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 2 thousand in Category 1 or higher
Maximum wind speed 130 km/h
Maximum storm surge 1.8 m (11 Apr 09:45 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 130 km/h 1.8 m 107 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 2 thousand in Category 1 strength or higher (see SSHS)



Wind exposed population - AoIs

Estimations based on the bulletin of 11 Apr 2021 00:00 UTC
CategoryCountryPopulation 
CAT. 1Australia2401 
Tropical StormAustralia57335 

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 18:00 119 - - - - - - -
GREEN 23 10 Apr 2021 00:00 119 - - - - - - -
GREEN 24 10 Apr 2021 06:00 112 - - - - - - -
GREEN 25 10 Apr 2021 12:00 122 - - - - - - -
GREEN 26 10 Apr 2021 18:00 140 - - - - - - -
GREEN 27 11 Apr 2021 00:00 162 2 thousand
- - - - Australia




Impact estimation for the next 72h
Download:





Rain exposed population - AoIs

Estimations based on the bulletin of 11 Apr 2021 00:00 UTC
LevelCountryPopulation 
50-100 mmAustralia4433 

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 18:00 134 - - - - - - -
Blue 23 10 Apr 2021 00:00 134 - - - - - - -
Blue 24 10 Apr 2021 06:00 126 - - - - - - -
Blue 25 10 Apr 2021 12:00 128 - - - - - - -
Blue 26 10 Apr 2021 18:00 160 - - - - - - -
Blue 27 11 Apr 2021 00:00 108 -
- - - - - Australia




Impact estimation for the next 72h

StormSurge

1.8 m

The maximum Storm surge height is  1.8m in Useless Loop, Australia. This height is estimated for 11 Apr 2021 09:45 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 11 Apr 2021 00:00 UTC
Alert Date (UTC) Name Country Storm surge height (m)
11 Apr 2021 09:45 Useless Loop Australia  1.8
11 Apr 2021 10:15 Tamala Australia  1.6
11 Apr 2021 09:30 Dirk Hartog Australia  1.6
11 Apr 2021 14:30 Hamelin Pool Australia  1.5
11 Apr 2021 14:30 Hamelin Australia  1.5
11 Apr 2021 11:45 Nanga Australia  1.4
11 Apr 2021 11:15 Carrarang Australia  1.4
11 Apr 2021 14:30 Gladstone Australia  1.3
11 Apr 2021 11:45 Denham Australia  1.1
11 Apr 2021 13:30 Shark Bay Australia  1.1
11 Apr 2021 13:30 Monkey Mia Australia  1.1
11 Apr 2021 12:15 Kalbarri Australia  0.7
11 Apr 2021 09:45 Carnarvon Australia  0.6
11 Apr 2021 11:45 Gregory Australia  0.5
11 Apr 2021 11:45 Lynton Australia  0.5
11 Apr 2021 19:00 Denison Australia  0.5
11 Apr 2021 19:00 Port Denison Australia  0.5
11 Apr 2021 19:00 Dongara Australia  0.5
11 Apr 2021 14:00 Horrocks Australia  0.5
11 Apr 2021 15:00 Geraldton Australia  0.5
11 Apr 2021 15:00 Drummond Cove Australia  0.5
11 Apr 2021 15:00 Popes Landing Australia  0.5
11 Apr 2021 15:00 Waggrakine Australia  0.5
11 Apr 2021 15:45 Greenough Australia  0.4
11 Apr 2021 19:30 Illawong Australia  0.4
11 Apr 2021 19:30 Coolimba Australia  0.4
11 Apr 2021 07:30 Quobba Australia  0.4
11 Apr 2021 07:00 Cape Cuvier Australia  0.3
11 Apr 2021 19:45 Green Head Australia  0.3
11 Apr 2021 19:45 Leeman Australia  0.3
11 Apr 2021 19:30 Binningup Australia  0.3
11 Apr 2021 19:30 Myalup Australia  0.3
11 Apr 2021 01:30 Gnaraloo Australia  0.3
11 Apr 2021 03:15 Learmonth Australia  0.3
11 Apr 2021 19:45 Jurien Australia  0.3
11 Apr 2021 19:00 Vasse Australia  0.3
11 Apr 2021 19:00 Broadwater Australia  0.3
11 Apr 2021 19:00 Busselton Australia  0.3
11 Apr 2021 19:00 Wonnerup Australia  0.3
11 Apr 2021 19:00 Ludlow Australia  0.3
11 Apr 2021 19:30 Burragenup Australia  0.3
11 Apr 2021 19:30 Dalyellup Australia  0.3
11 Apr 2021 19:30 Bunbury Australia  0.3
11 Apr 2021 19:30 Picton Australia  0.3
11 Apr 2021 19:30 Eaton Australia  0.3
11 Apr 2021 19:30 Australind Australia  0.3
11 Apr 2021 20:15 Gunyulgup Australia  0.3
11 Apr 2021 20:15 Yallingup Australia  0.3
11 Apr 2021 20:15 Dunsborough Australia  0.3
11 Apr 2021 20:15 Quindalup Australia  0.3
11 Apr 2021 05:15 Warroora Australia  0.3
11 Apr 2021 18:15 Cervantes Australia  0.2
11 Apr 2021 05:15 Cardabia Australia  0.2
11 Apr 2021 18:30 Falcon Australia  0.2
11 Apr 2021 19:15 Mandurah Australia  0.2
11 Apr 2021 19:15 Singleton Australia  0.2
11 Apr 2021 19:00 Peelhurst Australia  0.2
11 Apr 2021 19:00 Karnup Australia  0.2
11 Apr 2021 18:45 Safety Bay Australia  0.2
11 Apr 2021 18:45 Warnbro Australia  0.2
12 Apr 2021 19:45 Cilancang Indonesia  0.2
12 Apr 2021 19:45 Cirebon Indonesia  0.2
11 Apr 2021 19:00 Lancelin Australia  0.2
12 Apr 2021 19:45 Karangampel Indonesia  0.2
12 Apr 2021 15:00 Maringgai Indonesia  0.2
12 Apr 2021 19:30 Losan Indonesia  0.2
11 Apr 2021 19:30 Guilderton Australia  0.2
11 Apr 2021 19:30 Two Rocks Australia  0.2
11 Apr 2021 19:30 Yanchep Australia  0.2
11 Apr 2021 19:00 Rockingham Australia  0.2
11 Apr 2021 19:00 Coogee Australia  0.2
11 Apr 2021 19:30 Fremantle Australia  0.2
11 Apr 2021 19:30 North Fremantle Australia  0.2
11 Apr 2021 19:30 Mosman Park Australia  0.2
11 Apr 2021 19:30 Cottesloe Australia  0.2
11 Apr 2021 19:30 East Fremantle Australia  0.2
11 Apr 2021 03:45 Exmouth Australia  0.2
12 Apr 2021 15:30 Kramat Indonesia  0.2
12 Apr 2021 15:30 Cengkarengbelakang Indonesia  0.2
12 Apr 2021 15:30 Tipar Indonesia  0.2
12 Apr 2021 19:30 Bulakamba Indonesia  0.2
12 Apr 2021 15:15 Balubuk Indonesia  0.2
11 Apr 2021 19:30 Seabird Australia  0.2
11 Apr 2021 19:15 Quinns Rock Australia  0.2
11 Apr 2021 20:00 Wattleup Australia  0.2
12 Apr 2021 15:00 Tanara Indonesia  0.2
12 Apr 2021 15:00 Ketapang Indonesia  0.2
11 Apr 2021 19:15 Gracetown Australia  0.2
11 Apr 2021 19:15 Mullalloo Beach Australia  0.2
11 Apr 2021 19:15 North Beach Australia  0.2
11 Apr 2021 19:15 Scarborough Australia  0.2
11 Apr 2021 19:15 Peppermint Grove Australia  0.2
11 Apr 2021 19:15 Swanbourne Australia  0.2
11 Apr 2021 19:15 Claremont Australia  0.2
11 Apr 2021 19:15 Bicton Australia  0.2
12 Apr 2021 19:30 Klampok Indonesia  0.2
11 Apr 2021 02:00 Glenroy Australia  0.2
11 Apr 2021 19:45 Spearwood Australia  0.2
12 Apr 2021 15:00 Domas Indonesia  0.2
12 Apr 2021 15:00 Pedes Indonesia  0.2
11 Apr 2021 02:45 Onslow Australia  0.2
12 Apr 2021 15:15 Sungaibuntu Indonesia  0.2
12 Apr 2021 09:15 Blimbing Indonesia  0.2
12 Apr 2021 09:15 Dadapan Indonesia  0.2
12 Apr 2021 09:15 Banyuwangi Indonesia  0.2
12 Apr 2021 09:15 Banjuwangi Indonesia  0.2
12 Apr 2021 09:15 Soega Indonesia  0.2
12 Apr 2021 09:15 Gilimanuk Indonesia  0.2
12 Apr 2021 09:15 Penginoeman Indonesia  0.2
12 Apr 2021 09:15 Belimbingsari Indonesia  0.2
12 Apr 2021 09:15 Tjandikesuma Indonesia  0.2
12 Apr 2021 14:30 Merak Indonesia  0.2
12 Apr 2021 14:45 Ketapang Indonesia  0.2
11 Apr 2021 03:00 Ningaloo Australia  0.2
12 Apr 2021 19:15 Tegal Indonesia  0.2
12 Apr 2021 08:15 Ngalu Indonesia  0.2
12 Apr 2021 08:15 Tapil Indonesia  0.2
13 Apr 2021 22:15 Kendal Indonesia  0.2
13 Apr 2021 22:15 Mangkang-Kulan Indonesia  0.2
13 Apr 2021 22:15 Djomblang Indonesia  0.2
13 Apr 2021 22:15 Semarang Indonesia  0.2
13 Apr 2021 22:15 Karangroto Indonesia  0.2
11 Apr 2021 00:30 Kencong Indonesia  0.1
11 Apr 2021 00:30 Lodjedjer Indonesia  0.1
12 Apr 2021 22:15 Broome Australia  0.1
13 Apr 2021 20:15 Wanasari Indonesia  0.1
13 Apr 2021 21:00 Petaroekan Indonesia  0.1
13 Apr 2021 21:00 Sigedang Indonesia  0.1
13 Apr 2021 21:00 Pekalongan Indonesia  0.1
13 Apr 2021 20:45 Pemalang Indonesia  0.1
11 Apr 2021 01:00 Mundjungan Indonesia  0.1
11 Apr 2021 01:00 Tasikmadoe Indonesia  0.1
11 Apr 2021 01:00 Popoh Indonesia  0.1
13 Apr 2021 21:45 Sidja Indonesia  0.1
12 Apr 2021 14:45 Bakau Indonesia  0.1
12 Apr 2021 14:15 Pasirputih Indonesia  0.1
12 Apr 2021 14:15 Muaratjilamaja Indonesia  0.1
13 Apr 2021 07:15 Muntjar Indonesia  0.1
13 Apr 2021 21:30 Wedung Indonesia  0.1
13 Apr 2021 21:30 Kedungmalang Indonesia  0.1
13 Apr 2021 21:30 Bugel Indonesia  0.1
13 Apr 2021 15:45 Sidaju Indonesia  0.1
13 Apr 2021 15:45 Gresik Indonesia  0.1
13 Apr 2021 15:45 Pangkalan Indonesia  0.1
13 Apr 2021 15:45 Batoe Porong Indonesia  0.1
12 Apr 2021 22:30 Thangoo Australia  0.1
13 Apr 2021 14:30 Kandangan Indonesia  0.1
13 Apr 2021 14:30 Kebanjar Indonesia  0.1
12 Apr 2021 17:00 Tjikawung Indonesia  0.1
12 Apr 2021 17:00 Aerdjeruk Indonesia  0.1
13 Apr 2021 21:45 Jepara Indonesia  0.1
13 Apr 2021 21:30 Karanggondang Indonesia  0.1
13 Apr 2021 22:00 Indramaju Indonesia  0.1
11 Apr 2021 22:45 Guring Indonesia  0.1
11 Apr 2021 22:45 Kota Agung Indonesia  0.1
12 Apr 2021 10:00 Kiluan Indonesia  0.1
12 Apr 2021 10:00 Kekatang Indonesia  0.1
12 Apr 2021 10:00 Menango Indonesia  0.1
12 Apr 2021 10:00 Telukbetung Indonesia  0.1
13 Apr 2021 16:00 Eucla Motel Australia  0.1
13 Apr 2021 20:00 Taju Indonesia  0.1
13 Apr 2021 20:00 Bulumanis Indonesia  0.1
13 Apr 2021 20:00 Batangan Indonesia  0.1
13 Apr 2021 20:00 Rembang Indonesia  0.1
13 Apr 2021 15:30 Tlagabiru Indonesia  0.1
13 Apr 2021 15:30 Banjoeates Indonesia  0.1
13 Apr 2021 15:30 Ketapang Indonesia  0.1
13 Apr 2021 15:30 Kelapang Indonesia  0.1
13 Apr 2021 14:30 Baliga Indonesia  0.1
13 Apr 2021 14:30 Laboean Indonesia  0.1
13 Apr 2021 22:45 Cangkring Indonesia  0.1
11 Apr 2021 07:15 Oeboeah Indonesia  0.1
11 Apr 2021 07:15 Hansisi Indonesia  0.1
11 Apr 2021 07:15 Naioni Indonesia  0.1
11 Apr 2021 07:15 Tenau Indonesia  0.1
11 Apr 2021 07:15 Manoelairoti Indonesia  0.1
11 Apr 2021 07:15 Namosain Indonesia  0.1
11 Apr 2021 07:15 Kupang Indonesia  0.1
11 Apr 2021 07:15 Soelamoe Indonesia  0.1
11 Apr 2021 07:15 Maoelafa Indonesia  0.1
11 Apr 2021 07:15 Pitai Indonesia  0.1
11 Apr 2021 07:15 Manikin Indonesia  0.1
11 Apr 2021 07:15 Pariti Indonesia  0.1
11 Apr 2021 07:15 Naimoeti Indonesia  0.1
13 Apr 2021 20:00 Karangsari Indonesia  0.1
13 Apr 2021 22:30 Patrol Indonesia  0.1
13 Apr 2021 22:30 Kandanghaur Indonesia  0.1
13 Apr 2021 15:30 Brassan Indonesia  0.1
12 Apr 2021 09:45 Tandjungkarang Indonesia  0.1
12 Apr 2021 09:45 Tarahan Indonesia  0.1
13 Apr 2021 11:15 Laboean Mapin Indonesia  0.1
13 Apr 2021 11:15 Alas Indonesia  0.1
13 Apr 2021 11:15 Pernang Indonesia  0.1
13 Apr 2021 18:00 Banjoebiroe Indonesia  0.1
13 Apr 2021 18:00 Cupel Indonesia  0.1
13 Apr 2021 18:00 Banjuwedang Indonesia  0.1
13 Apr 2021 18:00 Prancak Indonesia  0.1
13 Apr 2021 18:00 Negara Indonesia  0.1
12 Apr 2021 05:30 Sokabana Indonesia  0.1
11 Apr 2021 21:30 Chilachap Indonesia  0.1
11 Apr 2021 21:30 Adipala Indonesia  0.1
11 Apr 2021 02:30 Bundera Bundera Australia  0.1
11 Apr 2021 02:15 Pangadaran Indonesia  0.1
11 Apr 2021 02:15 Kaliputjang Indonesia  0.1
13 Apr 2021 14:30 Aermata Indonesia  0.1
13 Apr 2021 14:30 Klampis Indonesia  0.1
12 Apr 2021 20:15 Binangoen Indonesia  0.1
13 Apr 2021 19:15 Sindangsari Indonesia  0.1
13 Apr 2021 19:15 Cijulang Indonesia  0.1
13 Apr 2021 19:15 Cikalong Indonesia  0.1
11 Apr 2021 04:15 Batuulo Indonesia  0.1
13 Apr 2021 15:15 Sapulu Indonesia  0.1
12 Apr 2021 14:45 Anjer-Kidu Indonesia  0.1
13 Apr 2021 14:45 Tambak Indonesia  0.1
13 Apr 2021 14:45 Sangkapura Indonesia  0.1
12 Apr 2021 19:45 Eyre Australia  0.1
13 Apr 2021 20:00 Lasem Indonesia  0.1
13 Apr 2021 15:15 Ambunten-timu Indonesia  0.1
13 Apr 2021 14:30 Sumberkuning Indonesia  0.1
13 Apr 2021 14:30 Sampang Indonesia  0.1
12 Apr 2021 15:30 Derby Australia  0.1
12 Apr 2021 06:45 Padangan-wetan Indonesia  0.1
12 Apr 2021 06:45 Kalipang Indonesia  0.1
12 Apr 2021 06:45 Lemanbang Indonesia  0.1
11 Apr 2021 07:15 Ah Chong I Australia  0.1
13 Apr 2021 04:45 Kolitjaah Indonesia  0.1
13 Apr 2021 04:45 Tjiteureup Indonesia  0.1
13 Apr 2021 04:45 Labuhan Indonesia  0.1
13 Apr 2021 04:45 Kaduperasi Indonesia  0.1
11 Apr 2021 16:00 Port Hedland Australia  0.1
13 Apr 2021 14:30 Batuputihkenek Indonesia  0.1
13 Apr 2021 14:30 Lombang Indonesia  0.1
13 Apr 2021 14:30 Banraas Indonesia  0.1
13 Apr 2021 14:30 Galis Indonesia  0.1
13 Apr 2021 14:30 Prenduan Indonesia  0.1
11 Apr 2021 01:45 Ajah Indonesia  0.1
12 Apr 2021 08:15 East Lewis I Australia  0.1
12 Apr 2021 08:15 Dampier Australia  0.1
13 Apr 2021 16:00 Belukares Indonesia  0.1
13 Apr 2021 16:00 Sumenep Indonesia  0.1
13 Apr 2021 13:00 Djangdjangan Indonesia  0.1
13 Apr 2021 13:00 Puteran Indonesia  0.1
13 Apr 2021 13:00 Sokaramme Indonesia  0.1
12 Apr 2021 13:30 Sidoardjo Indonesia  0.1
13 Apr 2021 14:00 Pasuruan Indonesia  0.1
12 Apr 2021 06:45 Tambakbaja Indonesia  0.1
12 Apr 2021 06:45 Remen Indonesia  0.1
12 Apr 2021 06:45 Plosokere Indonesia  0.1
12 Apr 2021 06:45 Djenu Indonesia  0.1
12 Apr 2021 06:45 Tuban Indonesia  0.1
13 Apr 2021 03:00 Bayeman Indonesia  0.1