Overall Green alert Tropical Cyclone for TWENTYEIGH-21
in New Caledonia

Impact

Tropical Cyclone TWENTYEIGH-21 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 65 km/h
Maximum storm surge 0.3 m (11 Apr 16:30 UTC)
Vulnerability Medium (New Caledonia)

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 65 km/h 0.3 m 108 mm 0.5
GFS Overall 79 km/h 0.3 m 216 mm 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

Wind

79 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 11 Apr 2021 12:00 UTC

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 10 Apr 2021 18:00 79 - - - - - - -
GREEN 2 11 Apr 2021 00:00 79 - - - - - - -
GREEN 3 11 Apr 2021 06:00 76 - - - - - - -
GREEN 4 11 Apr 2021 12:00 65 - - - - - - -




Impact estimation for the next 72h
Download:





Rain exposed population - AoIs

Estimations based on the bulletin of 11 Apr 2021 12:00 UTC
LevelCountryPopulation 
100-250 mmNew Caledonia8265 
50-100 mmNew Caledonia54954 

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 10 Apr 2021 18:00 74 - - - - - - -
Blue 2 11 Apr 2021 00:00 95 - - - - - - -
Blue 3 11 Apr 2021 06:00 155 - - - - - - -
Blue 4 11 Apr 2021 12:00 184 8 thousand
- - - - New Caledonia




Impact estimation for the next 72h

StormSurge

0.3 m

The maximum Storm surge height is  0.3m in Ho, New Caledonia. This height is estimated for 11 Apr 2021 16:30 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.

Calculation based on the bulletin of 11 Apr 2021 12:00 UTC
Alert Date (UTC) Name Country Storm surge height (m)
11 Apr 2021 16:30 Ho New Caledonia  0.3
11 Apr 2021 16:30 Meomo New Caledonia  0.3
11 Apr 2021 16:30 Houailou New Caledonia  0.3
11 Apr 2021 16:30 Ouakaya New Caledonia  0.3
11 Apr 2021 16:30 Poro New Caledonia  0.3
11 Apr 2021 16:30 Kouaoua New Caledonia  0.3
12 Apr 2021 17:45 Avondale Australia  0.2
12 Apr 2021 17:45 Moore Park Australia  0.2
12 Apr 2021 17:45 Fairymead Australia  0.2
12 Apr 2021 17:45 Port Bundaberg Australia  0.2
12 Apr 2021 17:45 The Grange Australia  0.2
12 Apr 2021 17:45 Burnett Heads Australia  0.2
11 Apr 2021 21:45 Benowa Australia  0.2
11 Apr 2021 21:45 Gold Coast Australia  0.2
11 Apr 2021 21:45 Moondarewa Australia  0.2
11 Apr 2021 21:45 Southport Australia  0.2
11 Apr 2021 21:45 Surfers Paradise Australia  0.2
11 Apr 2021 21:45 Broadbeach Australia  0.2
11 Apr 2021 21:45 West Burleigh Australia  0.2
11 Apr 2021 21:45 Burleigh Heads Australia  0.2
11 Apr 2021 21:45 Piggabeen Australia  0.2
11 Apr 2021 21:45 Bilambil Australia  0.2
11 Apr 2021 21:45 Palm Beach Australia  0.2
11 Apr 2021 21:45 Currumbin Australia  0.2
11 Apr 2021 21:45 Tugun Australia  0.2
11 Apr 2021 21:45 Bilinga Australia  0.2
11 Apr 2021 21:45 Tweed Heads Australia  0.2
11 Apr 2021 21:45 Coolangatta Australia  0.2
11 Apr 2021 21:45 Kingscliff-Fingal Australia  0.2
11 Apr 2021 23:30 Tumbulgum Australia  0.2
11 Apr 2021 23:30 North Tumbulgum Australia  0.2
11 Apr 2021 23:30 Terranora Australia  0.2
11 Apr 2021 23:30 Stotts Creek Australia  0.2
11 Apr 2021 23:30 Cudgen Australia  0.2
11 Apr 2021 23:30 Chinderah Australia  0.2
11 Apr 2021 23:30 Kingscliff Australia  0.2
11 Apr 2021 13:15 Lautoka Fiji  0.2
11 Apr 2021 13:15 Nailanga Fiji  0.2
11 Apr 2021 13:15 Sorokoba Fiji  0.2
11 Apr 2021 13:15 Ba Fiji  0.2
11 Apr 2021 13:15 Natunuka Fiji  0.2
12 Apr 2021 18:00 Bargara Australia  0.2
11 Apr 2021 16:00 Ouasse New Caledonia  0.2
12 Apr 2021 02:15 Ouanache New Caledonia  0.2
12 Apr 2021 02:15 Paola New Caledonia  0.2
12 Apr 2021 02:15 Vieux Tuho New Caledonia  0.2
12 Apr 2021 02:15 Touho New Caledonia  0.2
12 Apr 2021 02:15 Kokengone New Caledonia  0.2
11 Apr 2021 16:00 Ouinne New Caledonia  0.1
12 Apr 2021 11:30 Kuine New Caledonia  0.1
12 Apr 2021 11:30 Nakety New Caledonia  0.1
12 Apr 2021 11:30 Thio New Caledonia  0.1
12 Apr 2021 01:30 Nouville New Caledonia  0.1
12 Apr 2021 01:30 Noumea New Caledonia  0.1
12 Apr 2021 01:30 Dumbea New Caledonia  0.1
12 Apr 2021 01:30 Comm. du Mont-Dore New Caledonia  0.1
12 Apr 2021 01:30 Saint-Louis New Caledonia  0.1
12 Apr 2021 01:30 Plum New Caledonia  0.1
12 Apr 2021 07:00 Pemberton Australia  0.1
12 Apr 2021 07:00 Elliott Heads Australia  0.1
12 Apr 2021 07:00 Woodgate Australia  0.1
12 Apr 2021 06:15 Buxton Australia  0.1
12 Apr 2021 06:15 Burrum Australia  0.1
12 Apr 2021 06:15 Traviston Australia  0.1
12 Apr 2021 06:15 Toogoom Australia  0.1
12 Apr 2021 06:15 Dundowran Australia  0.1
12 Apr 2021 06:15 Point Vernon Australia  0.1
11 Apr 2021 12:30 Upper Corindi Australia  0.1
11 Apr 2021 12:30 Woogoolga Australia  0.1
11 Apr 2021 12:30 Corindi Australia  0.1
11 Apr 2021 12:30 Red Rock Australia  0.1
11 Apr 2021 12:30 Wooli Australia  0.1
11 Apr 2021 16:00 Ngoye New Caledonia  0.1
11 Apr 2021 16:00 Petit-Borindi New Caledonia  0.1
12 Apr 2021 20:00 Tiabet New Caledonia  0.1
12 Apr 2021 20:00 Poum-Plage New Caledonia  0.1
11 Apr 2021 12:00 Urraween Australia  0.1
11 Apr 2021 12:00 Kawungan Australia  0.1
11 Apr 2021 12:00 Pialba Australia  0.1
11 Apr 2021 12:00 Scarness Australia  0.1
11 Apr 2021 12:00 Torquay Australia  0.1
11 Apr 2021 12:00 Urangan Australia  0.1
11 Apr 2021 12:00 Bingham Australia  0.1
11 Apr 2021 16:00 Saint Roch New Caledonia  0.1
11 Apr 2021 14:45 Saint-Denis New Caledonia  0.1
11 Apr 2021 14:45 Poindimie New Caledonia  0.1
11 Apr 2021 14:45 Bayes New Caledonia  0.1
11 Apr 2021 21:45 Redland Bay Australia  0.1
11 Apr 2021 21:45 Victoria Point Australia  0.1
11 Apr 2021 21:45 Woongoolba Australia  0.1
11 Apr 2021 21:45 Norwell Australia  0.1
11 Apr 2021 21:45 Steiglitz Australia  0.1
11 Apr 2021 21:45 Dunwich Australia  0.1
11 Apr 2021 21:45 Wallen Wallen Australia  0.1
11 Apr 2021 21:45 Canalpin Australia  0.1
12 Apr 2021 01:00 Prony New Caledonia  0.1
12 Apr 2021 01:00 Ouara New Caledonia  0.1
11 Apr 2021 18:15 Kooringal Australia  0.1
11 Apr 2021 18:15 Amity Point Australia  0.1
11 Apr 2021 18:15 Point Lookout Australia  0.1
11 Apr 2021 20:45 Panane New Caledonia  0.1
11 Apr 2021 20:45 Mouane New Caledonia  0.1
11 Apr 2021 20:45 Ono New Caledonia  0.1
12 Apr 2021 03:30 Tavua Fiji  0.1
12 Apr 2021 03:30 Rabulu Fiji  0.1
12 Apr 2021 05:15 Tipindje New Caledonia  0.1
12 Apr 2021 05:15 Pindache New Caledonia  0.1
12 Apr 2021 13:45 Mamie New Caledonia  0.1
12 Apr 2021 13:45 Yate-Village New Caledonia  0.1
12 Apr 2021 07:00 Gebelum Australia  0.1
11 Apr 2021 15:15 Balaide New Caledonia  0.1
11 Apr 2021 15:15 Saint-Paul New Caledonia  0.1
11 Apr 2021 15:15 Pouebo New Caledonia  0.1
12 Apr 2021 07:15 Coomera Australia  0.1
13 Apr 2021 00:30 Namaka Fiji  0.1
12 Apr 2021 12:45 Nalauwaki Fiji  0.1
12 Apr 2021 20:15 Gadji New Caledonia  0.1
12 Apr 2021 20:15 Kuto New Caledonia  0.1
12 Apr 2021 20:15 Wapan New Caledonia  0.1
12 Apr 2021 20:15 Vao New Caledonia  0.1
12 Apr 2021 11:30 Canala New Caledonia  0.1
12 Apr 2021 12:30 Solevu Fiji  0.1
12 Apr 2021 12:30 Momi Fiji  0.1
12 Apr 2021 12:30 Nadi Fiji  0.1
12 Apr 2021 12:45 Tavua Fiji  0.1
11 Apr 2021 17:30 Tin Can Bay Australia  0.1
12 Apr 2021 21:15 Soso Fiji  0.1
12 Apr 2021 21:15 Somosomo Fiji  0.1
11 Apr 2021 13:00 Potnarvin Vanuatu  0.1
11 Apr 2021 13:00 Ipota Vanuatu  0.1
11 Apr 2021 16:15 Nde New Caledonia  0.1
11 Apr 2021 16:15 Paita New Caledonia  0.1
11 Apr 2021 15:45 Ometteux New Caledonia  0.1
11 Apr 2021 15:45 Ponerihouen New Caledonia  0.1
11 Apr 2021 15:45 Mou New Caledonia  0.1
11 Apr 2021 15:45 Moneo New Caledonia  0.1
12 Apr 2021 11:30 Saint-Gabriel New Caledonia  0.1
12 Apr 2021 12:30 Matayalevu Fiji  0.1
12 Apr 2021 12:30 Matacawalevu Fiji  0.1
12 Apr 2021 12:30 Sisili Fiji  0.1
12 Apr 2021 00:00 Wala New Caledonia  0.1
12 Apr 2021 00:00 Bweo New Caledonia  0.1