Overall Green alert Tropical Cyclone for FOUR-20
in , Fiji, Vanuatu
13 Dec 2020 00 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone FOUR-20 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source ECMWF
Exposed countries Tonga
Exposed population No people in Category 1 or higher
Maximum wind speed 112 km/h
Maximum storm surge 0.2 m (13 Dec 14:15 UTC)
Vulnerability --

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 112 km/h 0.2 m 424 mm 0.5
ECMWF Overall 112 km/h 0.4 m 735 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

Up to 10 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 13 Dec 2020 00:00 UTC
CategoryCountryPopulation 
Tropical StormTonga10,152 

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
GREEN 1 10 Dec 2020 12:00 83 - - - - - - -
GREEN 2 11 Dec 2020 00:00 61 - - - - - - -
GREEN 3 11 Dec 2020 12:00 72 - - - - - - -
GREEN 4 12 Dec 2020 00:00 72 -
- - - - - New Caledonia
GREEN 5 12 Dec 2020 12:00 83 - - - - - - -
GREEN 6 13 Dec 2020 00:00 112 -
- - - - - Tonga
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 13 Dec 2020 00:00 UTC
LevelCountryPopulation 
250-500 mmTonga01 
100-250 mmWallis and Futuna, Samoa, Vanuatu, Tonga, Fiji45,451
+
Fiji2,542 
Wallis and Futuna5,527 
Samoa15,360 
Vanuatu5,676 
Tonga16,346 
50-100 mmTuvalu, Solomon Islands, Fiji, Wallis and Futuna, Samoa, Vanuatu, Tonga, New Caledonia249,998
+
Tuvalu481 
Solomon Islands253 
Fiji156,504 
Wallis and Futuna7,976 
Samoa20,532 
Vanuatu52,935 
Tonga4,102 
New Caledonia7,215 

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
Blue 1 10 Dec 2020 12:00 23 - - - - - - -
Blue 2 11 Dec 2020 00:00 17 - - - - - - -
Blue 3 11 Dec 2020 12:00 20 - - - - - - -
Blue 4 12 Dec 2020 00:00 20 Few people - - - - - - New Caledonia
Blue 5 12 Dec 2020 12:00 23 - - - - - - -
Blue 6 13 Dec 2020 00:00 424 50 thousand
- - - Tuvalu, Solomon Islands, Fiji, Wallis and Futuna, Samoa, Vanuatu, Tonga, New Caledonia




Impact estimation for the next 72h
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StormSurge

0.2 m

The maximum Storm surge height is  0.2m in Lautoka, Fiji. This height is estimated for 13 Dec 2020 14:15 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 13 Dec 2020 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
13 Dec 2020 14:15 Lautoka Fiji  0.2
13 Dec 2020 14:15 Nailanga Fiji  0.2
13 Dec 2020 14:15 Sorokoba Fiji  0.2
13 Dec 2020 14:15 Ba Fiji  0.2
14 Dec 2020 03:00 Lao Fiji  0.2
14 Dec 2020 03:00 Nailou Fiji  0.2
14 Dec 2020 03:00 Nawi Fiji  0.2
14 Dec 2020 03:00 Vunikura Fiji  0.2
14 Dec 2020 03:00 Napuka Fiji  0.2
13 Dec 2020 14:30 Moneo New Caledonia  0.2
13 Dec 2020 14:30 Ho New Caledonia  0.2
13 Dec 2020 14:30 Meomo New Caledonia  0.2
13 Dec 2020 14:30 Houailou New Caledonia  0.2
13 Dec 2020 14:30 Ouakaya New Caledonia  0.2
13 Dec 2020 14:30 Poro New Caledonia  0.2
13 Dec 2020 12:45 Natua Fiji  0.2
13 Dec 2020 12:45 Mbangata Fiji  0.2
13 Dec 2020 12:45 Savusavu Fiji  0.2
13 Dec 2020 12:45 Naindi Fiji  0.2
13 Dec 2020 12:45 Korosi Fiji  0.2
15 Dec 2020 02:15 Koroinasolo Fiji  0.2
15 Dec 2020 02:15 Savu Sau Fiji  0.2
15 Dec 2020 02:15 Navinggiri Fiji  0.2
15 Dec 2020 02:15 Yangganga Fiji  0.2
15 Dec 2020 02:15 Nawailevu Fiji  0.2
13 Dec 2020 19:45 Takataka Solomon Islands  0.2
13 Dec 2020 19:45 Ahia Solomon Islands  0.2
13 Dec 2020 14:00 Natunuka Fiji  0.2
13 Dec 2020 21:45 Poum-Plage New Caledonia  0.2
13 Dec 2020 21:45 Arama New Caledonia  0.2
13 Dec 2020 21:45 Pam New Caledonia  0.2
13 Dec 2020 03:15 Pek Vanuatu  0.2
13 Dec 2020 03:15 Crepeta Vanuatu  0.2
13 Dec 2020 03:15 Ngusui Vanuatu  0.2
13 Dec 2020 14:15 Tavua Fiji  0.2
13 Dec 2020 14:30 Namaka Fiji  0.2
14 Dec 2020 01:15 Vangai Fiji  0.2
14 Dec 2020 17:15 Rabulu Fiji  0.2
14 Dec 2020 17:15 Togowere Fiji  0.2
13 Dec 2020 21:15 Balaide New Caledonia  0.1
13 Dec 2020 21:15 Saint-Paul New Caledonia  0.1
14 Dec 2020 06:45 Kouaoua New Caledonia  0.1
14 Dec 2020 21:15 Umpon Mompu Vanuatu  0.1
14 Dec 2020 21:15 Potnarvin Vanuatu  0.1
14 Dec 2020 21:15 Yawisaghuwi Vanuatu  0.1
14 Dec 2020 21:15 Ipota Vanuatu  0.1
14 Dec 2020 21:15 Ifo Vanuatu  0.1
13 Dec 2020 23:15 Nabouwalu Fiji  0.1
13 Dec 2020 23:15 Thavanga Fiji  0.1
13 Dec 2020 23:15 Ndaria Fiji  0.1
13 Dec 2020 23:15 Rave-rave Fiji  0.1
14 Dec 2020 06:00 Korovou Fiji  0.1
14 Dec 2020 06:00 Lodoni Fiji  0.1
14 Dec 2020 06:00 Lawaki Fiji  0.1
14 Dec 2020 06:00 Ucunivanua Fiji  0.1
14 Dec 2020 06:00 Naingani Fiji  0.1
14 Dec 2020 06:00 Navuti Fiji  0.1
14 Dec 2020 06:00 Nasaga Fiji  0.1
14 Dec 2020 06:00 Rukuruku Fiji  0.1
14 Dec 2020 06:00 Lovoni Fiji  0.1
13 Dec 2020 14:00 Solevu Fiji  0.1
13 Dec 2020 17:30 Ouanache New Caledonia  0.1
13 Dec 2020 17:30 Paola New Caledonia  0.1
13 Dec 2020 17:30 Vieux Tuho New Caledonia  0.1
13 Dec 2020 17:30 Touho New Caledonia  0.1
13 Dec 2020 17:30 Kokengone New Caledonia  0.1
14 Dec 2020 23:15 Nauouo Fiji  0.1
14 Dec 2020 23:15 Levuka Fiji  0.1
13 Dec 2020 14:00 Soso Fiji  0.1
13 Dec 2020 14:00 Somosomo Fiji  0.1
13 Dec 2020 02:00 Levonu Vanuatu  0.1
13 Dec 2020 02:00 Avira Vanuatu  0.1
13 Dec 2020 14:15 Tavua Fiji  0.1
13 Dec 2020 18:30 Narano Solomon Islands  0.1
13 Dec 2020 18:30 Napurongo Solomon Islands  0.1
13 Dec 2020 18:30 Naganea Solomon Islands  0.1
13 Dec 2020 18:30 Nakuhu Solomon Islands  0.1
13 Dec 2020 18:30 Naparaohau Solomon Islands  0.1
13 Dec 2020 18:30 Naana Solomon Islands  0.1
13 Dec 2020 18:30 Mwaniwowo Solomon Islands  0.1
13 Dec 2020 18:30 Mwarairaru Solomon Islands  0.1
13 Dec 2020 18:30 Maniborkosi Solomon Islands  0.1
13 Dec 2020 18:30 Nasuragena Solomon Islands  0.1
13 Dec 2020 18:30 Funakumwa Solomon Islands  0.1
13 Dec 2020 18:30 Tawarogha Solomon Islands  0.1
13 Dec 2020 18:30 Geta Solomon Islands  0.1
13 Dec 2020 18:30 Star Harb Solomon Islands  0.1
13 Dec 2020 18:30 Mami Solomon Islands  0.1
13 Dec 2020 18:30 Fageifa Solomon Islands  0.1
13 Dec 2020 18:30 Ragapu Solomon Islands  0.1
13 Dec 2020 18:30 Ghupuna Solomon Islands  0.1
13 Dec 2020 05:15 Nepoui New Caledonia  0.1
13 Dec 2020 05:15 Station Ouaneko New Caledonia  0.1
13 Dec 2020 05:15 Station de Beaupre New Caledonia  0.1
14 Dec 2020 01:00 Nanduri Fiji  0.1
14 Dec 2020 01:00 Vatutandova Fiji  0.1
14 Dec 2020 01:00 Nasea Fiji  0.1
13 Dec 2020 14:15 Nalauwaki Fiji  0.1
13 Dec 2020 02:00 Vunivatu Fiji  0.1
13 Dec 2020 02:00 Navukembuli Fiji  0.1
13 Dec 2020 02:00 Naua Fiji  0.1
13 Dec 2020 02:00 Namukalau Fiji  0.1
13 Dec 2020 21:30 Tiabet New Caledonia  0.1
13 Dec 2020 21:30 Poum New Caledonia  0.1
13 Dec 2020 14:15 Ndawara Fiji  0.1
13 Dec 2020 14:15 Waisa Fiji  0.1
13 Dec 2020 09:00 Saint-Denis New Caledonia  0.1
13 Dec 2020 09:00 Poindimie New Caledonia  0.1
13 Dec 2020 09:00 Ometteux New Caledonia  0.1
13 Dec 2020 09:00 Ponerihouen New Caledonia  0.1
13 Dec 2020 09:00 Bayes New Caledonia  0.1
13 Dec 2020 04:45 Mamie New Caledonia  0.1
13 Dec 2020 04:45 Yate-Village New Caledonia  0.1
13 Dec 2020 04:45 Waho New Caledonia  0.1
13 Dec 2020 04:45 Goro New Caledonia  0.1
15 Dec 2020 00:00 Kasavu Fiji  0.1
15 Dec 2020 00:00 Naimasimasi Fiji  0.1
13 Dec 2020 04:30 Loanatom Vanuatu  0.1
13 Dec 2020 04:30 Loounemeloupang Vanuatu  0.1
13 Dec 2020 04:30 Loounimhapeun Vanuatu  0.1
13 Dec 2020 04:30 Laounalang Vanuatu  0.1
13 Dec 2020 04:30 Lowkahmal Vanuatu  0.1
13 Dec 2020 04:30 Lownepina Vanuatu  0.1
13 Dec 2020 04:30 Imwareupo Vanuatu  0.1
13 Dec 2020 04:30 Waisisi Vanuatu  0.1
13 Dec 2020 14:15 Ndalomo Fiji  0.1
13 Dec 2020 20:45 Houone New Caledonia  0.1
13 Dec 2020 02:00 Manpay Vanuatu  0.1
13 Dec 2020 02:00 Nikaura Vanuatu  0.1
13 Dec 2020 02:00 Tavio Vanuatu  0.1
13 Dec 2020 02:00 Leman Vanuatu  0.1
13 Dec 2020 02:00 Votlo Vanuatu  0.1
13 Dec 2020 02:00 Mate Vanuatu  0.1
13 Dec 2020 02:00 Nul Vanuatu  0.1
13 Dec 2020 02:00 Filakara Vanuatu  0.1
14 Dec 2020 18:15 Kaokaona Solomon Islands  0.1
14 Dec 2020 18:15 Umara Solomon Islands  0.1
14 Dec 2020 18:15 Pamua Solomon Islands  0.1
14 Dec 2020 18:15 Sungasau Solomon Islands  0.1
14 Dec 2020 18:15 Tawarodo Solomon Islands  0.1
14 Dec 2020 18:15 Hulihale Solomon Islands  0.1
14 Dec 2020 18:15 Kaonasughu Solomon Islands  0.1
14 Dec 2020 18:15 Waimapuru Solomon Islands  0.1
14 Dec 2020 18:15 Mwanimauru Solomon Islands  0.1
14 Dec 2020 18:15 Manihinua Solomon Islands  0.1
14 Dec 2020 18:15 Manchuki Solomon Islands  0.1
14 Dec 2020 18:15 Ngorangora Solomon Islands  0.1
14 Dec 2020 18:15 Arohane Solomon Islands  0.1
14 Dec 2020 18:15 Tawani Solomon Islands  0.1
14 Dec 2020 18:15 Manewiriwiri Solomon Islands  0.1
13 Dec 2020 08:30 Gadji New Caledonia  0.1
13 Dec 2020 08:30 Kuto New Caledonia  0.1
13 Dec 2020 08:30 Wapan New Caledonia  0.1
13 Dec 2020 08:30 Vao New Caledonia  0.1
13 Dec 2020 13:45 Matayalevu Fiji  0.1
13 Dec 2020 21:15 Ouasse New Caledonia  0.1
13 Dec 2020 08:45 Mou New Caledonia  0.1
13 Dec 2020 04:00 Tenmaru Vanuatu  0.1
13 Dec 2020 04:00 Wowo Vanuatu  0.1
13 Dec 2020 04:00 Asavagas Vanuatu  0.1
13 Dec 2020 04:00 Laruru Vanuatu  0.1
13 Dec 2020 04:00 Vao Vanuatu  0.1
13 Dec 2020 23:30 Nausori Fiji  0.1
13 Dec 2020 23:30 Lokia Fiji  0.1
13 Dec 2020 23:30 Cautata Fiji  0.1
13 Dec 2020 23:30 Nasilai Fiji  0.1
13 Dec 2020 23:30 Dromuna Fiji  0.1
13 Dec 2020 13:45 Nayavutoka Fiji  0.1
14 Dec 2020 22:30 Vunisea Fiji  0.1
14 Dec 2020 22:30 Mburelevu Fiji  0.1
14 Dec 2020 22:30 Mokoisa Fiji  0.1
14 Dec 2020 22:30 Naikorokoro Fiji  0.1
14 Dec 2020 22:30 Namara Fiji  0.1
14 Dec 2020 22:30 Gasele Fiji  0.1
14 Dec 2020 22:30 Soso Fiji  0.1
14 Dec 2020 22:30 Kavala Fiji  0.1
14 Dec 2020 22:30 Kaduvu Fiji  0.1
13 Dec 2020 06:45 Rakiraki Fiji  0.1
13 Dec 2020 06:45 Vaileka Fiji  0.1
13 Dec 2020 06:45 Nanukuloa Fiji  0.1
13 Dec 2020 06:45 Nasau Fiji  0.1
13 Dec 2020 06:00 Ouaco New Caledonia  0.1
13 Dec 2020 06:00 Voh New Caledonia  0.1
13 Dec 2020 06:00 Oundjo New Caledonia  0.1
13 Dec 2020 05:15 Panane New Caledonia  0.1
13 Dec 2020 05:15 Mouane New Caledonia  0.1
13 Dec 2020 05:15 Ono New Caledonia  0.1
13 Dec 2020 05:15 Wala New Caledonia  0.1
13 Dec 2020 05:15 Bweo New Caledonia  0.1
13 Dec 2020 05:15 Pairome New Caledonia  0.1
15 Dec 2020 01:45 Korotasere Fiji  0.1
15 Dec 2020 01:45 Naweni Fiji  0.1
15 Dec 2020 01:45 Nakarambo Fiji  0.1
15 Dec 2020 01:45 Viani Fiji  0.1
13 Dec 2020 14:45 Nakondu Fiji  0.1
13 Dec 2020 14:45 Nathamaki Fiji  0.1
13 Dec 2020 14:45 Nasau Fiji  0.1
13 Dec 2020 09:45 Lowarhe Vanuatu  0.1
13 Dec 2020 09:45 Longtal Vanuatu  0.1
13 Dec 2020 09:45 Coulons Vanuatu  0.1
13 Dec 2020 09:45 Saraotou Vanuatu  0.1
14 Dec 2020 18:45 Souleisere Vanuatu  0.1
14 Dec 2020 18:45 Piapouria Vanuatu  0.1
14 Dec 2020 18:45 Mae Vanuatu  0.1
14 Dec 2020 18:45 Tourebiou Vanuatu  0.1
14 Dec 2020 18:45 Atsaritibi Vanuatu  0.1
14 Dec 2020 18:45 Robertsons Vanuatu  0.1
14 Dec 2020 18:45 Bakakara Vanuatu  0.1
14 Dec 2020 18:45 Terou Vanuatu  0.1
14 Dec 2020 18:45 Worovok Vanuatu  0.1
14 Dec 2020 18:45 Ladhu Vanuatu  0.1
14 Dec 2020 18:45 Lavatavo Vanuatu  0.1
14 Dec 2020 18:45 Iakobone Vanuatu  0.1