Overall Green Tropical Cyclone alert for OSAI-24 in Cook Islands from 06 Feb 2024 18:00 UTC to 08 Feb 2024 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 OSAI-24

in Cook Islands

07 Feb 2024 12 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 OSAI-24 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GFS
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	112 km/h
Maximum storm surge	0.5 m (07 Feb 13:15 UTC)
Vulnerability	Medium (Cook Is.)

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	112 km/h	0.5 m	202 mm	0.5
GFS Overall	112 km/h	0.6 m	761 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 07 Feb 2024 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
1	06 Feb 2024 18:00	79	-	-	-	-	-	-	-
2	07 Feb 2024 00:00	79	-	-	-	-	-	-	-
3	07 Feb 2024 06:00	86	-	-	-	-	-	-	-
4	07 Feb 2024 12:00	112	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 07 Feb 2024 12:00 UTC

Level	Country	Population
100-250 mm	American Samoa, French Polynesia, Cook Islands	39,483	+
	Cook Islands	2,421
	American Samoa	11
	French Polynesia	37,051
50-100 mm	Tuvalu, Tokelau, Cook Islands, Fiji, Samoa, American Samoa, Tonga, French Polynesia	163,444	+
	Tuvalu	2,147
	Tokelau	1,250
	Cook Islands	612
	American Samoa	971
	Fiji	1,565
	Samoa	135,532
	Tonga	242
	French Polynesia	21,122

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	06 Feb 2024 18:00	111	-	-	-	-	-	-	-
2	07 Feb 2024 00:00	118	-	-	-	-	-	-	-
3	07 Feb 2024 06:00	181	-	-	-	-	-	-	-
4	07 Feb 2024 12:00	450	40 thousand			-	-	-	-	Tuvalu, Tokelau, Cook Islands, American Samoa, Fiji, Samoa, Tonga, French Polynesia

Impact estimation for the next 72h

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StormSurge

0.5 m

The maximum Storm surge height is 0.5m in Korosi, Fiji. This height is estimated for 07 Feb 2024 13:15 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 07 Feb 2024 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	07 Feb 2024 13:15	Korosi	Fiji	0.5
	07 Feb 2024 13:15	Korotasere	Fiji	0.5
	07 Feb 2024 13:15	Naweni	Fiji	0.5
	07 Feb 2024 13:15	Viani	Fiji	0.5
	07 Feb 2024 13:15	Ndrekeniwai	Fiji	0.5
	07 Feb 2024 13:15	Mbangasau	Fiji	0.5
	07 Feb 2024 13:15	Naindi	Fiji	0.5
	07 Feb 2024 13:15	Nakarambo	Fiji	0.5
	07 Feb 2024 18:00	Malake	Fiji	0.4
	07 Feb 2024 18:00	Biagunu	Fiji	0.4
	07 Feb 2024 18:00	Lao	Fiji	0.3
	07 Feb 2024 18:00	Nailou	Fiji	0.3
	07 Feb 2024 18:00	Nawi	Fiji	0.3
	07 Feb 2024 17:30	Nanduri	Fiji	0.3
	07 Feb 2024 17:30	Vatutandova	Fiji	0.3
	07 Feb 2024 17:30	Nasea	Fiji	0.3
	07 Feb 2024 16:30	Nayavutoka	Fiji	0.3
	07 Feb 2024 16:30	Lodoni	Fiji	0.3
	07 Feb 2024 16:30	Lawaki	Fiji	0.3
	07 Feb 2024 16:30	Naingani	Fiji	0.3
	07 Feb 2024 12:00	Natunuka	Fiji	0.3
	07 Feb 2024 12:00	Tavua	Fiji	0.3
	07 Feb 2024 12:00	Rabulu	Fiji	0.3
	07 Feb 2024 12:00	Togowere	Fiji	0.3
	07 Feb 2024 17:30	Rakiraki	Fiji	0.3
	07 Feb 2024 17:30	Vaileka	Fiji	0.3
	07 Feb 2024 17:30	Nanukuloa	Fiji	0.3
	07 Feb 2024 17:30	Nasau	Fiji	0.3
	07 Feb 2024 16:15	Natua	Fiji	0.3
	07 Feb 2024 16:15	Mbangata	Fiji	0.3
	07 Feb 2024 16:15	Savusavu	Fiji	0.3
	07 Feb 2024 17:45	Koroinasolo	Fiji	0.3
	07 Feb 2024 17:45	Savu Sau	Fiji	0.3
	07 Feb 2024 17:45	Navinggiri	Fiji	0.3
	07 Feb 2024 17:45	Yangganga	Fiji	0.3
	07 Feb 2024 17:45	Nawailevu	Fiji	0.3
	07 Feb 2024 18:00	Lautoka	Fiji	0.2
	07 Feb 2024 18:00	Nailanga	Fiji	0.2
	07 Feb 2024 18:00	Sorokoba	Fiji	0.2
	07 Feb 2024 18:00	Ba	Fiji	0.2
	07 Feb 2024 17:45	Nasarowangga	Fiji	0.2
	07 Feb 2024 12:45	Korovou	Fiji	0.2
	07 Feb 2024 12:45	Ucunivanua	Fiji	0.2
	07 Feb 2024 12:45	Navuti	Fiji	0.2
	07 Feb 2024 12:45	Nasaga	Fiji	0.2
	07 Feb 2024 12:45	Rukuruku	Fiji	0.2
	07 Feb 2024 12:45	Lovoni	Fiji	0.2
	07 Feb 2024 15:45	Vunikura	Fiji	0.2
	07 Feb 2024 15:45	Napuka	Fiji	0.2
	07 Feb 2024 18:00	Ndawara	Fiji	0.2
	07 Feb 2024 18:00	Waisa	Fiji	0.2
	07 Feb 2024 18:00	Nauouo	Fiji	0.2
	07 Feb 2024 18:00	Levuka	Fiji	0.2
	07 Feb 2024 18:00	Galoa	Fiji	0.2
	07 Feb 2024 18:00	Yanutha	Fiji	0.2
	07 Feb 2024 18:00	Matavuralevu	Fiji	0.2
	07 Feb 2024 18:00	Pacific Harbour	Fiji	0.2
	07 Feb 2024 18:00	Waisomo	Fiji	0.2
	07 Feb 2024 18:00	Dakuimbeqa	Fiji	0.2
	07 Feb 2024 18:00	Lalati	Fiji	0.2
	07 Feb 2024 18:00	Navua	Fiji	0.2
	07 Feb 2024 18:00	Naitionitoni	Fiji	0.2
	07 Feb 2024 18:00	Mau	Fiji	0.2
	07 Feb 2024 12:00	Namboutini	Fiji	0.2
	07 Feb 2024 17:15	Nalauwaki	Fiji	0.2
	07 Feb 2024 17:15	Soso	Fiji	0.2
	07 Feb 2024 17:15	Somosomo	Fiji	0.2
	07 Feb 2024 16:45	Nabouwalu	Fiji	0.2
	07 Feb 2024 16:45	Thavanga	Fiji	0.2
	07 Feb 2024 16:45	Ndaria	Fiji	0.2
	07 Feb 2024 16:45	Rave-rave	Fiji	0.2
	07 Feb 2024 18:00	Naimasimasi	Fiji	0.2
	07 Feb 2024 17:15	Navindamu	Fiji	0.2
	07 Feb 2024 17:15	Nagumu	Fiji	0.2
	07 Feb 2024 17:45	Matayalevu	Fiji	0.2
	07 Feb 2024 17:45	Matacawalevu	Fiji	0.2
	07 Feb 2024 17:45	Sisili	Fiji	0.2
	07 Feb 2024 18:00	Ndalomo	Fiji	0.2
	07 Feb 2024 12:00	Tawake	Fiji	0.2
	07 Feb 2024 17:45	Gasele	Fiji	0.2
	07 Feb 2024 17:45	Soso	Fiji	0.2
	07 Feb 2024 17:45	Kavala	Fiji	0.2
	07 Feb 2024 17:45	Kaduvu	Fiji	0.2
	07 Feb 2024 17:45	Nukuvou	Fiji	0.2
	07 Feb 2024 17:45	Nabouwalu	Fiji	0.2
	07 Feb 2024 17:45	Vabea	Fiji	0.2
	07 Feb 2024 15:45	Kasavu	Fiji	0.2
	07 Feb 2024 15:45	Nausori	Fiji	0.2
	07 Feb 2024 15:45	Lokia	Fiji	0.2
	07 Feb 2024 15:45	Cautata	Fiji	0.2
	07 Feb 2024 15:45	Nasilai	Fiji	0.2
	07 Feb 2024 15:45	Dromuna	Fiji	0.2
	07 Feb 2024 12:15	Vangai	Fiji	0.2
	07 Feb 2024 17:30	Ndenimanu	Fiji	0.2
	07 Feb 2024 12:00	Naua	Fiji	0.2
	07 Feb 2024 16:15	Vunisea	Fiji	0.2
	07 Feb 2024 16:15	Mburelevu	Fiji	0.2
	07 Feb 2024 16:15	Mokoisa	Fiji	0.2
	07 Feb 2024 16:15	Naikorokoro	Fiji	0.2
	07 Feb 2024 16:15	Namara	Fiji	0.2
	07 Feb 2024 18:00	Tavua	Fiji	0.2
	07 Feb 2024 12:00	Namukalau	Fiji	0.2
	07 Feb 2024 12:00	Nukusa	Fiji	0.2
	07 Feb 2024 17:45	Vunivatu	Fiji	0.2
	07 Feb 2024 17:30	Solevu	Fiji	0.2
	07 Feb 2024 18:00	Makongai	Fiji	0.2
	07 Feb 2024 17:45	Nasau	Fiji	0.2
	07 Feb 2024 17:45	Talaulia	Fiji	0.2
	07 Feb 2024 17:45	Nalotu	Fiji	0.2
	07 Feb 2024 17:00	Nacula	Fiji	0.2
	07 Feb 2024 17:00	Navotua	Fiji	0.2
	07 Feb 2024 17:00	Tamusua	Fiji	0.2
	07 Feb 2024 17:00	Teci	Fiji	0.2
	07 Feb 2024 17:00	Mbukama	Fiji	0.2
	07 Feb 2024 17:00	Yasawairara	Fiji	0.2
	07 Feb 2024 17:45	Nadi	Fiji	0.2
	07 Feb 2024 17:45	Namaka	Fiji	0.2
	07 Feb 2024 17:30	Naruwai	Fiji	0.2
	07 Feb 2024 12:00	Nambouono	Fiji	0.1
	07 Feb 2024 18:00	Nathamaki	Fiji	0.1
	07 Feb 2024 18:00	Nasau	Fiji	0.1
	07 Feb 2024 17:30	Momi	Fiji	0.1
	07 Feb 2024 18:00	Navukembuli	Fiji	0.1
	07 Feb 2024 18:00	Korovou	Fiji	0.1
	07 Feb 2024 17:00	Korovisilou	Fiji	0.1
	07 Feb 2024 18:00	Nakondu	Fiji	0.1
	07 Feb 2024 17:45	Sawaieke	Fiji	0.1
	07 Feb 2024 17:45	Vione	Fiji	0.1
	07 Feb 2024 17:45	Vandravandra	Fiji	0.1
	07 Feb 2024 18:00	Dalice	Fiji	0.1
	07 Feb 2024 18:00	Navakawau	Fiji	0.1
	07 Feb 2024 18:00	Keteira	Fiji	0.1
	07 Feb 2024 17:30	Kalokolevu	Fiji	0.1
	07 Feb 2024 18:00	Elsee	Fiji	0.1
	07 Feb 2024 18:00	Sumi	Fiji	0.1
	07 Feb 2024 17:00	Lomawal	Fiji	0.1
	07 Feb 2024 17:00	Mbatiri	Fiji	0.1
	07 Feb 2024 17:30	Suva	Fiji	0.1
	07 Feb 2024 17:30	Tamavua	Fiji	0.1
	07 Feb 2024 17:30	Lauthala Bay	Fiji	0.1
	07 Feb 2024 17:00	Korolevu	Fiji	0.1
	07 Feb 2024 17:30	Laucala	Fiji	0.1
	07 Feb 2024 17:00	Bouwanga	Fiji	0.1
	07 Feb 2024 17:00	Taunovo	Fiji	0.1
	07 Feb 2024 17:00	Vatukarasa	Fiji	0.1
	07 Feb 2024 17:15	Cuvu	Fiji	0.1
	07 Feb 2024 17:15	Sigatoka	Fiji	0.1
	07 Feb 2024 17:15	Laselase	Fiji	0.1
	07 Feb 2024 17:30	Andako	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.