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 ECMWF
Exposed countries
Exposed population No people in Category 1 or higher
Maximum wind speed 83 km/h
Maximum storm surge 0.2 m (12 Apr 00:15 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
ECMWF Current 83 km/h 0.2 m 223 mm 0.5
ECMWF Overall 83 km/h 0.3 m 507 mm 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

83 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 00:00 72 -
- - - - - New Caledonia
GREEN 2 10 Apr 2021 12:00 79 -
- - - - - New Caledonia
GREEN 3 11 Apr 2021 00:00 83 - - - - - - -
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 00:00 UTC
LevelCountryPopulation 
250-500 mmNew Caledonia499 
100-250 mmNew Caledonia45,659 
50-100 mmVanuatu, New Caledonia183,408
+
Vanuatu1,567 
New Caledonia181,841 

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 00:00 204 7 thousand
- - - - New Caledonia
Blue 2 10 Apr 2021 12:00 175 - - - - - - -
Blue 3 11 Apr 2021 00:00 337 50 thousand
- - - Vanuatu, 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 Avondale, Australia. This height is estimated for 12 Apr 2021 00:15 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)
12 Apr 2021 00:15 Avondale Australia  0.2
12 Apr 2021 00:15 Moore Park Australia  0.2
12 Apr 2021 00:15 Fairymead Australia  0.2
12 Apr 2021 00:15 Port Bundaberg Australia  0.2
12 Apr 2021 00:15 The Grange Australia  0.2
12 Apr 2021 00:15 Burnett Heads Australia  0.2
12 Apr 2021 23:15 Lautoka Fiji  0.2
12 Apr 2021 23:15 Nailanga Fiji  0.2
12 Apr 2021 23:15 Sorokoba Fiji  0.2
12 Apr 2021 23:15 Ba Fiji  0.2
12 Apr 2021 23:15 Natunuka Fiji  0.2
12 Apr 2021 16:30 Poindimie New Caledonia  0.2
12 Apr 2021 16:30 Ometteux New Caledonia  0.2
12 Apr 2021 16:30 Ponerihouen New Caledonia  0.2
12 Apr 2021 16:30 Bayes New Caledonia  0.2
12 Apr 2021 16:30 Mou New Caledonia  0.2
12 Apr 2021 16:30 Moneo New Caledonia  0.2
12 Apr 2021 16:30 Ho New Caledonia  0.2
12 Apr 2021 16:30 Meomo New Caledonia  0.2
11 Apr 2021 07:45 Elliott Heads Australia  0.2
11 Apr 2021 07:45 Buxton Australia  0.2
11 Apr 2021 07:45 Woodgate Australia  0.2
11 Apr 2021 07:45 Burrum Australia  0.2
11 Apr 2021 07:45 Traviston Australia  0.2
12 Apr 2021 00:15 Bargara Australia  0.2
11 Apr 2021 03:45 Nde New Caledonia  0.2
11 Apr 2021 03:45 Paita New Caledonia  0.2
11 Apr 2021 03:45 Nouville New Caledonia  0.2
11 Apr 2021 03:45 Noumea New Caledonia  0.2
11 Apr 2021 03:45 Dumbea New Caledonia  0.2
11 Apr 2021 03:45 Comm. du Mont-Dore New Caledonia  0.2
11 Apr 2021 03:45 Saint-Louis New Caledonia  0.2
11 Apr 2021 00:45 Valla Australia  0.2
11 Apr 2021 00:45 Stuarts Point Australia  0.2
11 Apr 2021 00:45 Nambucca Australia  0.2
11 Apr 2021 00:45 Nambucca Australia  0.2
11 Apr 2021 00:45 Cooloondurri Australia  0.2
11 Apr 2021 00:45 Arakoon Australia  0.2
11 Apr 2021 03:30 Tavua Fiji  0.2
11 Apr 2021 03:30 Rabulu Fiji  0.2
13 Apr 2021 02:15 Plum New Caledonia  0.1
12 Apr 2021 21:45 Bouloupari New Caledonia  0.1
11 Apr 2021 00:00 Kouaoua New Caledonia  0.1
11 Apr 2021 00:00 Ouasse New Caledonia  0.1
11 Apr 2021 08:30 West Burleigh Australia  0.1
11 Apr 2021 08:30 Tumbulgum Australia  0.1
11 Apr 2021 08:30 Piggabeen Australia  0.1
11 Apr 2021 08:30 Bilambil Australia  0.1
11 Apr 2021 08:30 North Tumbulgum Australia  0.1
11 Apr 2021 08:30 Palm Beach Australia  0.1
11 Apr 2021 08:30 Currumbin Australia  0.1
11 Apr 2021 08:30 Tugun Australia  0.1
11 Apr 2021 08:30 Terranora Australia  0.1
11 Apr 2021 08:30 Bilinga Australia  0.1
11 Apr 2021 08:30 Stotts Creek Australia  0.1
11 Apr 2021 08:30 Duranbah Australia  0.1
11 Apr 2021 08:30 Sleepy Hollow Australia  0.1
11 Apr 2021 08:30 Warwick Park Australia  0.1
11 Apr 2021 08:30 Tweed Heads Australia  0.1
11 Apr 2021 08:30 Coolangatta Australia  0.1
11 Apr 2021 08:30 Kingscliff-Fingal Australia  0.1
11 Apr 2021 08:30 Round Mountain Australia  0.1
11 Apr 2021 08:30 Cudgen Australia  0.1
11 Apr 2021 08:30 Chinderah Australia  0.1
11 Apr 2021 08:30 Lower Cudgera Australia  0.1
11 Apr 2021 08:30 Kingscliff Australia  0.1
11 Apr 2021 07:30 Pemberton Australia  0.1
11 Apr 2021 05:45 Tin Can Bay Australia  0.1
11 Apr 2021 20:30 Tiabet New Caledonia  0.1
11 Apr 2021 20:30 Poum-Plage New Caledonia  0.1
12 Apr 2021 20:15 Prony New Caledonia  0.1
12 Apr 2021 20:15 Ouara New Caledonia  0.1
12 Apr 2021 20:15 Waho New Caledonia  0.1
12 Apr 2021 20:15 Goro New Caledonia  0.1
11 Apr 2021 10:15 Benowa Australia  0.1
11 Apr 2021 10:15 Gold Coast Australia  0.1
11 Apr 2021 10:15 Southport Australia  0.1
11 Apr 2021 10:15 Surfers Paradise Australia  0.1
11 Apr 2021 10:15 Broadbeach Australia  0.1
11 Apr 2021 10:15 Burleigh Heads Australia  0.1
11 Apr 2021 05:45 Kinchela Creek Australia  0.1
11 Apr 2021 05:45 Pelican Island Australia  0.1
11 Apr 2021 05:45 Jerseyville Australia  0.1
12 Apr 2021 14:15 Paola New Caledonia  0.1
12 Apr 2021 14:15 Vieux Tuho New Caledonia  0.1
12 Apr 2021 14:15 Touho New Caledonia  0.1
12 Apr 2021 14:15 Kokengone New Caledonia  0.1
13 Apr 2021 22:45 Namaka Fiji  0.1
13 Apr 2021 01:15 Houailou New Caledonia  0.1
13 Apr 2021 01:15 Ouakaya New Caledonia  0.1
13 Apr 2021 01:15 Poro New Caledonia  0.1
11 Apr 2021 18:00 Kuine New Caledonia  0.1
11 Apr 2021 18:00 Nakety New Caledonia  0.1
11 Apr 2021 18:00 Thio New Caledonia  0.1
11 Apr 2021 08:00 Toogoom Australia  0.1
11 Apr 2021 08:00 Dundowran Australia  0.1
11 Apr 2021 08:00 Urraween Australia  0.1
11 Apr 2021 08:00 Point Vernon Australia  0.1
11 Apr 2021 08:00 Kawungan Australia  0.1
11 Apr 2021 08:00 Pialba Australia  0.1
11 Apr 2021 08:00 Scarness Australia  0.1
11 Apr 2021 08:00 Torquay Australia  0.1
11 Apr 2021 08:00 Urangan Australia  0.1
11 Apr 2021 00:15 Bingham Australia  0.1
11 Apr 2021 08:30 Moondarewa Australia  0.1
12 Apr 2021 22:45 Canala New Caledonia  0.1
11 Apr 2021 17:15 Ouanache New Caledonia  0.1
13 Apr 2021 22:45 Nadi Fiji  0.1
11 Apr 2021 09:45 Mullumbimby Australia  0.1
11 Apr 2021 09:45 Yelgun Australia  0.1
11 Apr 2021 09:45 Billinudgel Australia  0.1
11 Apr 2021 09:45 Brunswick Heads Australia  0.1
11 Apr 2021 09:45 Brunswick Australia  0.1
11 Apr 2021 09:45 New Brighton Australia  0.1
13 Apr 2021 22:45 Solevu Fiji  0.1
13 Apr 2021 22:45 Momi Fiji  0.1
13 Apr 2021 22:30 Tavua Fiji  0.1
12 Apr 2021 21:15 Tomo New Caledonia  0.1
11 Apr 2021 06:00 Moonee Beach Australia  0.1
11 Apr 2021 06:00 Upper Corindi Australia  0.1
11 Apr 2021 06:00 Woolgoolga Australia  0.1
11 Apr 2021 06:00 Woogoolga Australia  0.1
11 Apr 2021 06:00 Corindi Australia  0.1
11 Apr 2021 06:00 Red Rock Australia  0.1
11 Apr 2021 05:15 Tewantin Australia  0.1
11 Apr 2021 05:15 Noosaville Australia  0.1
11 Apr 2021 05:15 Coolum Australia  0.1
11 Apr 2021 05:15 Maroochydore Australia  0.1
11 Apr 2021 05:15 Coolum Beach Australia  0.1
11 Apr 2021 05:15 Noosa Heads Australia  0.1
11 Apr 2021 05:15 Mooloolaba Australia  0.1