malake	Fiji	0.3
	14 Dec 2020 19:45	Mbangasau	Fiji	0.3
	14 Dec 2020 19:45	Biagunu	Fiji	0.3
	14 Dec 2020 19:45	Lao	Fiji	0.3
	14 Dec 2020 23:30	Tavua	Fiji	0.3
	14 Dec 2020 19:45	Nailou	Fiji	0.3
	14 Dec 2020 19:45	Nawi	Fiji	0.3
	14 Dec 2020 23:00	Koroinasolo	Fiji	0.2
	14 Dec 2020 23:00	Navinggiri	Fiji	0.2
	14 Dec 2020 23:00	Ndalomo	Fiji	0.2
	14 Dec 2020 23:00	Naruwai	Fiji	0.2
	14 Dec 2020 23:00	Nawailevu	Fiji	0.2
	14 Dec 2020 23:30	Namboutini	Fiji	0.2
	14 Dec 2020 23:30	Napuka	Fiji	0.2
	14 Dec 2020 23:15	Nalauwaki	Fiji	0.2
	14 Dec 2020 23:15	Soso	Fiji	0.2
	14 Dec 2020 20:00	Nanduri	Fiji	0.2
	14 Dec 2020 20:00	Vatutandova	Fiji	0.2
	14 Dec 2020 23:30	Rabulu	Fiji	0.2
	14 Dec 2020 23:00	Yangganga	Fiji	0.2
	14 Dec 2020 23:00	Nasarowangga	Fiji	0.2
	14 Dec 2020 23:00	Somosomo	Fiji	0.2
	14 Dec 2020 18:00	Lambulmbatuei	Vanuatu	0.2
	14 Dec 2020 18:00	Meriver	Vanuatu	0.2
	14 Dec 2020 18:00	Bourbar	Vanuatu	0.2
	14 Dec 2020 18:00	Lamap	Vanuatu	0.2
	14 Dec 2020 18:00	Peskarus	Vanuatu	0.2
	14 Dec 2020 22:45	Savu Sau	Fiji	0.2
	14 Dec 2020 23:15	Matayalevu	Fiji	0.2
	14 Dec 2020 23:15	Matacawalevu	Fiji	0.2
	14 Dec 2020 23:15	Sisili	Fiji	0.2
	14 Dec 2020 19:15	Nayavutoka	Fiji	0.2
	14 Dec 2020 19:15	Lawaki	Fiji	0.2
	14 Dec 2020 19:15	Naingani	Fiji	0.2
	14 Dec 2020 23:45	Vunivatu	Fiji	0.2
	14 Dec 2020 23:45	Navukembuli	Fiji	0.2
	14 Dec 2020 23:45	Naua	Fiji	0.2
	14 Dec 2020 23:45	Namukalau	Fiji	0.2
	14 Dec 2020 18:15	Navindamu	Fiji	0.2
	14 Dec 2020 18:15	Nagumu	Fiji	0.2
	14 Dec 2020 19:15	Korovou	Fiji	0.2
	14 Dec 2020 19:15	Lodoni	Fiji	0.2
	14 Dec 2020 19:15	Navuti	Fiji	0.2
	14 Dec 2020 23:00	Togowere	Fiji	0.2
	15 Dec 2020 00:00	Vangai	Fiji	0.2
	15 Dec 2020 00:00	Vunikura	Fiji	0.2
	14 Dec 2020 23:45	Tawake	Fiji	0.2
	14 Dec 2020 23:45	Nukusa	Fiji	0.2
	14 Dec 2020 23:00	Rakiraki	Fiji	0.2
	14 Dec 2020 23:00	Vaileka	Fiji	0.2
	14 Dec 2020 23:00	Nanukuloa	Fiji	0.2
	14 Dec 2020 23:00	Nasau	Fiji	0.2
	14 Dec 2020 23:15	Nacula	Fiji	0.2
	14 Dec 2020 19:15	Ndenimanu	Fiji	0.2
	14 Dec 2020 19:00	Naimasimasi	Fiji	0.2
	14 Dec 2020 19:00	Ucunivanua	Fiji	0.2
	14 Dec 2020 19:15	Nasaga	Fiji	0.2
	14 Dec 2020 19:15	Rukuruku	Fiji	0.2
	14 Dec 2020 19:15	Lovoni	Fiji	0.2
	14 Dec 2020 19:15	Nauouo	Fiji	0.2
	14 Dec 2020 23:45	Nambouono	Fiji	0.2
	14 Dec 2020 19:30	Kasavu	Fiji	0.2
	14 Dec 2020 19:00	Waisa	Fiji	0.2
	14 Dec 2020 19:00	Natua	Fiji	0.2
	14 Dec 2020 19:00	Mbangata	Fiji	0.2
	14 Dec 2020 19:00	Savusavu	Fiji	0.2
	14 Dec 2020 19:00	Nabouwalu	Fiji	0.2
	14 Dec 2020 19:00	Thavanga	Fiji	0.2
	14 Dec 2020 19:00	Ndaria	Fiji	0.2
	14 Dec 2020 19:00	Rave-rave	Fiji	0.2
	14 Dec 2020 19:00	Ndawara	Fiji	0.2
	14 Dec 2020 19:15	Levuka	Fiji	0.1
	14 Dec 2020 23:30	Navotua	Fiji	0.1
	14 Dec 2020 23:30	Tamusua	Fiji	0.1
	14 Dec 2020 23:45	Teci	Fiji	0.1
	14 Dec 2020 18:00	Abnetare	Vanuatu	0.1
	14 Dec 2020 18:00	Segond	Vanuatu	0.1
	14 Dec 2020 18:00	Asavagas	Vanuatu	0.1
	14 Dec 2020 18:45	Nasea	Fiji	0.1
	14 Dec 2020 23:30	Laucala	Fiji	0.1
	14 Dec 2020 23:30	Nausori	Fiji	0.1
	14 Dec 2020 23:30	Lokia	Fiji	0.1
	14 Dec 2020 23:30	Cautata	Fiji	0.1
	14 Dec 2020 23:30	Nasilai	Fiji	0.1
	14 Dec 2020 23:30	Dromuna	Fiji	0.1
	14 Dec 2020 18:30	Mou	New Caledonia	0.1
	14 Dec 2020 18:30	Moneo	New Caledonia	0.1
	14 Dec 2020 18:30	Ho	New Caledonia	0.1
	14 Dec 2020 18:30	Meomo	New Caledonia	0.1
	14 Dec 2020 23:45	Touho	New Caledonia	0.1
	14 Dec 2020 23:45	Kokengone	New Caledonia	0.1
	14 Dec 2020 23:45	Saint-Denis	New Caledonia	0.1
	14 Dec 2020 23:45	Poindimie	New Caledonia	0.1
	14 Dec 2020 23:45	Ometteux	New Caledonia	0.1
	14 Dec 2020 23:45	Bayes	New Caledonia	0.1
	14 Dec 2020 23:45	Mbukama	Fiji	0.1
	14 Dec 2020 18:30	Ponerihouen	New Caledonia	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.