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

Meteorological source	GFS
Exposed countries	Tonga
Exposed population	No people in Category 1 or higher
Maximum wind speed	94 km/h
Maximum storm surge	0.4 m (14 Dec 04:15 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	94 km/h	0.4 m	170 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 1 thousand can be affected by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

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

Category	Country	Population
Tropical Storm	Tonga	1,011

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	176	-		-	-	-	-	-	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 00:00 UTC

Level	Country	Population
100-250 mm	Wallis and Futuna, Fiji	26,591	+
	Fiji	11,030
	Wallis and Futuna	15,561
50-100 mm	Tuvalu, Solomon Islands, Fiji, Vanuatu, Tonga	728,397	+
	Tuvalu	2,936
	Solomon Islands	1,360
	Fiji	708,800
	Vanuatu	15,036
	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	1143	30 thousand			-	-	-	-	Tuvalu, Solomon Islands, Fiji, Wallis and Futuna, Vanuatu, 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 04:15 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 14 Dec 2020 00:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	14 Dec 2020 04:15	Nailanga	Fiji	0.4
	14 Dec 2020 04:15	Sorokoba	Fiji	0.4
	14 Dec 2020 04:15	Ba	Fiji	0.4
	14 Dec 2020 04:15	Natunuka	Fiji	0.4
	14 Dec 2020 04:15	Tavua	Fiji	0.4
	14 Dec 2020 01:00	Naindi	Fiji	0.3
	14 Dec 2020 01:00	Korosi	Fiji	0.3
	14 Dec 2020 01:00	Korotasere	Fiji	0.3
	14 Dec 2020 01:00	Naweni	Fiji	0.3
	14 Dec 2020 01:00	Nakarambo	Fiji	0.3
	14 Dec 2020 01:00	Viani	Fiji	0.3
	14 Dec 2020 01:00	Ndrekeniwai	Fiji	0.3
	14 Dec 2020 04:00	Lautoka	Fiji	0.3
	14 Dec 2020 04:30	Nadi	Fiji	0.3
	14 Dec 2020 04:30	Namaka	Fiji	0.3
	14 Dec 2020 04:45	Solevu	Fiji	0.3
	14 Dec 2020 04:45	Momi	Fiji	0.3
	14 Dec 2020 04:45	Tavua	Fiji	0.3
	14 Dec 2020 01:00	Mbangasau	Fiji	0.2
	14 Dec 2020 03:45	Koroinasolo	Fiji	0.2
	14 Dec 2020 03:45	Navinggiri	Fiji	0.2
	14 Dec 2020 03:45	Ndalomo	Fiji	0.2
	14 Dec 2020 03:45	Naruwai	Fiji	0.2
	14 Dec 2020 03:45	Nawailevu	Fiji	0.2
	14 Dec 2020 02:30	Lambulmbatuei	Vanuatu	0.2
	14 Dec 2020 02:30	Meriver	Vanuatu	0.2
	14 Dec 2020 02:30	Bourbar	Vanuatu	0.2
	14 Dec 2020 02:30	Lamap	Vanuatu	0.2
	14 Dec 2020 02:30	Peskarus	Vanuatu	0.2
	14 Dec 2020 03:30	Nasarowangga	Fiji	0.2
	14 Dec 2020 03:30	Navindamu	Fiji	0.2
	14 Dec 2020 04:30	Nalauwaki	Fiji	0.2
	14 Dec 2020 03:00	Yangganga	Fiji	0.2
	14 Dec 2020 03:15	Savu Sau	Fiji	0.2
	14 Dec 2020 01:00	Malake	Fiji	0.2
	14 Dec 2020 04:15	Soso	Fiji	0.2
	14 Dec 2020 01:30	Biagunu	Fiji	0.2
	14 Dec 2020 01:30	Lao	Fiji	0.2
	14 Dec 2020 01:30	Nailou	Fiji	0.2
	14 Dec 2020 01:30	Nawi	Fiji	0.2
	14 Dec 2020 01:30	Namboutini	Fiji	0.2
	14 Dec 2020 01:30	Napuka	Fiji	0.2
	14 Dec 2020 03:45	Rabulu	Fiji	0.2
	14 Dec 2020 04:15	Somosomo	Fiji	0.2
	14 Dec 2020 04:00	Matayalevu	Fiji	0.2
	14 Dec 2020 04:00	Matacawalevu	Fiji	0.2
	14 Dec 2020 04:00	Sisili	Fiji	0.2
	14 Dec 2020 04:00	Nacula	Fiji	0.2
	14 Dec 2020 04:00	Navotua	Fiji	0.2
	14 Dec 2020 04:00	Tamusua	Fiji	0.2
	14 Dec 2020 03:45	Nabouwalu	Fiji	0.2
	14 Dec 2020 01:45	Vunikura	Fiji	0.2
	14 Dec 2020 03:45	Rakiraki	Fiji	0.2
	14 Dec 2020 03:45	Vaileka	Fiji	0.2
	14 Dec 2020 03:45	Nanukuloa	Fiji	0.2
	14 Dec 2020 03:45	Nasau	Fiji	0.2
	14 Dec 2020 04:30	Korovou	Fiji	0.1
	14 Dec 2020 04:30	Lodoni	Fiji	0.1
	14 Dec 2020 04:30	Naimasimasi	Fiji	0.1
	14 Dec 2020 04:30	Lawaki	Fiji	0.1
	14 Dec 2020 04:30	Ucunivanua	Fiji	0.1
	14 Dec 2020 04:30	Navuti	Fiji	0.1
	14 Dec 2020 02:45	Nagumu	Fiji	0.1
	14 Dec 2020 02:45	Nanduri	Fiji	0.1
	14 Dec 2020 03:30	Vangai	Fiji	0.1
	14 Dec 2020 03:45	Togowere	Fiji	0.1
	14 Dec 2020 00:15	Ndenimanu	Fiji	0.1
	14 Dec 2020 02:15	Vunivatu	Fiji	0.1
	14 Dec 2020 02:15	Navukembuli	Fiji	0.1
	14 Dec 2020 02:15	Naua	Fiji	0.1
	14 Dec 2020 02:15	Namukalau	Fiji	0.1
	14 Dec 2020 01:30	Tawake	Fiji	0.1
	14 Dec 2020 01:30	Nukusa	Fiji	0.1
	14 Dec 2020 04:00	Nayavutoka	Fiji	0.1
	14 Dec 2020 04:15	Naingani	Fiji	0.1
	14 Dec 2020 00:15	Vatutandova	Fiji	0.1
	14 Dec 2020 04:00	Teci	Fiji	0.1
	14 Dec 2020 03:45	Thavanga	Fiji	0.1
	14 Dec 2020 04:15	Nasaga	Fiji	0.1
	14 Dec 2020 04:15	Rukuruku	Fiji	0.1
	14 Dec 2020 04:15	Lovoni	Fiji	0.1
	14 Dec 2020 04:15	Nauouo	Fiji	0.1
	14 Dec 2020 04:15	Levuka	Fiji	0.1
	14 Dec 2020 03:45	Ndaria	Fiji	0.1
	14 Dec 2020 03:45	Rave-rave	Fiji	0.1
	14 Dec 2020 03:45	Ndawara	Fiji	0.1
	14 Dec 2020 05:30	Paola	New Caledonia	0.1
	14 Dec 2020 05:30	Vieux Tuho	New Caledonia	0.1
	14 Dec 2020 05:30	Touho	New Caledonia	0.1
	14 Dec 2020 05:30	Kokengone	New Caledonia	0.1
	14 Dec 2020 05:30	Saint-Denis	New Caledonia	0.1
	14 Dec 2020 04:45	Kasavu	Fiji	0.1
	14 Dec 2020 00:15	Nasea	Fiji	0.1
	14 Dec 2020 00:30	Mbukama	Fiji	0.1
	14 Dec 2020 03:30	Waisa	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.