Overall Green alert Tropical Cyclone for SEROJA-21
in Australia, Indonesia

Impact

Tropical Cyclone SEROJA-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source HWRF
Exposed countries Australia
Exposed population 4 thousand in Category 1 or higher
Maximum wind speed 119 km/h
Maximum storm surge 2.1 m (11 Apr 10:00 UTC)
Vulnerability Low (Australia)

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 119 km/h 2.1 m 134 mm 0.5
HWRF Overall 166 km/h 1.6 m 787 mm 0.5

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

Wind

166 km/h

Up to 4 thousand in Category 1 strength or higher (see SSHS)



Wind exposed population - AoIs

Estimations based on the bulletin of 09 Apr 2021 18:00 UTC
CategoryCountryPopulation 
CAT. 1Australia3959 
Tropical StormAustralia80111 

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert 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 04 Apr 2021 12:00 83 -
- - - - - Indonesia
GREEN 2 04 Apr 2021 18:00 108 -
- - - - - Indonesia
GREEN 3 05 Apr 2021 00:00 115 -
- - - - - Indonesia
GREEN 4 05 Apr 2021 06:00 115 -
- - - - - Indonesia
GREEN 5 05 Apr 2021 12:00 104 -
- - - - - Indonesia
GREEN 6 05 Apr 2021 18:00 108 -
- - - - - Indonesia
GREEN 7 06 Apr 2021 00:00 162 -
- - - - - Indonesia
GREEN 8 06 Apr 2021 06:00 94 - - - - - - -
GREEN 9 06 Apr 2021 12:00 108 - - - - - - -
GREEN 10 06 Apr 2021 18:00 137 - - - - - - -
GREEN 11 07 Apr 2021 00:00 104 - - - - - - -
GREEN 12 07 Apr 2021 06:00 119 - - - - - - -
GREEN 13 07 Apr 2021 12:00 97 - - - - - - -
GREEN 14 07 Apr 2021 18:00 86 - - - - - - -
GREEN 15 08 Apr 2021 00:00 115 - - - - - - -
GREEN 16 08 Apr 2021 06:00 108 - - - - - - -
GREEN 17 08 Apr 2021 12:00 119 - - - - - - -
GREEN 18 08 Apr 2021 18:00 97 - - - - - - -
GREEN 19 09 Apr 2021 00:00 83 - - - - - - -
GREEN 20 09 Apr 2021 06:00 90 - - - - - - -
GREEN 21 09 Apr 2021 12:00 101 - - - - - - -
GREEN 22 09 Apr 2021 18:00 166 4 thousand
- - - - Australia




Impact estimation for the next 72h
Download:





Rain exposed population - AoIs

Estimations based on the bulletin of 09 Apr 2021 18:00 UTC
LevelCountryPopulation 
50-100 mmAustralia7915 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 04 Apr 2021 12:00 237 30 thousand
- - - - Indonesia, Timor-Leste
Blue 2 04 Apr 2021 18:00 227 30 thousand
- - - - Indonesia
Blue 3 05 Apr 2021 00:00 252 10 thousand
- - - - Indonesia, Timor-Leste
Blue 4 05 Apr 2021 06:00 220 5 thousand
- - - - Timor-Leste, Indonesia
Blue 5 05 Apr 2021 12:00 169 -
- - - - - Indonesia
Blue 6 05 Apr 2021 18:00 277 2 thousand
- - - - Indonesia
Blue 7 06 Apr 2021 00:00 410 -
- - - - - Indonesia
Blue 8 06 Apr 2021 06:00 447 - - - - - - -
Blue 9 06 Apr 2021 12:00 417 - - - - - - -
Blue 10 06 Apr 2021 18:00 298 - - - - - - -
Blue 11 07 Apr 2021 00:00 284 - - - - - - -
Blue 12 07 Apr 2021 06:00 424 - - - - - - -
Blue 13 07 Apr 2021 12:00 553 - - - - - - -
Blue 14 07 Apr 2021 18:00 359 - - - - - - -
Blue 15 08 Apr 2021 00:00 335 - - - - - - -
Blue 16 08 Apr 2021 06:00 216 - - - - - - -
Blue 17 08 Apr 2021 12:00 185 - - - - - - -
Blue 18 08 Apr 2021 18:00 131 - - - - - - -
Blue 19 09 Apr 2021 00:00 120 - - - - - - -
Blue 20 09 Apr 2021 06:00 93 - - - - - - -
Blue 21 09 Apr 2021 12:00 103 - - - - - - -
Blue 22 09 Apr 2021 18:00 446 -
- - - - - Australia




Impact estimation for the next 72h

StormSurge

2.1 m

The maximum Storm surge height is  2.1m in Useless Loop, Australia. This height is estimated for 11 Apr 2021 10:00 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.

Calculation based on the bulletin of 09 Apr 2021 18:00 UTC
Alert Date (UTC) Name Country Storm surge height (m)
11 Apr 2021 10:00 Useless Loop Australia  2.1
11 Apr 2021 10:15 Dirk Hartog Australia  1.9
11 Apr 2021 14:30 Hamelin Pool Australia  1.8
11 Apr 2021 14:30 Hamelin Australia  1.8
11 Apr 2021 12:30 Tamala Australia  1.8
11 Apr 2021 15:00 Gladstone Australia  1.7
11 Apr 2021 13:30 Nanga Australia  1.6
11 Apr 2021 13:45 Carrarang Australia  1.6
11 Apr 2021 10:45 Denham Australia  1.5
11 Apr 2021 15:00 Shark Bay Australia  1.3
11 Apr 2021 15:00 Monkey Mia Australia  1.3
11 Apr 2021 13:00 Kalbarri Australia  0.9
11 Apr 2021 15:00 Geraldton Australia  0.8
11 Apr 2021 15:00 Drummond Cove Australia  0.8
11 Apr 2021 15:00 Popes Landing Australia  0.8
11 Apr 2021 15:00 Waggrakine Australia  0.8
11 Apr 2021 15:00 Horrocks Australia  0.7
11 Apr 2021 12:00 Carnarvon Australia  0.7
11 Apr 2021 15:15 Greenough Australia  0.7
11 Apr 2021 15:00 Gregory Australia  0.6
11 Apr 2021 15:00 Lynton Australia  0.6
10 Apr 2021 09:45 Learmonth Australia  0.6
11 Apr 2021 15:45 Denison Australia  0.5
11 Apr 2021 15:45 Port Denison Australia  0.5
11 Apr 2021 15:45 Dongara Australia  0.5
11 Apr 2021 07:45 Quobba Australia  0.4
11 Apr 2021 17:00 Illawong Australia  0.4
11 Apr 2021 07:30 Cape Cuvier Australia  0.4
10 Apr 2021 08:00 Exmouth Australia  0.4
11 Apr 2021 17:15 Coolimba Australia  0.4
10 Apr 2021 07:30 Onslow Australia  0.3
11 Apr 2021 17:15 Leeman Australia  0.3
09 Apr 2021 21:00 Mardie Australia  0.3
10 Apr 2021 09:15 Glenroy Australia  0.3
11 Apr 2021 17:30 Green Head Australia  0.3
09 Apr 2021 20:15 Ah Chong I Australia  0.3
11 Apr 2021 06:30 Gnaraloo Australia  0.3
11 Apr 2021 18:00 Jurien Australia  0.3
11 Apr 2021 07:15 Warroora Australia  0.3
10 Apr 2021 00:00 Cardabia Australia  0.2
11 Apr 2021 18:00 Cervantes Australia  0.2
09 Apr 2021 18:30 East Lewis I Australia  0.2
09 Apr 2021 18:30 Dampier Australia  0.2
09 Apr 2021 19:00 Wickham Australia  0.2
09 Apr 2021 19:00 Point Samson Australia  0.2
09 Apr 2021 19:00 Cossack Australia  0.2
11 Apr 2021 19:30 Dalyellup Australia  0.2
11 Apr 2021 19:30 Bunbury Australia  0.2
11 Apr 2021 19:30 Binningup Australia  0.2
11 Apr 2021 19:30 Myalup Australia  0.2
11 Apr 2021 19:30 Picton Australia  0.2
11 Apr 2021 19:30 Eaton Australia  0.2
11 Apr 2021 19:30 Burragenup Australia  0.2
11 Apr 2021 19:30 Australind Australia  0.2
09 Apr 2021 19:30 Aplame Indonesia  0.2
09 Apr 2021 19:30 Woereh Indonesia  0.2
09 Apr 2021 19:30 Lewohajong Indonesia  0.2
09 Apr 2021 19:30 Koekoewerang Indonesia  0.2
09 Apr 2021 19:30 Throng Indonesia  0.2
09 Apr 2021 19:30 Adoenara Indonesia  0.2
09 Apr 2021 19:30 Lamakera Indonesia  0.2
09 Apr 2021 19:30 Papelawe Indonesia  0.2
09 Apr 2021 19:30 Sagu Indonesia  0.2
09 Apr 2021 19:30 Wotanglolong Indonesia  0.2
09 Apr 2021 19:30 Lewokeling Indonesia  0.2
09 Apr 2021 19:30 Witihama Indonesia  0.2
09 Apr 2021 19:30 Boleng Indonesia  0.2
09 Apr 2021 19:30 Nereng Indonesia  0.2
11 Apr 2021 18:00 Lancelin Australia  0.2
11 Apr 2021 20:00 Vasse Australia  0.2
11 Apr 2021 20:00 Broadwater Australia  0.2
11 Apr 2021 20:00 Busselton Australia  0.2
11 Apr 2021 20:00 Wonnerup Australia  0.2
11 Apr 2021 20:00 Ludlow Australia  0.2
10 Apr 2021 06:15 Kencong Indonesia  0.2
10 Apr 2021 06:15 Lodjedjer Indonesia  0.2
11 Apr 2021 15:30 Dunsborough Australia  0.2
11 Apr 2021 15:30 Quindalup Australia  0.2
11 Apr 2021 20:15 Gunyulgup Australia  0.2
11 Apr 2021 20:15 Yallingup Australia  0.2
11 Apr 2021 19:00 Falcon Australia  0.2
11 Apr 2021 19:00 Safety Bay Australia  0.2
11 Apr 2021 19:00 Mandurah Australia  0.2
11 Apr 2021 19:00 Warnbro Australia  0.2
11 Apr 2021 19:00 Peelhurst Australia  0.2
11 Apr 2021 19:00 Singleton Australia  0.2
11 Apr 2021 19:00 Karnup Australia  0.2
11 Apr 2021 18:45 Seabird Australia  0.2
11 Apr 2021 18:45 Guilderton Australia  0.2
12 Apr 2021 14:30 Maringgai Indonesia  0.2
11 Apr 2021 18:45 Two Rocks Australia  0.2
11 Apr 2021 18:45 Yanchep Australia  0.2
11 Apr 2021 18:45 Quinns Rock Australia  0.2
10 Apr 2021 00:00 Blimbing Indonesia  0.2
10 Apr 2021 00:00 Dadapan Indonesia  0.2
10 Apr 2021 00:00 Banyuwangi Indonesia  0.2
10 Apr 2021 00:00 Banjuwangi Indonesia  0.2
10 Apr 2021 00:00 Soega Indonesia  0.2
10 Apr 2021 00:00 Gilimanuk Indonesia  0.2
10 Apr 2021 00:00 Penginoeman Indonesia  0.2
10 Apr 2021 00:00 Belimbingsari Indonesia  0.2
10 Apr 2021 00:00 Tjandikesuma Indonesia  0.2
09 Apr 2021 19:30 Lewoleba Indonesia  0.2
09 Apr 2021 19:30 Lamanuna Indonesia  0.2
12 Apr 2021 15:15 Cengkarengbelakang Indonesia  0.2
12 Apr 2021 15:15 Tipar Indonesia  0.2
11 Apr 2021 19:00 Rockingham Australia  0.2
11 Apr 2021 19:00 Wattleup Australia  0.2
12 Apr 2021 15:15 Balubuk Indonesia  0.2
11 Apr 2021 18:45 Mullalloo Beach Australia  0.2
11 Apr 2021 18:45 North Beach Australia  0.2
11 Apr 2021 18:45 Scarborough Australia  0.2
11 Apr 2021 18:45 Fremantle Australia  0.2
11 Apr 2021 18:45 North Fremantle Australia  0.2
11 Apr 2021 18:45 East Fremantle Australia  0.2
11 Apr 2021 18:45 Coogee Australia  0.2
11 Apr 2021 18:45 Spearwood Australia  0.2
12 Apr 2021 15:30 Kramat Indonesia  0.2
09 Apr 2021 19:15 Karratha Australia  0.2
12 Apr 2021 14:45 Kandangan Indonesia  0.2
12 Apr 2021 14:45 Gresik Indonesia  0.2
12 Apr 2021 14:45 Pangkalan Indonesia  0.2
12 Apr 2021 14:45 Batoe Porong Indonesia  0.2
12 Apr 2021 14:45 Kebanjar Indonesia  0.2
11 Apr 2021 19:00 Mosman Park Australia  0.2
11 Apr 2021 19:00 Cottesloe Australia  0.2
11 Apr 2021 19:00 Peppermint Grove Australia  0.2
11 Apr 2021 19:00 Swanbourne Australia  0.2
11 Apr 2021 19:00 Claremont Australia  0.2
11 Apr 2021 19:00 Bicton Australia  0.2
10 Apr 2021 04:30 Ningaloo Australia  0.2
12 Apr 2021 14:45 Tanara Indonesia  0.2
12 Apr 2021 14:45 Ketapang Indonesia  0.2
12 Apr 2021 15:15 Pedes Indonesia  0.2
12 Apr 2021 15:15 Sungaibuntu Indonesia  0.2
10 Apr 2021 01:15 Bundera Bundera Australia  0.2
12 Apr 2021 15:00 Domas Indonesia  0.2
09 Apr 2021 20:45 Menango Indonesia  0.2
09 Apr 2021 20:45 Tandjungkarang Indonesia  0.2
09 Apr 2021 20:45 Telukbetung Indonesia  0.2
09 Apr 2021 20:45 Tarahan Indonesia  0.2
10 Apr 2021 06:15 Ngalu Indonesia  0.2
10 Apr 2021 06:15 Tapil Indonesia  0.2
11 Apr 2021 19:30 Gracetown Australia  0.1
12 Apr 2021 14:15 Baliga Indonesia  0.1
12 Apr 2021 14:15 Laboean Indonesia  0.1
10 Apr 2021 03:00 Oeboeah Indonesia  0.1
10 Apr 2021 03:00 Hansisi Indonesia  0.1
10 Apr 2021 03:00 Naioni Indonesia  0.1
10 Apr 2021 03:00 Tenau Indonesia  0.1
10 Apr 2021 03:00 Manoelairoti Indonesia  0.1
10 Apr 2021 03:00 Namosain Indonesia  0.1
10 Apr 2021 03:00 Kupang Indonesia  0.1
10 Apr 2021 03:00 Soelamoe Indonesia  0.1
10 Apr 2021 03:00 Maoelafa Indonesia  0.1
10 Apr 2021 03:00 Pitai Indonesia  0.1
10 Apr 2021 03:00 Manikin Indonesia  0.1
10 Apr 2021 03:00 Pariti Indonesia  0.1
10 Apr 2021 03:00 Naimoeti Indonesia  0.1
09 Apr 2021 21:30 Tjikawung Indonesia  0.1
09 Apr 2021 21:30 Sumur Indonesia  0.1
09 Apr 2021 21:30 Aerdjeruk Indonesia  0.1
12 Apr 2021 15:30 Merak Indonesia  0.1
09 Apr 2021 19:45 Port Hedland Australia  0.1
09 Apr 2021 19:45 Wedgefield Australia  0.1
12 Apr 2021 14:45 Ketapang Indonesia  0.1
10 Apr 2021 01:30 Lamararap Indonesia  0.1
12 Apr 2021 14:45 Pasirputih Indonesia  0.1
12 Apr 2021 14:45 Muaratjilamaja Indonesia  0.1
09 Apr 2021 21:15 Umbulan Pepanggar Indonesia  0.1
09 Apr 2021 21:15 Kalianda Indonesia  0.1
10 Apr 2021 06:45 Thangoo Australia  0.1
10 Apr 2021 07:00 Broome Australia  0.1
10 Apr 2021 10:30 Derby Australia  0.1
10 Apr 2021 02:30 Huu Indonesia  0.1
10 Apr 2021 02:30 Madawa Indonesia  0.1
10 Apr 2021 02:30 Polo Indonesia  0.1
12 Apr 2021 13:30 Sidoardjo Indonesia  0.1
10 Apr 2021 02:30 Sindangsari Indonesia  0.1
10 Apr 2021 02:30 Cijulang Indonesia  0.1
10 Apr 2021 02:30 Cikalong Indonesia  0.1
10 Apr 2021 02:30 Pangadaran Indonesia  0.1
09 Apr 2021 18:00 Pardoo Australia  0.1
11 Apr 2021 19:30 Cilancang Indonesia  0.1
11 Apr 2021 19:30 Cirebon Indonesia  0.1
09 Apr 2021 19:15 Bangkulua Indonesia  0.1
12 Apr 2021 15:15 Bakau Indonesia  0.1
09 Apr 2021 21:00 Kiluan Indonesia  0.1
09 Apr 2021 21:00 Kekatang Indonesia  0.1
11 Apr 2021 19:30 Karangampel Indonesia  0.1
11 Apr 2021 19:15 Losan Indonesia  0.1
09 Apr 2021 21:00 Adipala Indonesia  0.1
09 Apr 2021 21:00 Binangoen Indonesia  0.1
12 Apr 2021 14:00 Sumberkuning Indonesia  0.1
12 Apr 2021 15:45 Sidaju Indonesia  0.1
12 Apr 2021 13:30 Pasuruan Indonesia  0.1
09 Apr 2021 18:00 Condon Australia  0.1
09 Apr 2021 21:00 Ajah Indonesia  0.1
12 Apr 2021 10:00 Kendal Indonesia  0.1
12 Apr 2021 10:00 Mangkang-Kulan Indonesia  0.1
12 Apr 2021 10:00 Djomblang Indonesia  0.1
12 Apr 2021 10:00 Semarang Indonesia  0.1
12 Apr 2021 10:00 Karangroto Indonesia  0.1
09 Apr 2021 23:00 Petanahan Indonesia  0.1
12 Apr 2021 13:00 Sampang Indonesia  0.1
12 Apr 2021 12:45 Bayeman Indonesia  0.1
10 Apr 2021 03:00 Muntjar Indonesia  0.1
09 Apr 2021 21:00 Chilachap Indonesia  0.1
12 Apr 2021 13:00 Probolinggo Indonesia  0.1
11 Apr 2021 22:45 Guring Indonesia  0.1
11 Apr 2021 22:45 Kota Agung Indonesia  0.1
11 Apr 2021 19:15 Bulakamba Indonesia  0.1
09 Apr 2021 21:45 Sunut Indonesia  0.1
09 Apr 2021 21:45 Pringgabaja Indonesia  0.1
10 Apr 2021 13:15 Maoe Ndai Indonesia  0.1
10 Apr 2021 13:15 Manoeran Indonesia  0.1
10 Apr 2021 13:15 Pigadjawa Indonesia  0.1
10 Apr 2021 13:15 Nangaboa Indonesia  0.1
10 Apr 2021 13:15 Waroe Kasoe Indonesia  0.1
10 Apr 2021 13:15 Wassa Indonesia  0.1
12 Apr 2021 13:30 Gending Indonesia  0.1
12 Apr 2021 13:30 Kraksaan Indonesia  0.1
10 Apr 2021 11:30 Laboean Mapin Indonesia  0.1
10 Apr 2021 11:30 Alas Indonesia  0.1
10 Apr 2021 11:30 Pernang Indonesia  0.1
09 Apr 2021 19:00 Djagalaja Indonesia  0.1
12 Apr 2021 13:45 Galis Indonesia  0.1
12 Apr 2021 13:45 Prenduan Indonesia  0.1
12 Apr 2021 09:45 Wedung Indonesia  0.1
12 Apr 2021 09:45 Kedungmalang Indonesia  0.1
12 Apr 2021 14:15 Patrol Indonesia  0.1