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 GFS
Exposed countries
Exposed population No people in Category 1 or higher
Maximum wind speed 65 km/h
Maximum storm surge 0.2 m (11 Apr 18:00 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 0.2 m 111 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 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 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 - - - - - - -
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 18:00 UTC
LevelCountryPopulation 
50-100 mmNew Caledonia14,292 

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 18:00 122 -
- - - - - New Caledonia




Impact estimation for the next 72h
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StormSurge

0.2 m

The maximum Storm surge height is  0.2m in Ho, New Caledonia. This height is estimated for 11 Apr 2021 18:00 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 18:00 Ho New Caledonia  0.2
11 Apr 2021 18:00 Meomo New Caledonia  0.2
11 Apr 2021 18:00 Houailou New Caledonia  0.2
11 Apr 2021 18:00 Ouakaya New Caledonia  0.2
11 Apr 2021 18:00 Poro New Caledonia  0.2
11 Apr 2021 18:00 Kouaoua New Caledonia  0.2
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
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
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
12 Apr 2021 18:00 Bargara Australia  0.2
12 Apr 2021 21:30 Lautoka Fiji  0.2
12 Apr 2021 21:30 Nailanga Fiji  0.2
12 Apr 2021 21:30 Sorokoba Fiji  0.2
12 Apr 2021 21:30 Ba Fiji  0.2
12 Apr 2021 21:30 Natunuka Fiji  0.2
12 Apr 2021 06:00 Ouasse New Caledonia  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
12 Apr 2021 02:15 Ouanache New Caledonia  0.1
12 Apr 2021 02:15 Paola New Caledonia  0.1
12 Apr 2021 02:15 Vieux Tuho New Caledonia  0.1
12 Apr 2021 02:15 Touho New Caledonia  0.1
12 Apr 2021 02:15 Kokengone New Caledonia  0.1
12 Apr 2021 05:45 Kuine New Caledonia  0.1
12 Apr 2021 05:45 Nakety New Caledonia  0.1
12 Apr 2021 05:45 Thio 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 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 Norwell Australia  0.1
12 Apr 2021 07:15 Steiglitz Australia  0.1
12 Apr 2021 07:15 Dunwich Australia  0.1
12 Apr 2021 07:15 Wallen Wallen Australia  0.1
12 Apr 2021 07:15 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
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
12 Apr 2021 07:00 Gebelum Australia  0.1
12 Apr 2021 07:00 Kooringal Australia  0.1
12 Apr 2021 07:00 Amity Point Australia  0.1
12 Apr 2021 07:00 Point Lookout Australia  0.1
12 Apr 2021 07:30 Coomera Australia  0.1
11 Apr 2021 20:45 Saint-Denis New Caledonia  0.1
11 Apr 2021 20:45 Poindimie New Caledonia  0.1
11 Apr 2021 20:45 Bayes New Caledonia  0.1
11 Apr 2021 22:45 Urraween Australia  0.1
11 Apr 2021 22:45 Kawungan Australia  0.1
11 Apr 2021 22:45 Pialba Australia  0.1
11 Apr 2021 22:45 Scarness Australia  0.1
11 Apr 2021 22:45 Torquay Australia  0.1
11 Apr 2021 22:45 Urangan Australia  0.1
11 Apr 2021 22:45 Bingham Australia  0.1
13 Apr 2021 01:45 Prony New Caledonia  0.1
13 Apr 2021 01:45 Ouara New Caledonia  0.1
13 Apr 2021 01:45 Waho New Caledonia  0.1
13 Apr 2021 01:45 Goro New Caledonia  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 00:15 Gadji New Caledonia  0.1
12 Apr 2021 00:15 Kuto New Caledonia  0.1
12 Apr 2021 00:15 Wapan New Caledonia  0.1
12 Apr 2021 00:15 Vao New Caledonia  0.1
13 Apr 2021 00:30 Namaka Fiji  0.1
12 Apr 2021 12:45 Nalauwaki Fiji  0.1
12 Apr 2021 12:45 Tavua Fiji  0.1
12 Apr 2021 12:45 Solevu Fiji  0.1
11 Apr 2021 20:00 Tin Can Bay Australia  0.1
12 Apr 2021 21:15 Soso Fiji  0.1
12 Apr 2021 21:15 Somosomo 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 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 11:30 Saint-Gabriel New Caledonia  0.1
12 Apr 2021 11:30 Saint Roch New Caledonia  0.1
11 Apr 2021 21:00 Nde New Caledonia  0.1
11 Apr 2021 21:00 Paita New Caledonia  0.1
13 Apr 2021 05:00 Mamie New Caledonia  0.1
13 Apr 2021 05:00 Yate-Village New Caledonia  0.1