Overall Green alert Tropical Cyclone for TWENTYEIGH-21
in New Caledonia
11 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 HWRF
Exposed countries
Exposed population No people in Category 1 or higher
Maximum wind speed 68 km/h
Maximum storm surge 0.3 m (11 Apr 16:15 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
HWRF Current 68 km/h 0.3 m 154 mm 0.5
HWRF Overall 79 km/h 0.3 m 198 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 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 - - - - - - -
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

No exposed population (greater than 50mm) based on the bulletin of 11 Apr 2021 00:00 UTC

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 18:00 195 - - - - - - -
Blue 2 11 Apr 2021 00:00 202 - - - - - - -




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 16:15 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 11 Apr 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
11 Apr 2021 16:15 Ho New Caledonia  0.3
11 Apr 2021 16:15 Meomo New Caledonia  0.3
11 Apr 2021 16:15 Houailou New Caledonia  0.3
11 Apr 2021 16:15 Ouakaya New Caledonia  0.3
11 Apr 2021 16:15 Poro New Caledonia  0.3
11 Apr 2021 16:15 Kouaoua New Caledonia  0.3
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 06:45 Ouanache New Caledonia  0.2
11 Apr 2021 06:45 Paola New Caledonia  0.2
11 Apr 2021 06:45 Vieux Tuho New Caledonia  0.2
11 Apr 2021 06:45 Touho New Caledonia  0.2
11 Apr 2021 06:45 Kokengone New Caledonia  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 14:00 Tumbulgum Australia  0.2
11 Apr 2021 14:00 North Tumbulgum Australia  0.2
11 Apr 2021 14:00 Terranora Australia  0.2
11 Apr 2021 14:00 Stotts Creek Australia  0.2
11 Apr 2021 14:00 Cudgen Australia  0.2
11 Apr 2021 14:00 Chinderah Australia  0.2
11 Apr 2021 14:00 Kingscliff Australia  0.2
11 Apr 2021 09:45 Avondale Australia  0.2
11 Apr 2021 09:45 Moore Park Australia  0.2
11 Apr 2021 01:00 Gebelum Australia  0.2
11 Apr 2021 01:00 Dunwich Australia  0.2
11 Apr 2021 01:00 Wallen Wallen Australia  0.2
11 Apr 2021 01:00 Kooringal Australia  0.2
11 Apr 2021 01:00 Amity Point Australia  0.2
11 Apr 2021 01:00 Point Lookout Australia  0.2
11 Apr 2021 11:15 Port Bundaberg Australia  0.2
11 Apr 2021 11:15 The Grange Australia  0.2
11 Apr 2021 11:15 Pemberton Australia  0.2
11 Apr 2021 11:15 Bargara Australia  0.2
11 Apr 2021 11:15 Elliott Heads Australia  0.2
12 Apr 2021 06:00 Ouasse New Caledonia  0.2
11 Apr 2021 04:30 Fairymead Australia  0.2
11 Apr 2021 04:30 Burnett Heads Australia  0.2
11 Apr 2021 03:30 Dundowran Australia  0.1
11 Apr 2021 03:30 Urraween Australia  0.1
11 Apr 2021 03:30 Point Vernon Australia  0.1
11 Apr 2021 03:30 Kawungan Australia  0.1
11 Apr 2021 03:30 Pialba Australia  0.1
11 Apr 2021 03:30 Scarness Australia  0.1
11 Apr 2021 03:30 Torquay Australia  0.1
11 Apr 2021 03:30 Urangan Australia  0.1
11 Apr 2021 03:30 Bingham Australia  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
11 Apr 2021 00:15 Tin Can Bay Australia  0.1
12 Apr 2021 21:30 Lautoka Fiji  0.1
12 Apr 2021 21:30 Nailanga Fiji  0.1
12 Apr 2021 21:30 Sorokoba Fiji  0.1
12 Apr 2021 21:30 Ba Fiji  0.1
12 Apr 2021 21:30 Natunuka Fiji  0.1
11 Apr 2021 10:15 Redland Bay Australia  0.1
11 Apr 2021 10:15 Victoria Point Australia  0.1
11 Apr 2021 10:15 Woongoolba Australia  0.1
11 Apr 2021 10:15 Norwell Australia  0.1
11 Apr 2021 10:15 Steiglitz Australia  0.1
11 Apr 2021 10:15 Canalpin Australia  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 08:45 Coolum Australia  0.1
11 Apr 2021 08:45 Maroochydore Australia  0.1
11 Apr 2021 08:45 Coolum Beach Australia  0.1
11 Apr 2021 08:45 Mooloolaba Australia  0.1
11 Apr 2021 08:45 Caloundra Australia  0.1
11 Apr 2021 08:30 Coomera 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
11 Apr 2021 00:45 Bohnock Australia  0.1
11 Apr 2021 00:45 Old Bar Australia  0.1
11 Apr 2021 00:45 Mitchells Island Australia  0.1
11 Apr 2021 00:45 Mitchells Australia  0.1
11 Apr 2021 00:45 Harrington Australia  0.1
11 Apr 2021 00:45 Coral Ville Australia  0.1
11 Apr 2021 10:45 Evans Head Australia  0.1
11 Apr 2021 10:45 Broadwater Australia  0.1
11 Apr 2021 10:45 Wardell Australia  0.1
11 Apr 2021 10:45 Empire Vale Australia  0.1
11 Apr 2021 01:15 Saint-Denis New Caledonia  0.1
11 Apr 2021 01:15 Poindimie New Caledonia  0.1
11 Apr 2021 01:15 Bayes New Caledonia  0.1
11 Apr 2021 02:00 Buxton Australia  0.1
11 Apr 2021 02:00 Woodgate Australia  0.1
11 Apr 2021 01:15 Stuarts Point Australia  0.1
11 Apr 2021 01:15 Kinchela Creek Australia  0.1
11 Apr 2021 01:15 Pelican Island Australia  0.1
11 Apr 2021 01:15 Jerseyville Australia  0.1
11 Apr 2021 01:15 Cooloondurri Australia  0.1
11 Apr 2021 01:15 Arakoon Australia  0.1
11 Apr 2021 16:00 Ometteux New Caledonia  0.1
11 Apr 2021 16:00 Ponerihouen New Caledonia  0.1
11 Apr 2021 16:00 Mou New Caledonia  0.1
11 Apr 2021 16:00 Moneo New Caledonia  0.1
11 Apr 2021 07:00 Gadji New Caledonia  0.1
11 Apr 2021 07:00 Kuto New Caledonia  0.1
11 Apr 2021 07:00 Wapan New Caledonia  0.1
11 Apr 2021 07:00 Vao New Caledonia  0.1
11 Apr 2021 01:15 Ouara New Caledonia  0.1
11 Apr 2021 01:00 Tipindje New Caledonia  0.1
11 Apr 2021 01:00 Pindache New Caledonia  0.1
11 Apr 2021 00:15 Valla Australia  0.1
11 Apr 2021 00:15 Nambucca Australia  0.1
11 Apr 2021 00:15 Nambucca Australia  0.1
13 Apr 2021 00:15 Nouville New Caledonia  0.1
13 Apr 2021 00:15 Noumea New Caledonia  0.1
13 Apr 2021 00:15 Dumbea New Caledonia  0.1
13 Apr 2021 00:15 Comm. du Mont-Dore New Caledonia  0.1
13 Apr 2021 00:15 Saint-Louis New Caledonia  0.1
13 Apr 2021 00:15 Plum New Caledonia  0.1
13 Apr 2021 00:45 Prony 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 05:45 Sandon Bluffs Australia  0.1
11 Apr 2021 16:00 Saint Roch 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 01:15 Balaide New Caledonia  0.1
11 Apr 2021 01:15 Saint-Paul New Caledonia  0.1
11 Apr 2021 01:15 Pouebo New Caledonia  0.1
12 Apr 2021 22:45 Mamie New Caledonia  0.1
12 Apr 2021 22:45 Yate-Village New Caledonia  0.1
11 Apr 2021 01:30 Kaala-Gomen New Caledonia  0.1
11 Apr 2021 01:30 Ouaco New Caledonia  0.1
11 Apr 2021 01:30 Poum New Caledonia  0.1
11 Apr 2021 10:00 Waho New Caledonia  0.1
11 Apr 2021 10:00 Goro New Caledonia  0.1
11 Apr 2021 08:45 Tewantin Australia  0.1
11 Apr 2021 08:45 Noosaville Australia  0.1
11 Apr 2021 08:45 Noosa Heads Australia  0.1
11 Apr 2021 16:15 Nde New Caledonia  0.1
11 Apr 2021 16:15 Paita New Caledonia  0.1