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 12 UTC

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

Meteorological source	ECMWF
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	86 km/h
Maximum storm surge	0.6 m (07 Feb 20:15 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
ECMWF Current	86 km/h	0.6 m	310 mm	0.5
ECMWF Overall	72 km/h	0.6 m	1054 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

72 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 12:00 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 00:00	76	-	-	-	-	-	-	-
	2	06 Feb 2024 12:00	90	-	-	-	-	-	-	-

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 12:00 UTC

Level	Country	Population
100-250 mm	Tuvalu, Tokelau, Cook Islands, American Samoa, Fiji	5,834	+
	Tuvalu	4,237
	Tokelau	812
	Cook Islands	612
	American Samoa	11
	Fiji	161
50-100 mm	Tuvalu, Tokelau, Samoa, American Samoa, Fiji, French Polynesia, Cook Islands	593,745	+
	Tuvalu	4,696
	Tokelau	371
	Cook Islands	2,333
	Samoa	8,606
	Fiji	538,768
	French Polynesia	38,969

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 00:00	161	-		-	-	-	-	-	Tokelau
	2	06 Feb 2024 12:00	458	6 thousand			-	-	-	-	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 Naindi, Fiji. This height is estimated for 07 Feb 2024 20:15 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 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	07 Feb 2024 20:15	Naindi	Fiji	0.6
	07 Feb 2024 20:15	Korosi	Fiji	0.6
	07 Feb 2024 20:15	Korotasere	Fiji	0.6
	07 Feb 2024 20:15	Naweni	Fiji	0.6
	07 Feb 2024 20:15	Nakarambo	Fiji	0.6
	07 Feb 2024 20:15	Viani	Fiji	0.6
	09 Feb 2024 12:00	Ndrekeniwai	Fiji	0.6
	09 Feb 2024 12:00	Mbangasau	Fiji	0.6
	09 Feb 2024 07:00	Malake	Fiji	0.5
	09 Feb 2024 07:00	Biagunu	Fiji	0.5
	08 Feb 2024 03:30	Korovou	Fiji	0.5
	08 Feb 2024 03:30	Lodoni	Fiji	0.5
	08 Feb 2024 03:30	Lawaki	Fiji	0.5
	08 Feb 2024 03:30	Naingani	Fiji	0.5
	08 Feb 2024 03:30	Navuti	Fiji	0.5
	08 Feb 2024 03:30	Nasaga	Fiji	0.5
	08 Feb 2024 03:30	Rukuruku	Fiji	0.5
	08 Feb 2024 03:30	Lovoni	Fiji	0.5
	09 Feb 2024 07:00	Lao	Fiji	0.4
	09 Feb 2024 07:00	Nailou	Fiji	0.4
	09 Feb 2024 07:00	Nawi	Fiji	0.4
	08 Feb 2024 03:30	Ucunivanua	Fiji	0.4
	06 Feb 2024 17:00	Lautoka	Fiji	0.4
	06 Feb 2024 17:00	Nailanga	Fiji	0.4
	06 Feb 2024 17:00	Sorokoba	Fiji	0.4
	06 Feb 2024 17:00	Ba	Fiji	0.4
	08 Feb 2024 04:45	Vunikura	Fiji	0.4
	08 Feb 2024 04:45	Napuka	Fiji	0.4
	08 Feb 2024 04:15	Natunuka	Fiji	0.4
	08 Feb 2024 04:15	Tavua	Fiji	0.4
	08 Feb 2024 04:15	Rabulu	Fiji	0.4
	08 Feb 2024 04:15	Togowere	Fiji	0.4
	08 Feb 2024 02:30	Koroinasolo	Fiji	0.4
	08 Feb 2024 02:30	Savu Sau	Fiji	0.4
	08 Feb 2024 02:30	Navinggiri	Fiji	0.4
	08 Feb 2024 02:30	Yangganga	Fiji	0.4
	08 Feb 2024 02:30	Nawailevu	Fiji	0.4
	07 Feb 2024 22:30	Nauouo	Fiji	0.4
	07 Feb 2024 22:30	Levuka	Fiji	0.4
	08 Feb 2024 08:00	Nasarowangga	Fiji	0.3
	09 Feb 2024 05:30	Natua	Fiji	0.3
	09 Feb 2024 05:30	Mbangata	Fiji	0.3
	09 Feb 2024 05:30	Savusavu	Fiji	0.3
	07 Feb 2024 03:15	Kasavu	Fiji	0.3
	07 Feb 2024 03:15	Nausori	Fiji	0.3
	07 Feb 2024 03:15	Lokia	Fiji	0.3
	07 Feb 2024 03:15	Naimasimasi	Fiji	0.3
	07 Feb 2024 03:15	Cautata	Fiji	0.3
	07 Feb 2024 03:15	Nasilai	Fiji	0.3
	07 Feb 2024 03:15	Dromuna	Fiji	0.3
	09 Feb 2024 06:30	Nayavutoka	Fiji	0.3
	08 Feb 2024 08:15	Namaka	Fiji	0.3
	07 Feb 2024 13:45	Nanduri	Fiji	0.3
	07 Feb 2024 13:45	Vatutandova	Fiji	0.3
	07 Feb 2024 13:45	Nasea	Fiji	0.3
	06 Feb 2024 18:00	Nasau	Fiji	0.3
	06 Feb 2024 18:00	Talaulia	Fiji	0.3
	06 Feb 2024 18:00	Nalotu	Fiji	0.3
	06 Feb 2024 18:00	Vunisea	Fiji	0.3
	06 Feb 2024 18:00	Mburelevu	Fiji	0.3
	06 Feb 2024 18:00	Mokoisa	Fiji	0.3
	06 Feb 2024 18:00	Naikorokoro	Fiji	0.3
	06 Feb 2024 18:00	Namara	Fiji	0.3
	07 Feb 2024 05:00	Namboutini	Fiji	0.3
	07 Feb 2024 05:00	Naua	Fiji	0.3
	07 Feb 2024 05:00	Tawake	Fiji	0.3
	08 Feb 2024 07:15	Vunivatu	Fiji	0.3
	08 Feb 2024 07:15	Navukembuli	Fiji	0.3
	08 Feb 2024 07:15	Namukalau	Fiji	0.3
	07 Feb 2024 04:00	Soso	Fiji	0.3
	07 Feb 2024 04:00	Somosomo	Fiji	0.3
	07 Feb 2024 04:00	Matayalevu	Fiji	0.3
	07 Feb 2024 04:00	Matacawalevu	Fiji	0.3
	07 Feb 2024 04:00	Sisili	Fiji	0.3
	08 Feb 2024 09:15	Galoa	Fiji	0.3
	08 Feb 2024 09:15	Yanutha	Fiji	0.3
	08 Feb 2024 09:15	Matavuralevu	Fiji	0.3
	08 Feb 2024 09:15	Pacific Harbour	Fiji	0.3
	08 Feb 2024 09:15	Waisomo	Fiji	0.3
	08 Feb 2024 09:15	Dakuimbeqa	Fiji	0.3
	08 Feb 2024 09:15	Lalati	Fiji	0.3
	08 Feb 2024 09:15	Navua	Fiji	0.3
	08 Feb 2024 09:15	Naitionitoni	Fiji	0.3
	08 Feb 2024 09:15	Mau	Fiji	0.3
	07 Feb 2024 21:30	Gasele	Fiji	0.3
	07 Feb 2024 21:30	Soso	Fiji	0.3
	07 Feb 2024 21:30	Kavala	Fiji	0.3
	07 Feb 2024 21:30	Kaduvu	Fiji	0.3
	07 Feb 2024 21:30	Nukuvou	Fiji	0.3
	07 Feb 2024 21:30	Nabouwalu	Fiji	0.3
	07 Feb 2024 21:30	Vabea	Fiji	0.3
	06 Feb 2024 13:00	Nabouwalu	Fiji	0.2
	06 Feb 2024 13:00	Thavanga	Fiji	0.2
	06 Feb 2024 13:00	Ndaria	Fiji	0.2
	06 Feb 2024 13:00	Rave-rave	Fiji	0.2
	08 Feb 2024 08:00	Nalauwaki	Fiji	0.2
	07 Feb 2024 19:00	Ndawara	Fiji	0.2
	07 Feb 2024 19:00	Waisa	Fiji	0.2
	07 Feb 2024 05:15	Navindamu	Fiji	0.2
	07 Feb 2024 05:15	Nagumu	Fiji	0.2
	07 Feb 2024 09:00	Vangai	Fiji	0.2
	09 Feb 2024 10:15	Nakondu	Fiji	0.2
	09 Feb 2024 10:15	Nathamaki	Fiji	0.2
	09 Feb 2024 10:15	Nasau	Fiji	0.2
	07 Feb 2024 23:00	Ndalomo	Fiji	0.2
	08 Feb 2024 19:45	Solevu	Fiji	0.2
	08 Feb 2024 07:15	Ndenimanu	Fiji	0.2
	07 Feb 2024 05:00	Nukusa	Fiji	0.2
	08 Feb 2024 08:00	Tavua	Fiji	0.2
	06 Feb 2024 18:00	Rakiraki	Fiji	0.2
	06 Feb 2024 18:00	Vaileka	Fiji	0.2
	06 Feb 2024 18:00	Nanukuloa	Fiji	0.2
	08 Feb 2024 19:30	Vione	Fiji	0.2
	08 Feb 2024 19:30	Dalice	Fiji	0.2
	09 Feb 2024 00:30	Nasau	Fiji	0.2
	07 Feb 2024 22:00	Nadi	Fiji	0.2
	07 Feb 2024 22:00	Momi	Fiji	0.2
	09 Feb 2024 09:30	Naruwai	Fiji	0.2
	07 Feb 2024 04:15	Nacula	Fiji	0.2
	07 Feb 2024 04:15	Navotua	Fiji	0.2
	07 Feb 2024 04:15	Tamusua	Fiji	0.2
	07 Feb 2024 04:15	Teci	Fiji	0.2
	07 Feb 2024 04:15	Mbukama	Fiji	0.2
	07 Feb 2024 04:15	Yasawairara	Fiji	0.2
	07 Feb 2024 22:00	Korovisilou	Fiji	0.2
	07 Feb 2024 03:30	Nambouono	Fiji	0.2
	07 Feb 2024 03:15	Korovou	Fiji	0.2
	08 Feb 2024 19:30	Sawaieke	Fiji	0.2
	07 Feb 2024 22:00	Makongai	Fiji	0.2
	07 Feb 2024 03:15	Navakawau	Fiji	0.2
	08 Feb 2024 19:15	Keteira	Fiji	0.1
	06 Feb 2024 15:15	Lakina	Tuvalu	0.1
	08 Feb 2024 19:30	Vandravandra	Fiji	0.1
	07 Feb 2024 21:45	Vatukarasa	Fiji	0.1
	07 Feb 2024 21:45	Korolevu	Fiji	0.1
	08 Feb 2024 18:45	Kalokolevu	Fiji	0.1
	07 Feb 2024 21:45	Bouwanga	Fiji	0.1
	07 Feb 2024 21:45	Taunovo	Fiji	0.1
	06 Feb 2024 15:15	Roreti	Kiribati	0.1
	07 Feb 2024 21:45	Cuvu	Fiji	0.1
	07 Feb 2024 21:45	Sigatoka	Fiji	0.1
	07 Feb 2024 21:45	Laselase	Fiji	0.1
	07 Feb 2024 22:00	Suva	Fiji	0.1
	07 Feb 2024 22:00	Tamavua	Fiji	0.1
	07 Feb 2024 22:00	Lauthala Bay	Fiji	0.1
	07 Feb 2024 22:00	Laucala	Fiji	0.1
	06 Feb 2024 15:15	Tonga	Tuvalu	0.1
	07 Feb 2024 21:45	Mbatiri	Fiji	0.1
	07 Feb 2024 21:45	Lomawal	Fiji	0.1
	08 Feb 2024 19:15	Andako	Fiji	0.1
	06 Feb 2024 15:15	Vaitupu	Tuvalu	0.1
	06 Feb 2024 15:15	Elsee	Fiji	0.1
	06 Feb 2024 15:30	Sumi	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.