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

06 Feb 2024 18 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	79 km/h
Maximum storm surge	0.6 m (08 Feb 04:15 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	79 km/h	0.6 m	111 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

Estimations based on the bulletin of 06 Feb 2024 18:00 UTC

Category	Country	Population
Tropical Storm	American Samoa	00	+

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

Alert	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	06 Feb 2024 18:00	79	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 06 Feb 2024 18:00 UTC

Level	Country	Population
100-250 mm	American Samoa	12
50-100 mm	Tuvalu, Tokelau, Cook Islands, Samoa, American Samoa, Fiji, French Polynesia	199,292	+
	Tuvalu	8,535
	Tokelau	1,250
	Cook Islands	3,033
	American Samoa	1,676
	Samoa	148,069
	Fiji	31,483
	French Polynesia	5,243

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

Alert	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	478	Few people			-	-	-	-	Tuvalu, Tokelau, Cook Islands, American Samoa, Samoa, Fiji, French Polynesia

Impact estimation for the next 72h

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StormSurge

0.6 m

The maximum Storm surge height is 0.6m in Korosi, Fiji. This height is estimated for 08 Feb 2024 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 06 Feb 2024 18:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	08 Feb 2024 04:15	Korosi	Fiji	0.6
	08 Feb 2024 04:15	Korotasere	Fiji	0.6
	08 Feb 2024 04:15	Naweni	Fiji	0.6
	08 Feb 2024 04:15	Viani	Fiji	0.6
	08 Feb 2024 04:15	Ndrekeniwai	Fiji	0.6
	08 Feb 2024 04:15	Mbangasau	Fiji	0.6
	08 Feb 2024 04:15	Naindi	Fiji	0.6
	08 Feb 2024 04:15	Nakarambo	Fiji	0.6
	08 Feb 2024 12:00	Lautoka	Fiji	0.5
	08 Feb 2024 12:00	Nailanga	Fiji	0.5
	08 Feb 2024 12:00	Sorokoba	Fiji	0.5
	08 Feb 2024 12:00	Ba	Fiji	0.5
	07 Feb 2024 21:00	Lao	Fiji	0.5
	07 Feb 2024 21:00	Nailou	Fiji	0.5
	07 Feb 2024 21:00	Nawi	Fiji	0.5
	07 Feb 2024 21:00	Vunikura	Fiji	0.5
	07 Feb 2024 21:00	Napuka	Fiji	0.5
	07 Feb 2024 11:15	Natua	Fiji	0.5
	07 Feb 2024 11:15	Mbangata	Fiji	0.5
	07 Feb 2024 11:15	Savusavu	Fiji	0.5
	09 Feb 2024 14:45	Malake	Fiji	0.4
	09 Feb 2024 14:45	Biagunu	Fiji	0.4
	07 Feb 2024 03:00	Korovou	Fiji	0.4
	07 Feb 2024 03:00	Lodoni	Fiji	0.4
	07 Feb 2024 03:00	Lawaki	Fiji	0.4
	07 Feb 2024 03:00	Ucunivanua	Fiji	0.4
	07 Feb 2024 03:00	Naingani	Fiji	0.4
	07 Feb 2024 03:00	Navuti	Fiji	0.4
	07 Feb 2024 03:00	Nasaga	Fiji	0.4
	07 Feb 2024 03:00	Rukuruku	Fiji	0.4
	07 Feb 2024 03:00	Lovoni	Fiji	0.4
	08 Feb 2024 12:00	Natunuka	Fiji	0.4
	08 Feb 2024 12:00	Tavua	Fiji	0.4
	08 Feb 2024 03:15	Rabulu	Fiji	0.4
	08 Feb 2024 03:15	Togowere	Fiji	0.4
	07 Feb 2024 19:30	Nanduri	Fiji	0.4
	07 Feb 2024 19:30	Vatutandova	Fiji	0.4
	07 Feb 2024 19:30	Nasea	Fiji	0.4
	08 Feb 2024 20:30	Koroinasolo	Fiji	0.3
	08 Feb 2024 20:30	Savu Sau	Fiji	0.3
	08 Feb 2024 20:30	Navinggiri	Fiji	0.3
	08 Feb 2024 20:30	Yangganga	Fiji	0.3
	08 Feb 2024 20:30	Nawailevu	Fiji	0.3
	07 Feb 2024 08:00	Namboutini	Fiji	0.3
	07 Feb 2024 03:00	Nauouo	Fiji	0.3
	07 Feb 2024 03:00	Levuka	Fiji	0.3
	07 Feb 2024 06:30	Rakiraki	Fiji	0.3
	07 Feb 2024 06:30	Vaileka	Fiji	0.3
	07 Feb 2024 06:30	Nanukuloa	Fiji	0.3
	07 Feb 2024 06:30	Nasau	Fiji	0.3
	07 Feb 2024 11:30	Ndawara	Fiji	0.3
	07 Feb 2024 11:30	Waisa	Fiji	0.3
	08 Feb 2024 20:30	Nasarowangga	Fiji	0.3
	07 Feb 2024 07:30	Nabouwalu	Fiji	0.3
	07 Feb 2024 07:30	Thavanga	Fiji	0.3
	07 Feb 2024 07:30	Ndaria	Fiji	0.3
	07 Feb 2024 07:30	Rave-rave	Fiji	0.3
	07 Feb 2024 16:30	Nayavutoka	Fiji	0.3
	07 Feb 2024 07:30	Namaka	Fiji	0.3
	08 Feb 2024 16:30	Naimasimasi	Fiji	0.3
	09 Feb 2024 17:45	Gasele	Fiji	0.3
	09 Feb 2024 17:45	Soso	Fiji	0.3
	09 Feb 2024 17:45	Kavala	Fiji	0.3
	09 Feb 2024 17:45	Kaduvu	Fiji	0.3
	09 Feb 2024 17:45	Nukuvou	Fiji	0.3
	09 Feb 2024 17:45	Nabouwalu	Fiji	0.3
	09 Feb 2024 17:45	Vabea	Fiji	0.3
	07 Feb 2024 07:45	Kasavu	Fiji	0.3
	07 Feb 2024 07:45	Nausori	Fiji	0.3
	07 Feb 2024 07:45	Lokia	Fiji	0.3
	07 Feb 2024 07:45	Cautata	Fiji	0.3
	07 Feb 2024 07:45	Nasilai	Fiji	0.3
	07 Feb 2024 07:45	Dromuna	Fiji	0.3
	07 Feb 2024 07:15	Tavua	Fiji	0.3
	07 Feb 2024 07:15	Solevu	Fiji	0.3
	07 Feb 2024 07:15	Nalauwaki	Fiji	0.3
	07 Feb 2024 07:00	Soso	Fiji	0.2
	07 Feb 2024 07:00	Somosomo	Fiji	0.2
	07 Feb 2024 06:45	Matayalevu	Fiji	0.2
	07 Feb 2024 06:45	Matacawalevu	Fiji	0.2
	07 Feb 2024 06:45	Sisili	Fiji	0.2
	07 Feb 2024 08:00	Naua	Fiji	0.2
	07 Feb 2024 08:00	Tawake	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 02:30	Navindamu	Fiji	0.2
	07 Feb 2024 02:30	Nagumu	Fiji	0.2
	09 Feb 2024 13:45	Nakondu	Fiji	0.2
	09 Feb 2024 13:45	Nathamaki	Fiji	0.2
	09 Feb 2024 13:45	Nasau	Fiji	0.2
	07 Feb 2024 07:00	Nadi	Fiji	0.2
	08 Feb 2024 12:00	Ndalomo	Fiji	0.2
	07 Feb 2024 07:45	Namukalau	Fiji	0.2
	07 Feb 2024 07:45	Nukusa	Fiji	0.2
	08 Feb 2024 11:45	Ndenimanu	Fiji	0.2
	07 Feb 2024 18:30	Vunivatu	Fiji	0.2
	07 Feb 2024 05:45	Vangai	Fiji	0.2
	08 Feb 2024 22:15	Nasau	Fiji	0.2
	08 Feb 2024 22:15	Talaulia	Fiji	0.2
	08 Feb 2024 22:15	Nalotu	Fiji	0.2
	08 Feb 2024 22:15	Vunisea	Fiji	0.2
	08 Feb 2024 22:15	Mburelevu	Fiji	0.2
	08 Feb 2024 22:15	Mokoisa	Fiji	0.2
	08 Feb 2024 22:15	Naikorokoro	Fiji	0.2
	08 Feb 2024 22:15	Namara	Fiji	0.2
	07 Feb 2024 19:15	Nacula	Fiji	0.2
	07 Feb 2024 19:15	Navotua	Fiji	0.2
	07 Feb 2024 19:15	Tamusua	Fiji	0.2
	07 Feb 2024 19:15	Teci	Fiji	0.2
	08 Feb 2024 21:30	Mbukama	Fiji	0.2
	08 Feb 2024 21:30	Yasawairara	Fiji	0.2
	07 Feb 2024 06:15	Naruwai	Fiji	0.2
	07 Feb 2024 18:30	Navukembuli	Fiji	0.2
	06 Feb 2024 21:30	Korovou	Fiji	0.2
	07 Feb 2024 07:00	Vione	Fiji	0.2
	07 Feb 2024 07:00	Dalice	Fiji	0.2
	07 Feb 2024 18:00	Makongai	Fiji	0.2
	06 Feb 2024 21:30	Navakawau	Fiji	0.2
	07 Feb 2024 07:45	Nambouono	Fiji	0.2
	07 Feb 2024 07:15	Momi	Fiji	0.2
	07 Feb 2024 07:45	Korovisilou	Fiji	0.2
	06 Feb 2024 21:15	Sawaieke	Fiji	0.2
	06 Feb 2024 21:15	Vandravandra	Fiji	0.1
	07 Feb 2024 11:15	Keteira	Fiji	0.1
	06 Feb 2024 21:15	Kalokolevu	Fiji	0.1
	06 Feb 2024 21:15	Laucala	Fiji	0.1
	06 Feb 2024 21:15	Suva	Fiji	0.1
	06 Feb 2024 21:15	Tamavua	Fiji	0.1
	06 Feb 2024 21:15	Lauthala Bay	Fiji	0.1
	07 Feb 2024 18:45	Lomawal	Fiji	0.1
	07 Feb 2024 19:30	Mbatiri	Fiji	0.1
	07 Feb 2024 07:00	Andako	Fiji	0.1
	07 Feb 2024 09:00	Tonga	Tuvalu	0.1
	09 Feb 2024 06:15	Lakina	Tuvalu	0.1
	07 Feb 2024 19:30	Cuvu	Fiji	0.1
	07 Feb 2024 07:30	Sigatoka	Fiji	0.1
	07 Feb 2024 07:30	Laselase	Fiji	0.1
	07 Feb 2024 07:30	Vatukarasa	Fiji	0.1
	07 Feb 2024 07:30	Korolevu	Fiji	0.1
	09 Feb 2024 06:00	Roreti	Kiribati	0.1
	07 Feb 2024 19:45	Bouwanga	Fiji	0.1
	07 Feb 2024 19:45	Taunovo	Fiji	0.1
	07 Feb 2024 09:00	Elsee	Fiji	0.1
	07 Feb 2024 09:00	Sumi	Fiji	0.1
	07 Feb 2024 09:00	Vaitupu	Tuvalu	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.