Overall Green alert Tropical Cyclone for OSAI-24
in Cook Islands

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 0.6 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 112 km/h 0.6 m 761 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)

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 09 Feb 2024 06:00 UTC (Overall situation)
CategoryCountryPopulation 
Tropical StormAmerican Samoa00
+

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert Date (UTC) Max Winds (km/h) Pop in Cat. 1 or higher TS Cat. 1 Cat. 2 Cat. 3 Cat. 4 Cat. 5 Countries
GREEN 1 06 Feb 2024 18:00 79 - - - - - - -
GREEN 2 07 Feb 2024 00:00 79 - - - - - - -
GREEN 3 07 Feb 2024 06:00 86 - - - - - - -
GREEN 4 07 Feb 2024 12:00 112 - - - - - - -
GREEN 5 07 Feb 2024 18:00 86 - - - - - - -
GREEN 6 08 Feb 2024 00:00 76 - - - - - - -
GREEN 7 08 Feb 2024 06:00 76 - - - - - - -
GREEN 8 08 Feb 2024 12:00 58 - - - - - - -
GREEN 9 08 Feb 2024 18:00 54 - - - - - - -
GREEN 10 09 Feb 2024 00:00 50 - - - - - - -
GREEN 11 09 Feb 2024 06:00 79 - - - - - - -
Download:





Impact estimation for the next 72h




Rain exposed population - AoIs

Estimations based on the bulletin of 09 Feb 2024 06:00 UTC (Overall situation)
LevelCountryPopulation 
100-250 mmTuvalu, Tokelau, Cook Islands, American Samoa, Fiji, Wallis and Futuna, Tonga, French Polynesia816,337
+
Tuvalu1,269 
Tokelau1,250 
Cook Islands2,957 
American Samoa54,301 
Fiji492,216 
Wallis and Futuna13,150 
Samoa193,227 
Tonga1,056 
French Polynesia56,907 
50-100 mmTuvalu, Cook Islands, Fiji, American Samoa, French Polynesia386,526
+
Tuvalu8,646 
Cook Islands343 
American Samoa1,236 
Fiji375,033 
French Polynesia1,266 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 06 Feb 2024 18:00 111 - - - - - - -
Blue 2 07 Feb 2024 00:00 118 - - - - - - -
Blue 3 07 Feb 2024 06:00 181 - - - - - - -
Blue 4 07 Feb 2024 12:00 202 - - - - - - -
Blue 5 07 Feb 2024 18:00 155 - - - - - - -
Blue 6 08 Feb 2024 00:00 199 - - - - - - -
Blue 7 08 Feb 2024 06:00 93 - - - - - - -
Blue 8 08 Feb 2024 12:00 63 - - - - - - -
Blue 9 08 Feb 2024 18:00 104 - - - - - - -
Blue 10 09 Feb 2024 00:00 101 - - - - - - -
Blue 11 09 Feb 2024 06:00 712 210 thousand
- - - - Tuvalu, Tokelau, Cook Islands, American Samoa, Fiji, Wallis and Futuna, Samoa, Tonga, French Polynesia




Impact estimation for the next 72h

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

Estimations based on the bulletin of 09 Feb 2024 06:00 UTC (Overall situation)
LevelCountryPopulation 
0.5 - 1.0 mFiji51 
0.25 - 0.5 mFiji19,007 

Storm Surge Exposed locations

Calculation based on the bulletin of 09 Feb 2024 06:00 UTC (Overall situation)
    
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
09 Feb 2024 18:15 Lautoka Fiji  0.5
09 Feb 2024 18:15 Nailanga Fiji  0.5
09 Feb 2024 18:15 Sorokoba Fiji  0.5
09 Feb 2024 18:15 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
08 Feb 2024 09:15 Malake Fiji  0.5
08 Feb 2024 09:15 Biagunu Fiji  0.5
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
07 Feb 2024 11:15 Natua Fiji  0.4
07 Feb 2024 11:15 Mbangata Fiji  0.4
07 Feb 2024 11:15 Savusavu Fiji  0.4
09 Feb 2024 18:15 Natunuka Fiji  0.4
09 Feb 2024 18:15 Tavua Fiji  0.4
08 Feb 2024 12:00 Rabulu Fiji  0.4
08 Feb 2024 12:00 Togowere Fiji  0.4
10 Feb 2024 03:30 Gasele Fiji  0.4
10 Feb 2024 03:30 Soso Fiji  0.4
10 Feb 2024 03:30 Kavala Fiji  0.4
10 Feb 2024 03:30 Kaduvu Fiji  0.4
10 Feb 2024 03:30 Nukuvou Fiji  0.4
10 Feb 2024 03:30 Nabouwalu Fiji  0.4
10 Feb 2024 03:30 Vabea 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
12 Feb 2024 05:45 Koroinasolo Fiji  0.4
12 Feb 2024 05:45 Savu Sau Fiji  0.4
12 Feb 2024 05:45 Navinggiri Fiji  0.4
12 Feb 2024 05:45 Yangganga Fiji  0.4
12 Feb 2024 05:45 Nawailevu Fiji  0.4
07 Feb 2024 08:00 Namboutini 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 16:30 Nayavutoka Fiji  0.3
07 Feb 2024 03:00 Nauouo Fiji  0.3
07 Feb 2024 03:00 Levuka Fiji  0.3
12 Feb 2024 05:45 Nasarowangga Fiji  0.3
11 Feb 2024 04:45 Ndawara Fiji  0.3
11 Feb 2024 04:45 Waisa 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
12 Feb 2024 01:00 Kasavu Fiji  0.3
12 Feb 2024 01:00 Nausori Fiji  0.3
12 Feb 2024 01:00 Lokia Fiji  0.3
12 Feb 2024 01:00 Naimasimasi Fiji  0.3
12 Feb 2024 01:00 Cautata Fiji  0.3
12 Feb 2024 01:00 Nasilai Fiji  0.3
12 Feb 2024 01:00 Dromuna Fiji  0.3
07 Feb 2024 07:30 Namaka Fiji  0.3
08 Feb 2024 20:30 Soso Fiji  0.3
08 Feb 2024 20:30 Somosomo Fiji  0.3
08 Feb 2024 20:30 Matayalevu Fiji  0.3
08 Feb 2024 20:30 Matacawalevu Fiji  0.3
08 Feb 2024 20:30 Sisili Fiji  0.3
07 Feb 2024 08:00 Naua Fiji  0.3
07 Feb 2024 08:00 Tawake Fiji  0.3
07 Feb 2024 07:15 Tavua Fiji  0.3
07 Feb 2024 07:15 Nalauwaki Fiji  0.3
07 Feb 2024 07:00 Solevu Fiji  0.2
08 Feb 2024 08:30 Galoa Fiji  0.2
08 Feb 2024 08:30 Yanutha Fiji  0.2
08 Feb 2024 08:30 Matavuralevu Fiji  0.2
08 Feb 2024 08:30 Pacific Harbour Fiji  0.2
08 Feb 2024 08:30 Waisomo Fiji  0.2
08 Feb 2024 08:30 Dakuimbeqa Fiji  0.2
08 Feb 2024 08:30 Lalati Fiji  0.2
08 Feb 2024 08:30 Navua Fiji  0.2
08 Feb 2024 08:30 Naitionitoni Fiji  0.2
08 Feb 2024 08:30 Mau Fiji  0.2
09 Feb 2024 07:45 Nakondu Fiji  0.2
09 Feb 2024 07:45 Nathamaki Fiji  0.2
09 Feb 2024 07:45 Nasau Fiji  0.2
07 Feb 2024 23:15 Navindamu Fiji  0.2
07 Feb 2024 23:15 Nagumu Fiji  0.2
11 Feb 2024 11:45 Vunivatu Fiji  0.2
11 Feb 2024 11:45 Navukembuli Fiji  0.2
11 Feb 2024 11:45 Namukalau Fiji  0.2
07 Feb 2024 07:45 Nukusa Fiji  0.2
07 Feb 2024 07:00 Nadi Fiji  0.2
07 Feb 2024 05:45 Vangai 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
11 Feb 2024 14:45 Nasau Fiji  0.2
11 Feb 2024 14:45 Talaulia Fiji  0.2
11 Feb 2024 14:45 Nalotu Fiji  0.2
11 Feb 2024 14:45 Vunisea Fiji  0.2
11 Feb 2024 14:45 Mburelevu Fiji  0.2
11 Feb 2024 14:45 Mokoisa Fiji  0.2
11 Feb 2024 14:45 Naikorokoro Fiji  0.2
11 Feb 2024 14:45 Namara Fiji  0.2
11 Feb 2024 14:45 Keteira Fiji  0.2
08 Feb 2024 20:45 Mbukama Fiji  0.2
08 Feb 2024 20:45 Yasawairara Fiji  0.2
07 Feb 2024 06:30 Ndenimanu Fiji  0.2
07 Feb 2024 06:30 Ndalomo Fiji  0.2
07 Feb 2024 06:15 Naruwai Fiji  0.2
11 Feb 2024 05:30 Momi Fiji  0.2
07 Feb 2024 07:45 Nambouono 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
06 Feb 2024 21:30 Navakawau Fiji  0.2
06 Feb 2024 21:30 Makongai Fiji  0.2
11 Feb 2024 14:45 Korovisilou Fiji  0.2
11 Feb 2024 15:30 Sawaieke Fiji  0.2
11 Feb 2024 03:15 Roreti Kiribati  0.2
11 Feb 2024 03:15 Lakina Tuvalu  0.2
11 Feb 2024 03:30 Elsee Fiji  0.2
11 Feb 2024 03:30 Sumi Fiji  0.2
11 Feb 2024 03:15 Tonga Tuvalu  0.2
06 Feb 2024 21:15 Vandravandra Fiji  0.1
06 Feb 2024 21:15 Kalokolevu Fiji  0.1
07 Feb 2024 06:45 Suva Fiji  0.1
07 Feb 2024 06:45 Tamavua Fiji  0.1
07 Feb 2024 06:45 Lauthala Bay Fiji  0.1
07 Feb 2024 06:45 Laucala Fiji  0.1
07 Feb 2024 07:00 Andako Fiji  0.1
11 Feb 2024 03:15 Vaitupu Tuvalu  0.1
11 Feb 2024 14:45 Vatukarasa Fiji  0.1
11 Feb 2024 14:45 Korolevu Fiji  0.1
07 Feb 2024 18:45 Lomawal Fiji  0.1
11 Feb 2024 14:45 Cuvu Fiji  0.1
11 Feb 2024 14:45 Sigatoka Fiji  0.1
11 Feb 2024 14:45 Laselase Fiji  0.1
11 Feb 2024 14:45 Mbatiri Fiji  0.1
11 Feb 2024 14:45 Bouwanga Fiji  0.1
11 Feb 2024 14:45 Taunovo Fiji  0.1