Overall Green alert Tropical Cyclone for TWENTYEIGH-21
in New Caledonia
11 Apr 2021 18 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 79 km/h
Maximum storm surge 0.3 m (11 Apr 04:30 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
HWRF Current 79 km/h 0.3 m 198 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)

TOP

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 18:00 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 68 - - - - - - -
GREEN 3 11 Apr 2021 06:00 72 - - - - - - -
GREEN 4 11 Apr 2021 12:00 61 - - - - - - -
GREEN 5 11 Apr 2021 18:00 61 - - - - - - -
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

No exposed population (greater than 50mm) based on the bulletin of 11 Apr 2021 18:00 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 00:00 154 - - - - - - -
Blue 3 11 Apr 2021 06:00 87 - - - - - - -
Blue 4 11 Apr 2021 12:00 75 - - - - - - -
Blue 5 11 Apr 2021 18:00 87 - - - - - - -




Impact estimation for the next 72h
TOP

StormSurge

0.3 m

The maximum Storm surge height is  0.3m in Ho, New Caledonia. This height is estimated for 11 Apr 2021 04:30 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.

Storm Surge Exposed population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 11 Apr 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
11 Apr 2021 04:30 Ho New Caledonia  0.3
11 Apr 2021 04:30 Meomo New Caledonia  0.3
11 Apr 2021 04:30 Houailou New Caledonia  0.3
11 Apr 2021 04:30 Ouakaya New Caledonia  0.3
11 Apr 2021 04:30 Poro New Caledonia  0.3
11 Apr 2021 04:30 Kouaoua New Caledonia  0.3
11 Apr 2021 12:30 Benowa Australia  0.2
11 Apr 2021 12:30 Gold Coast Australia  0.2
11 Apr 2021 12:30 Moondarewa Australia  0.2
11 Apr 2021 12:30 Southport Australia  0.2
11 Apr 2021 12:30 Surfers Paradise Australia  0.2
11 Apr 2021 12:30 Broadbeach Australia  0.2
11 Apr 2021 12:30 West Burleigh Australia  0.2
11 Apr 2021 12:30 Burleigh Heads Australia  0.2
11 Apr 2021 12:30 Piggabeen Australia  0.2
11 Apr 2021 12:30 Bilambil Australia  0.2
11 Apr 2021 12:30 Palm Beach Australia  0.2
11 Apr 2021 12:30 Currumbin Australia  0.2
11 Apr 2021 12:30 Tugun Australia  0.2
11 Apr 2021 12:30 Bilinga Australia  0.2
11 Apr 2021 12:30 Tweed Heads Australia  0.2
11 Apr 2021 12:30 Coolangatta Australia  0.2
11 Apr 2021 12:30 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
10 Apr 2021 19:15 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
10 Apr 2021 19:45 Prony New Caledonia  0.2
10 Apr 2021 19:45 Ouara New Caledonia  0.2
10 Apr 2021 19:45 Waho New Caledonia  0.2
10 Apr 2021 19:45 Goro 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 14:45 Ouasse New Caledonia  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
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
12 Apr 2021 20:00 Canala New Caledonia  0.2
12 Apr 2021 20:00 Kuine New Caledonia  0.2
12 Apr 2021 20:00 Nakety New Caledonia  0.2
11 Apr 2021 18:30 Nailanga Fiji  0.2
11 Apr 2021 18:30 Sorokoba Fiji  0.2
11 Apr 2021 18:30 Ba Fiji  0.2
11 Apr 2021 18:30 Natunuka Fiji  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
10 Apr 2021 22:00 Nde New Caledonia  0.2
10 Apr 2021 22:00 Paita New Caledonia  0.2
10 Apr 2021 22:00 Nouville New Caledonia  0.2
10 Apr 2021 22:00 Noumea New Caledonia  0.2
10 Apr 2021 22:00 Dumbea New Caledonia  0.2
10 Apr 2021 22:00 Comm. du Mont-Dore New Caledonia  0.2
10 Apr 2021 22:00 Saint-Louis New Caledonia  0.2
11 Apr 2021 23:45 Thio New Caledonia  0.2
11 Apr 2021 23:45 Saint-Gabriel New Caledonia  0.2
11 Apr 2021 23:45 Saint Roch New Caledonia  0.2
11 Apr 2021 04:30 Fairymead Australia  0.2
11 Apr 2021 04:30 Burnett Heads Australia  0.2
12 Apr 2021 07:30 Coomera Australia  0.2
12 Apr 2021 07:30 Norwell Australia  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
12 Apr 2021 12:15 Lautoka Fiji  0.2
11 Apr 2021 21:00 Panane New Caledonia  0.2
11 Apr 2021 21:00 Mouane New Caledonia  0.2
11 Apr 2021 21:00 Ono New Caledonia  0.2
11 Apr 2021 21:00 Wala New Caledonia  0.2
11 Apr 2021 21:00 Bweo New Caledonia  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
10 Apr 2021 20:45 Plum New Caledonia  0.1
12 Apr 2021 02:45 Tavua Fiji  0.1
12 Apr 2021 02:45 Rabulu Fiji  0.1
10 Apr 2021 22:30 Evans Head Australia  0.1
10 Apr 2021 22:30 Broadwater Australia  0.1
10 Apr 2021 22:30 Wardell Australia  0.1
10 Apr 2021 22:30 Empire Vale Australia  0.1
11 Apr 2021 00:15 Tin Can Bay 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
12 Apr 2021 11:45 Ouinne New Caledonia  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 Steiglitz Australia  0.1
11 Apr 2021 10:15 Canalpin 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
12 Apr 2021 11:45 Mamie New Caledonia  0.1
12 Apr 2021 11:45 Yate-Village New Caledonia  0.1
12 Apr 2021 03:30 Potnarvin Vanuatu  0.1
12 Apr 2021 03:30 Ipota Vanuatu  0.1
11 Apr 2021 02:00 Buxton Australia  0.1
11 Apr 2021 02:00 Woodgate Australia  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
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 19:15 Ngoye New Caledonia  0.1
10 Apr 2021 19:15 Petit-Borindi New Caledonia  0.1
13 Apr 2021 17:30 Namaka Fiji  0.1
12 Apr 2021 02:15 Matacawalevu Fiji  0.1
12 Apr 2021 02:15 Sisili Fiji  0.1
12 Apr 2021 02:15 Nacula Fiji  0.1
12 Apr 2021 02:15 Navotua Fiji  0.1
12 Apr 2021 02:15 Tamusua Fiji  0.1
12 Apr 2021 02:15 Teci Fiji  0.1
12 Apr 2021 02:15 Mbukama Fiji  0.1
11 Apr 2021 10:45 Raleigh Australia  0.1
11 Apr 2021 10:45 Urunga Australia  0.1
11 Apr 2021 10:45 Repton Australia  0.1
11 Apr 2021 10:45 Bonville Australia  0.1
11 Apr 2021 10:45 Mylestom Australia  0.1
11 Apr 2021 10:45 Boambee Australia  0.1
11 Apr 2021 10:45 Sawtell Australia  0.1
11 Apr 2021 10:45 Coffs Harbour Australia  0.1
11 Apr 2021 10:45 Kororo Basin Australia  0.1
11 Apr 2021 10:45 Moonee Beach Australia  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 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
11 Apr 2021 01:15 Tiabet New Caledonia  0.1
11 Apr 2021 01:15 Poum-Plage New Caledonia  0.1
12 Apr 2021 17:15 Ometteux New Caledonia  0.1
12 Apr 2021 17:15 Ponerihouen New Caledonia  0.1
12 Apr 2021 17:15 Mou New Caledonia  0.1
12 Apr 2021 17:15 Moneo New Caledonia  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
11 Apr 2021 05:45 Sandon Bluffs Australia  0.1
10 Apr 2021 22:15 Woolgoolga Australia  0.1
11 Apr 2021 01:30 Kaala-Gomen New Caledonia  0.1
11 Apr 2021 01:30 Ouaco New Caledonia  0.1
14 Apr 2021 13:30 Wynnum Australia  0.1
14 Apr 2021 13:30 Manly Australia  0.1
14 Apr 2021 13:30 Capalaba Australia  0.1
14 Apr 2021 13:30 Birkdale Australia  0.1
14 Apr 2021 13:30 Wellington Point Australia  0.1
14 Apr 2021 13:30 Ormiston Australia  0.1
14 Apr 2021 13:30 Thornlands Australia  0.1
14 Apr 2021 13:30 Cleveland Australia  0.1
14 Apr 2021 13:30 Alberton Australia  0.1
14 Apr 2021 13:30 Carbrook Australia  0.1
14 Apr 2021 13:30 Raby Bay Australia  0.1
14 Apr 2021 13:30 Gilberton Australia  0.1
12 Apr 2021 19:45 Segond Vanuatu  0.1
12 Apr 2021 19:45 Luganville Vanuatu  0.1
12 Apr 2021 19:45 Asavagas Vanuatu  0.1
12 Apr 2021 19:45 Palikoulo Vanuatu  0.1
11 Apr 2021 01:30 Poum New Caledonia  0.1
12 Apr 2021 04:00 Tavua Fiji  0.1
12 Apr 2021 04:00 Solevu Fiji  0.1
12 Apr 2021 03:45 Momi Fiji  0.1
12 Apr 2021 03:45 Nadi 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
11 Apr 2021 20:45 Tewantin Australia  0.1
11 Apr 2021 20:45 Noosaville Australia  0.1
11 Apr 2021 20:45 Noosa Heads Australia  0.1
12 Apr 2021 09:00 Mouly New Caledonia  0.1
12 Apr 2021 09:00 Lekia New Caledonia  0.1
12 Apr 2021 09:00 Fayaoue New Caledonia  0.1
12 Apr 2021 09:00 Wadrilla New Caledonia  0.1
12 Apr 2021 09:00 Ognahu New Caledonia  0.1
12 Apr 2021 09:00 Wegnec St-Joseph New Caledonia  0.1
12 Apr 2021 09:00 Ognat New Caledonia  0.1
10 Apr 2021 22:30 Cowan Cowan Australia  0.1
10 Apr 2021 22:30 Tangalooma Australia  0.1