Overall Green alert Tropical Cyclone for TWENTYEIGH-21
in New Caledonia
12 Apr 2021 00 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 79 km/h
Maximum storm surge 0.3 m (11 Apr 04:15 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 79 km/h 0.3 m 216 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 12 Apr 2021 00:00 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 - - - - - - -
GREEN 4 11 Apr 2021 12:00 65 - - - - - - -
GREEN 5 11 Apr 2021 18:00 65 - - - - - - -
GREEN 6 12 Apr 2021 00:00 61 - - - - - - -
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 12 Apr 2021 00:00 UTC
LevelCountryPopulation 
50-100 mmNew Caledonia11,850 

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 06:00 155 - - - - - - -
Blue 4 11 Apr 2021 12:00 108 - - - - - - -
Blue 5 11 Apr 2021 18:00 111 - - - - - - -
Blue 6 12 Apr 2021 00:00 207 -
- - - - - 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 Ho, New Caledonia. This height is estimated for 11 Apr 2021 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


Storm Surge Exposed locations

Calculation based on the bulletin of 12 Apr 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
11 Apr 2021 04:15 Ho New Caledonia  0.3
11 Apr 2021 04:15 Meomo New Caledonia  0.3
11 Apr 2021 04:15 Houailou New Caledonia  0.3
11 Apr 2021 04:15 Ouakaya New Caledonia  0.3
11 Apr 2021 04:15 Poro New Caledonia  0.3
11 Apr 2021 04:15 Kouaoua New Caledonia  0.3
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
10 Apr 2021 19:45 Prony New Caledonia  0.3
10 Apr 2021 19:45 Ouara New Caledonia  0.3
10 Apr 2021 19:45 Waho New Caledonia  0.3
10 Apr 2021 19:45 Goro 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
10 Apr 2021 19:00 Gadji New Caledonia  0.2
10 Apr 2021 19:15 Kuto New Caledonia  0.2
10 Apr 2021 19:15 Wapan New Caledonia  0.2
10 Apr 2021 19:15 Vao New Caledonia  0.2
12 Apr 2021 09:15 Benowa Australia  0.2
12 Apr 2021 09:15 Gold Coast Australia  0.2
12 Apr 2021 09:15 Moondarewa Australia  0.2
12 Apr 2021 09:15 Southport Australia  0.2
12 Apr 2021 09:15 Surfers Paradise Australia  0.2
12 Apr 2021 09:15 Broadbeach Australia  0.2
12 Apr 2021 09:15 West Burleigh Australia  0.2
12 Apr 2021 09:15 Burleigh Heads Australia  0.2
12 Apr 2021 09:15 Piggabeen Australia  0.2
12 Apr 2021 09:15 Bilambil Australia  0.2
12 Apr 2021 09:15 Palm Beach Australia  0.2
12 Apr 2021 09:15 Currumbin Australia  0.2
12 Apr 2021 09:15 Tugun Australia  0.2
12 Apr 2021 09:15 Bilinga Australia  0.2
12 Apr 2021 09:15 Tweed Heads Australia  0.2
12 Apr 2021 09:15 Coolangatta Australia  0.2
12 Apr 2021 09:15 Kingscliff-Fingal Australia  0.2
10 Apr 2021 23:45 Gebelum Australia  0.2
10 Apr 2021 23:45 Dunwich Australia  0.2
10 Apr 2021 23:45 Wallen Wallen Australia  0.2
10 Apr 2021 23:45 Kooringal Australia  0.2
10 Apr 2021 23:45 Amity Point Australia  0.2
10 Apr 2021 23:45 Point Lookout Australia  0.2
12 Apr 2021 07:15 Tumbulgum Australia  0.2
12 Apr 2021 07:15 North Tumbulgum Australia  0.2
12 Apr 2021 07:15 Terranora Australia  0.2
12 Apr 2021 07:15 Stotts Creek Australia  0.2
12 Apr 2021 07:15 Cudgen Australia  0.2
12 Apr 2021 07:15 Chinderah Australia  0.2
12 Apr 2021 07:15 Kingscliff 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
12 Apr 2021 18:00 Bargara 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
11 Apr 2021 01:00 Pemberton Australia  0.2
11 Apr 2021 01:00 Elliott Heads Australia  0.2
11 Apr 2021 00:15 Tin Can Bay Australia  0.2
11 Apr 2021 16:00 Ouasse New Caledonia  0.2
10 Apr 2021 22:15 Bohnock Australia  0.2
10 Apr 2021 22:15 Old Bar Australia  0.2
10 Apr 2021 22:15 Mitchells Island Australia  0.2
10 Apr 2021 22:15 Mitchells Australia  0.2
10 Apr 2021 22:15 Harrington Australia  0.2
10 Apr 2021 22:15 Coral Ville Australia  0.2
11 Apr 2021 03:30 Dundowran Australia  0.2
11 Apr 2021 03:30 Urraween Australia  0.2
11 Apr 2021 03:30 Point Vernon Australia  0.2
11 Apr 2021 03:30 Kawungan Australia  0.2
11 Apr 2021 03:30 Pialba Australia  0.2
11 Apr 2021 03:30 Scarness Australia  0.2
11 Apr 2021 03:30 Torquay Australia  0.2
11 Apr 2021 03:30 Urangan Australia  0.2
11 Apr 2021 03:30 Bingham Australia  0.2
10 Apr 2021 22:30 Evans Head Australia  0.2
10 Apr 2021 22:30 Broadwater Australia  0.2
10 Apr 2021 22:30 Wardell Australia  0.2
10 Apr 2021 22:30 Empire Vale Australia  0.2
11 Apr 2021 01:00 Canalpin Australia  0.1
11 Apr 2021 16:00 Ouinne New Caledonia  0.1
11 Apr 2021 03:45 Tavua Fiji  0.1
11 Apr 2021 03:45 Rabulu Fiji  0.1
11 Apr 2021 02:00 Burrum Australia  0.1
11 Apr 2021 02:00 Traviston Australia  0.1
11 Apr 2021 02:00 Toogoom Australia  0.1
12 Apr 2021 06:15 Buxton Australia  0.1
12 Apr 2021 06:15 Woodgate Australia  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
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 00:30 Laurieton Australia  0.1
11 Apr 2021 00:30 Dunbogan Australia  0.1
11 Apr 2021 00:30 North Haven Australia  0.1
11 Apr 2021 00:30 Port Macquarie Australia  0.1
10 Apr 2021 23:00 Bribie View Australia  0.1
10 Apr 2021 23:00 Donnybrook Australia  0.1
10 Apr 2021 23:00 Bribie Australia  0.1
10 Apr 2021 23:00 Caloundra Australia  0.1
10 Apr 2021 19:45 Nde New Caledonia  0.1
10 Apr 2021 19:45 Paita 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 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 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 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
11 Apr 2021 16:00 Ngoye New Caledonia  0.1
11 Apr 2021 16:00 Petit-Borindi 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 16:00 Saint Roch New Caledonia  0.1
11 Apr 2021 04:15 Panane New Caledonia  0.1
11 Apr 2021 04:15 Mouane New Caledonia  0.1
11 Apr 2021 04:15 Ono New Caledonia  0.1
11 Apr 2021 04:15 Wala New Caledonia  0.1
11 Apr 2021 04:15 Bweo New Caledonia  0.1
10 Apr 2021 22:30 Stuarts Point Australia  0.1
10 Apr 2021 22:30 Kinchela Creek Australia  0.1
10 Apr 2021 22:30 Pelican Island Australia  0.1
10 Apr 2021 22:30 Jerseyville Australia  0.1
10 Apr 2021 22:30 Cooloondurri Australia  0.1
10 Apr 2021 22:30 Arakoon Australia  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 05:45 Sandon Bluffs Australia  0.1
10 Apr 2021 22:30 Bulwer Australia  0.1
10 Apr 2021 22:30 Cowan Cowan Australia  0.1
10 Apr 2021 22:30 Tangalooma Australia  0.1
11 Apr 2021 06:15 Mamie New Caledonia  0.1
11 Apr 2021 06:15 Yate-Village New Caledonia  0.1
12 Apr 2021 22:45 Saint-Gabriel New Caledonia  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
10 Apr 2021 22:30 Mullumbimby Australia  0.1
10 Apr 2021 22:30 Yelgun Australia  0.1
10 Apr 2021 22:30 Duranbah Australia  0.1
10 Apr 2021 22:30 Sleepy Hollow Australia  0.1
10 Apr 2021 22:30 Billinudgel Australia  0.1
10 Apr 2021 22:30 Warwick Park Australia  0.1
10 Apr 2021 22:30 Brunswick Heads Australia  0.1
10 Apr 2021 22:30 Brunswick Australia  0.1
10 Apr 2021 22:30 Round Mountain Australia  0.1
10 Apr 2021 22:30 New Brighton Australia  0.1
10 Apr 2021 22:30 Lower Cudgera 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
10 Apr 2021 22:30 Tyagarah Australia  0.1
11 Apr 2021 04:00 Potnarvin Vanuatu  0.1
11 Apr 2021 04:00 Ipota Vanuatu  0.1
10 Apr 2021 22:30 Ewingsdale Australia  0.1
10 Apr 2021 22:30 Byron Bay Australia  0.1
11 Apr 2021 04:15 Pairome New Caledonia  0.1
10 Apr 2021 22:15 Woolgoolga Australia  0.1
12 Apr 2021 12:30 Tavua Fiji  0.1
12 Apr 2021 12:30 Solevu Fiji  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
12 Apr 2021 11:00 Wynnum Australia  0.1
12 Apr 2021 11:00 Manly Australia  0.1
12 Apr 2021 11:00 Capalaba Australia  0.1
12 Apr 2021 11:00 Birkdale Australia  0.1
12 Apr 2021 11:00 Wellington Point Australia  0.1
12 Apr 2021 11:00 Ormiston Australia  0.1
12 Apr 2021 11:00 Thornlands Australia  0.1
12 Apr 2021 11:00 Cleveland Australia  0.1
12 Apr 2021 11:00 Alberton Australia  0.1
12 Apr 2021 11:00 Carbrook Australia  0.1
12 Apr 2021 11:00 Raby Bay Australia  0.1
12 Apr 2021 11:00 Gilberton 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
10 Apr 2021 22:30 Harwood Australia  0.1
10 Apr 2021 22:30 Chatsworth Island Australia  0.1
10 Apr 2021 22:30 Chatsworth Australia  0.1
10 Apr 2021 22:30 Woombah Australia  0.1
10 Apr 2021 22:30 Palmers Island Australia  0.1
10 Apr 2021 22:30 Iluka Australia  0.1
12 Apr 2021 12:45 Nalauwaki Fiji  0.1
11 Apr 2021 13:15 Namaka Fiji  0.1