Overall Green alert Tropical Cyclone for TWENTYEIGH-21
in New Caledonia
11 Apr 2021 06 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

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 76 km/h
Maximum storm surge 0.3 m (11 Apr 06:45 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 76 km/h 0.3 m 155 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)

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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 06:00 UTC

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 Apr 2021 18:00 79 - - - - - - -
GREEN 2 11 Apr 2021 00:00 79 - - - - - - -
GREEN 3 11 Apr 2021 06:00 76 - - - - - - -
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 11 Apr 2021 06:00 UTC
LevelCountryPopulation 
100-250 mmNew Caledonia241 
50-100 mmNew Caledonia30,338 

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 Apr 2021 18:00 74 - - - - - - -
Blue 2 11 Apr 2021 00:00 95 - - - - - - -
Blue 3 11 Apr 2021 06:00 222 Few people
- - - - New Caledonia




Impact estimation for the next 72h
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StormSurge

0.3 m

The maximum Storm surge height is  0.3m in Ouanache, New Caledonia. This height is estimated for 11 Apr 2021 06:45 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 11 Apr 2021 06:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
11 Apr 2021 06:45 Ouanache New Caledonia  0.3
11 Apr 2021 06:45 Paola New Caledonia  0.3
11 Apr 2021 06:45 Vieux Tuho New Caledonia  0.3
11 Apr 2021 06:45 Touho New Caledonia  0.3
11 Apr 2021 06:45 Kokengone New Caledonia  0.3
11 Apr 2021 16:30 Ho New Caledonia  0.2
11 Apr 2021 16:30 Meomo New Caledonia  0.2
11 Apr 2021 16:30 Houailou New Caledonia  0.2
11 Apr 2021 16:30 Ouakaya New Caledonia  0.2
11 Apr 2021 16:30 Poro New Caledonia  0.2
11 Apr 2021 16:30 Kouaoua New Caledonia  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 09:45 Upper Corindi Australia  0.2
11 Apr 2021 09:45 Woogoolga Australia  0.2
11 Apr 2021 09:45 Corindi Australia  0.2
11 Apr 2021 09:45 Red Rock Australia  0.2
11 Apr 2021 09:45 Wooli Australia  0.2
11 Apr 2021 09:45 Avondale Australia  0.2
11 Apr 2021 09:45 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 08:45 Gebelum Australia  0.2
11 Apr 2021 08:45 Dunwich Australia  0.2
11 Apr 2021 08:45 Wallen Wallen Australia  0.2
11 Apr 2021 08:45 Kooringal Australia  0.2
11 Apr 2021 08:45 Amity Point Australia  0.2
11 Apr 2021 08:45 Point Lookout 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
11 Apr 2021 11:15 Pemberton Australia  0.2
11 Apr 2021 11:15 Elliott Heads Australia  0.2
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
11 Apr 2021 10:15 Ouinne New Caledonia  0.1
11 Apr 2021 08:30 Coomera Australia  0.1
11 Apr 2021 08:30 Norwell Australia  0.1
11 Apr 2021 09:00 Coolum Australia  0.1
11 Apr 2021 09:00 Maroochydore Australia  0.1
11 Apr 2021 09:00 Coolum Beach Australia  0.1
11 Apr 2021 09:00 Mooloolaba Australia  0.1
11 Apr 2021 06:45 Saint-Denis New Caledonia  0.1
11 Apr 2021 06:45 Poindimie New Caledonia  0.1
11 Apr 2021 06:45 Bayes New Caledonia  0.1
12 Apr 2021 07:15 Woodgate Australia  0.1
12 Apr 2021 07:15 Redland Bay Australia  0.1
12 Apr 2021 07:15 Victoria Point Australia  0.1
12 Apr 2021 07:15 Woongoolba Australia  0.1
12 Apr 2021 07:15 Steiglitz Australia  0.1
12 Apr 2021 07:15 Canalpin Australia  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
11 Apr 2021 06:30 Tipindje New Caledonia  0.1
11 Apr 2021 06:30 Pindache New Caledonia  0.1
11 Apr 2021 10:45 Kawungan Australia  0.1
11 Apr 2021 10:45 Pialba Australia  0.1
11 Apr 2021 10:45 Scarness Australia  0.1
11 Apr 2021 10:45 Torquay Australia  0.1
11 Apr 2021 10:45 Urangan Australia  0.1
11 Apr 2021 10:30 Dundowran Australia  0.1
11 Apr 2021 10:30 Urraween Australia  0.1
11 Apr 2021 10:30 Point Vernon Australia  0.1
11 Apr 2021 10:30 Bingham Australia  0.1
11 Apr 2021 08:30 Evans Head Australia  0.1
11 Apr 2021 08:30 Broadwater Australia  0.1
11 Apr 2021 08:30 Wardell Australia  0.1
11 Apr 2021 08:30 Empire Vale Australia  0.1
12 Apr 2021 01:30 Prony New Caledonia  0.1
12 Apr 2021 01:30 Ouara New Caledonia  0.1
11 Apr 2021 08:45 Caloundra Australia  0.1
12 Apr 2021 06:30 Buxton Australia  0.1
12 Apr 2021 06:30 Burrum Australia  0.1
12 Apr 2021 06:30 Traviston Australia  0.1
12 Apr 2021 06:30 Toogoom Australia  0.1
12 Apr 2021 12:30 Soso Fiji  0.1
12 Apr 2021 12:30 Somosomo Fiji  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 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
11 Apr 2021 16:00 Ngoye New Caledonia  0.1
11 Apr 2021 16:00 Petit-Borindi New Caledonia  0.1
11 Apr 2021 09:00 Tewantin Australia  0.1
11 Apr 2021 09:00 Noosaville Australia  0.1
11 Apr 2021 09:00 Noosa Heads Australia  0.1
11 Apr 2021 06:15 Mamie New Caledonia  0.1
11 Apr 2021 06:15 Yate-Village New Caledonia  0.1
11 Apr 2021 06:15 Waho New Caledonia  0.1
11 Apr 2021 06:15 Goro New Caledonia  0.1
11 Apr 2021 11:00 Stuarts Point Australia  0.1
11 Apr 2021 11:00 Kinchela Creek Australia  0.1
11 Apr 2021 11:00 Pelican Island Australia  0.1
11 Apr 2021 11:00 Jerseyville Australia  0.1
11 Apr 2021 11:00 Cooloondurri Australia  0.1
11 Apr 2021 11:00 Arakoon Australia  0.1
11 Apr 2021 16:00 Saint Roch 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
12 Apr 2021 12:45 Tavua Fiji  0.1
12 Apr 2021 12:45 Solevu Fiji  0.1
11 Apr 2021 09:45 Ometteux New Caledonia  0.1
11 Apr 2021 09:45 Ponerihouen New Caledonia  0.1
11 Apr 2021 09:45 Mou New Caledonia  0.1
11 Apr 2021 09:45 Moneo New Caledonia  0.1
11 Apr 2021 09:00 Bribie View Australia  0.1
11 Apr 2021 09:00 Donnybrook Australia  0.1
11 Apr 2021 09:00 Bribie Australia  0.1
12 Apr 2021 12:30 Nalauwaki Fiji  0.1
12 Apr 2021 12:30 Momi Fiji  0.1
12 Apr 2021 12:30 Nadi Fiji  0.1
12 Apr 2021 12:30 Namaka Fiji  0.1
12 Apr 2021 03:30 Tavua Fiji  0.1
12 Apr 2021 03:30 Rabulu Fiji  0.1
11 Apr 2021 08:15 Tin Can Bay Australia  0.1
11 Apr 2021 13:00 Potnarvin Vanuatu  0.1
11 Apr 2021 13:00 Ipota Vanuatu  0.1
11 Apr 2021 21:00 Nde New Caledonia  0.1
11 Apr 2021 21:00 Paita New Caledonia  0.1
11 Apr 2021 06:15 Valla Australia  0.1
11 Apr 2021 06:15 Nambucca Australia  0.1
11 Apr 2021 06:15 Nambucca Australia  0.1
11 Apr 2021 08:30 Bulwer Australia  0.1
11 Apr 2021 08:30 Cowan Cowan Australia  0.1
11 Apr 2021 08:30 Tangalooma 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