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 Few people in Category 1 or higher
Maximum wind speed 90 km/h
Maximum storm surge 1.6 m (11 Apr 18:00 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 90 km/h 1.6 m 93 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 30 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 09 Apr 2021 06:00 UTC
CategoryCountryPopulation 
CAT. 3Australia479 
CAT. 2Australia20 
CAT. 1Australia387 
Tropical StormAustralia28858 

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 06:00 198 Few people
- - Australia




Impact estimation for the next 72h
Download:





Rain exposed population - AoIs

Estimations based on the bulletin of 09 Apr 2021 06:00 UTC
LevelCountryPopulation 
50-100 mmAustralia1016 

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 06:00 462 -
- - - - - Australia




Impact estimation for the next 72h

StormSurge

1.6 m

The maximum Storm surge height is  1.6m in Hamelin Pool, Australia. 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.

Calculation based on the bulletin of 09 Apr 2021 06:00 UTC
Alert Date (UTC) Name Country Storm surge height (m)
11 Apr 2021 18:00 Hamelin Pool Australia  1.6
11 Apr 2021 18:00 Hamelin Australia  1.6
11 Apr 2021 15:45 Gladstone Australia  1.6
11 Apr 2021 16:45 Tamala Australia  1.4
11 Apr 2021 16:15 Nanga Australia  1.4
11 Apr 2021 17:00 Carrarang Australia  1.4
11 Apr 2021 13:15 Useless Loop Australia  1.3
11 Apr 2021 13:15 Denham Australia  1.3
11 Apr 2021 14:45 Dirk Hartog Australia  1.3
11 Apr 2021 13:15 Shark Bay Australia  1.3
11 Apr 2021 13:15 Monkey Mia Australia  1.3
11 Apr 2021 15:00 Carnarvon Australia  0.7
11 Apr 2021 16:15 Kalbarri Australia  0.4
11 Apr 2021 18:15 Geraldton Australia  0.4
11 Apr 2021 18:15 Drummond Cove Australia  0.4
11 Apr 2021 18:15 Popes Landing Australia  0.4
11 Apr 2021 18:15 Waggrakine Australia  0.4
10 Apr 2021 16:15 Learmonth Australia  0.4
11 Apr 2021 18:00 Horrocks Australia  0.4
11 Apr 2021 10:30 Quobba Australia  0.4
11 Apr 2021 18:45 Greenough Australia  0.4
11 Apr 2021 10:30 Cape Cuvier Australia  0.4
11 Apr 2021 19:00 Denison Australia  0.4
11 Apr 2021 19:00 Port Denison Australia  0.4
11 Apr 2021 19:00 Dongara Australia  0.4
11 Apr 2021 17:45 Gregory Australia  0.4
11 Apr 2021 17:45 Lynton Australia  0.4
09 Apr 2021 11:00 Mardie Australia  0.4
09 Apr 2021 09:15 Onslow Australia  0.3
09 Apr 2021 07:45 East Lewis I Australia  0.3
09 Apr 2021 07:45 Dampier Australia  0.3
09 Apr 2021 08:30 Wickham Australia  0.3
09 Apr 2021 08:30 Point Samson Australia  0.3
09 Apr 2021 08:30 Cossack Australia  0.3
11 Apr 2021 18:00 Illawong Australia  0.3
11 Apr 2021 18:00 Coolimba Australia  0.3
09 Apr 2021 09:00 Karratha Australia  0.3
09 Apr 2021 10:30 Exmouth Australia  0.3
09 Apr 2021 06:45 Ah Chong I Australia  0.3
11 Apr 2021 07:15 Warroora Australia  0.3
11 Apr 2021 18:30 Leeman Australia  0.3
11 Apr 2021 10:30 Gnaraloo Australia  0.3
11 Apr 2021 18:15 Green Head Australia  0.3
09 Apr 2021 06:30 Pardoo Australia  0.3
09 Apr 2021 11:15 Kencong Indonesia  0.2
09 Apr 2021 11:15 Lodjedjer Indonesia  0.2
09 Apr 2021 08:45 Glenroy Australia  0.2
09 Apr 2021 06:30 Condon Australia  0.2
09 Apr 2021 07:45 Cardabia Australia  0.2
11 Apr 2021 18:00 Jurien Australia  0.2
09 Apr 2021 09:15 Port Hedland Australia  0.2
09 Apr 2021 09:15 Wedgefield Australia  0.2
09 Apr 2021 06:45 Broome 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
09 Apr 2021 06:45 Thangoo Australia  0.2
09 Apr 2021 13:30 Derby Australia  0.2
09 Apr 2021 06:15 Tjikawung Indonesia  0.2
09 Apr 2021 06:15 Aerdjeruk Indonesia  0.2
09 Apr 2021 11:30 Lewoleba Indonesia  0.2
09 Apr 2021 11:30 Lamanuna Indonesia  0.2
11 Apr 2021 18:15 Cervantes Australia  0.2
09 Apr 2021 09:00 Chilachap Indonesia  0.2
09 Apr 2021 09:00 Adipala Indonesia  0.2
09 Apr 2021 09:00 Binangoen Indonesia  0.2
09 Apr 2021 11:15 Laboean Mapin Indonesia  0.2
09 Apr 2021 11:15 Alas Indonesia  0.2
09 Apr 2021 11:15 Pernang Indonesia  0.2
09 Apr 2021 16:15 Menango Indonesia  0.2
09 Apr 2021 16:15 Tandjungkarang Indonesia  0.2
09 Apr 2021 16:15 Telukbetung Indonesia  0.2
09 Apr 2021 16:15 Tarahan Indonesia  0.2
09 Apr 2021 08:45 Ajah Indonesia  0.2
09 Apr 2021 11:00 Petanahan Indonesia  0.2
09 Apr 2021 14:45 Kandangan Indonesia  0.2
09 Apr 2021 14:45 Gresik Indonesia  0.2
09 Apr 2021 14:45 Pangkalan Indonesia  0.2
09 Apr 2021 14:45 Batoe Porong Indonesia  0.2
09 Apr 2021 14:45 Kebanjar Indonesia  0.2
09 Apr 2021 11:30 Lamararap Indonesia  0.2
11 Apr 2021 19:15 Vasse Australia  0.2
11 Apr 2021 19:15 Broadwater Australia  0.2
11 Apr 2021 19:15 Busselton Australia  0.2
11 Apr 2021 19:15 Wonnerup Australia  0.2
11 Apr 2021 19:15 Ludlow Australia  0.2
09 Apr 2021 07:30 Waterbank Australia  0.2
09 Apr 2021 09:30 Cikalong Indonesia  0.2
09 Apr 2021 09:30 Pangadaran Indonesia  0.2
09 Apr 2021 09:30 Kaliputjang Indonesia  0.2
11 Apr 2021 20:30 Lancelin Australia  0.2
10 Apr 2021 03:00 Oeboeah Indonesia  0.2
10 Apr 2021 03:00 Hansisi Indonesia  0.2
10 Apr 2021 03:00 Naioni Indonesia  0.2
10 Apr 2021 03:00 Tenau Indonesia  0.2
10 Apr 2021 03:00 Manoelairoti Indonesia  0.2
10 Apr 2021 03:00 Namosain Indonesia  0.2
10 Apr 2021 03:00 Kupang Indonesia  0.2
10 Apr 2021 03:00 Soelamoe Indonesia  0.2
10 Apr 2021 03:00 Maoelafa Indonesia  0.2
10 Apr 2021 03:00 Pitai Indonesia  0.2
10 Apr 2021 03:00 Manikin Indonesia  0.2
10 Apr 2021 03:00 Pariti Indonesia  0.2
10 Apr 2021 03:00 Naimoeti Indonesia  0.2
09 Apr 2021 18:30 Ningaloo Australia  0.2
09 Apr 2021 14:30 Baliga Indonesia  0.1
09 Apr 2021 14:30 Laboean Indonesia  0.1
09 Apr 2021 07:45 Ngalu Indonesia  0.1
09 Apr 2021 07:45 Tapil Indonesia  0.1
11 Apr 2021 21:00 Seabird Australia  0.1
09 Apr 2021 13:15 Pasuruan Indonesia  0.1
09 Apr 2021 13:15 Bayeman Indonesia  0.1
11 Apr 2021 21:15 Guilderton Australia  0.1
09 Apr 2021 15:15 Sumur Indonesia  0.1
11 Apr 2021 18:15 Gracetown Australia  0.1
11 Apr 2021 18:30 Gunyulgup Australia  0.1
11 Apr 2021 18:30 Yallingup Australia  0.1
11 Apr 2021 18:30 Dunsborough Australia  0.1
11 Apr 2021 18:30 Quindalup Australia  0.1
09 Apr 2021 09:15 Sindangsari Indonesia  0.1
09 Apr 2021 09:15 Cijulang Indonesia  0.1
09 Apr 2021 07:45 Muntjar Indonesia  0.1
09 Apr 2021 07:45 Blimbing Indonesia  0.1
09 Apr 2021 07:45 Dadapan Indonesia  0.1
09 Apr 2021 07:45 Banyuwangi Indonesia  0.1
09 Apr 2021 07:45 Banjuwangi Indonesia  0.1
09 Apr 2021 07:45 Gilimanuk Indonesia  0.1
09 Apr 2021 07:45 Penginoeman Indonesia  0.1
09 Apr 2021 07:45 Belimbingsari Indonesia  0.1
09 Apr 2021 07:45 Tjandikesuma Indonesia  0.1
11 Apr 2021 23:00 Dalyellup Australia  0.1
11 Apr 2021 23:00 Bunbury Australia  0.1
11 Apr 2021 23:00 Picton Australia  0.1
09 Apr 2021 19:30 Bundera Bundera Australia  0.1
09 Apr 2021 06:00 Kennedys Cottage Australia  0.1
09 Apr 2021 09:15 Condro Indonesia  0.1
09 Apr 2021 13:45 Sidoardjo Indonesia  0.1
12 Apr 2021 00:45 Two Rocks Australia  0.1
12 Apr 2021 00:45 Yanchep Australia  0.1
12 Apr 2021 00:45 Quinns Rock Australia  0.1
11 Apr 2021 23:15 Eaton Australia  0.1
11 Apr 2021 23:15 Burragenup Australia  0.1
11 Apr 2021 23:15 Australind Australia  0.1
11 Apr 2021 17:45 Binningup Australia  0.1
11 Apr 2021 17:45 Myalup Australia  0.1
09 Apr 2021 16:45 Oenggae Indonesia  0.1
09 Apr 2021 16:45 Nordale Indonesia  0.1
09 Apr 2021 16:45 Korlo Indonesia  0.1
09 Apr 2021 16:45 Suaha Indonesia  0.1
09 Apr 2021 16:45 Keoen Indonesia  0.1
09 Apr 2021 16:45 Daeoerendale Indonesia  0.1
09 Apr 2021 16:45 Akle Indonesia  0.1
09 Apr 2021 16:45 Eahun Indonesia  0.1
09 Apr 2021 16:45 Pepela Indonesia  0.1
09 Apr 2021 16:45 Roti Indonesia  0.1
09 Apr 2021 16:45 Batuidu Indonesia  0.1
09 Apr 2021 16:45 Usulain Indonesia  0.1
09 Apr 2021 16:45 Oisina Indonesia  0.1
09 Apr 2021 16:45 Tablolong Indonesia  0.1
09 Apr 2021 13:15 Sumberkuning Indonesia  0.1
09 Apr 2021 13:15 Sampang Indonesia  0.1
09 Apr 2021 11:15 Lungkung Indonesia  0.1
09 Apr 2021 11:15 Lembongan Indonesia  0.1
09 Apr 2021 11:15 Tojapakeh Indonesia  0.1
09 Apr 2021 11:15 Batoemadeg Indonesia  0.1
09 Apr 2021 11:15 Batoemoenggoel Indonesia  0.1
09 Apr 2021 11:15 Tanglad Indonesia  0.1
09 Apr 2021 16:30 Kiluan Indonesia  0.1
09 Apr 2021 16:30 Kekatang Indonesia  0.1
09 Apr 2021 09:45 Pahanuma Indonesia  0.1
09 Apr 2021 09:45 Belowa Indonesia  0.1
09 Apr 2021 12:45 Probolinggo Indonesia  0.1
09 Apr 2021 10:30 Soega Indonesia  0.1
12 Apr 2021 02:15 Maringgai Indonesia  0.1
11 Apr 2021 18:30 Falcon Australia  0.1
09 Apr 2021 10:15 Wara Indonesia  0.1
09 Apr 2021 10:15 Toronaroe Indonesia  0.1
12 Apr 2021 02:00 Safety Bay Australia  0.1
12 Apr 2021 02:00 Rockingham Australia  0.1
12 Apr 2021 02:00 Fremantle Australia  0.1
12 Apr 2021 02:00 Warnbro Australia  0.1
12 Apr 2021 02:00 North Fremantle Australia  0.1
12 Apr 2021 02:00 East Fremantle Australia  0.1
12 Apr 2021 02:00 Coogee Australia  0.1
12 Apr 2021 02:00 Spearwood Australia  0.1
12 Apr 2021 02:00 Wattleup Australia  0.1
09 Apr 2021 10:00 Karangberak Indonesia  0.1
09 Apr 2021 10:00 Tampang Indonesia  0.1
09 Apr 2021 10:00 Sawangbalak Indonesia  0.1
12 Apr 2021 01:00 Mullalloo Beach Australia  0.1
09 Apr 2021 16:00 Brassan Indonesia  0.1
09 Apr 2021 10:45 Muarabinuangeun Indonesia  0.1
09 Apr 2021 11:00 Waingapu Indonesia  0.1
09 Apr 2021 11:00 Matawai Indonesia  0.1
09 Apr 2021 11:00 Pajeti Indonesia  0.1
09 Apr 2021 11:00 Lakohembi Indonesia  0.1
09 Apr 2021 08:30 Kollan I Australia  0.1
09 Apr 2021 06:30 Maoe Ndai Indonesia  0.1
09 Apr 2021 06:30 Manoeran Indonesia  0.1
09 Apr 2021 06:30 Pigadjawa Indonesia  0.1
09 Apr 2021 06:30 Nangaboa Indonesia  0.1
09 Apr 2021 06:30 Waroe Kasoe Indonesia  0.1
09 Apr 2021 06:30 Wassa Indonesia  0.1
09 Apr 2021 11:30 Galis Indonesia  0.1
09 Apr 2021 11:30 Prenduan Indonesia  0.1
12 Apr 2021 01:15 Mosman Park Australia  0.1
12 Apr 2021 01:15 Cottesloe Australia  0.1
12 Apr 2021 01:15 Peppermint Grove Australia  0.1
12 Apr 2021 01:15 Swanbourne Australia  0.1
12 Apr 2021 01:15 Claremont Australia  0.1
12 Apr 2021 01:15 Bicton Australia  0.1
09 Apr 2021 12:30 Gending Indonesia  0.1
09 Apr 2021 12:30 Kraksaan Indonesia  0.1
09 Apr 2021 08:30 Pender Australia  0.1
09 Apr 2021 12:45 Karanganjar Indonesia  0.1
09 Apr 2021 12:45 Chikalong Indonesia  0.1
09 Apr 2021 12:45 Kalapagenep Indonesia  0.1
12 Apr 2021 01:15 North Beach Australia  0.1
12 Apr 2021 01:15 Scarborough Australia  0.1
09 Apr 2021 13:15 Djate Indonesia  0.1
09 Apr 2021 13:15 Bluto Indonesia  0.1
09 Apr 2021 13:15 Saroka Indonesia  0.1
09 Apr 2021 13:15 Sumenep Indonesia  0.1
09 Apr 2021 13:15 Bundan Indonesia  0.1
09 Apr 2021 13:15 Gedugan Indonesia  0.1
09 Apr 2021 11:15 Seseh Indonesia  0.1
09 Apr 2021 11:15 Kuta Indonesia  0.1
09 Apr 2021 11:15 Djimbaran Indonesia  0.1
09 Apr 2021 11:15 Boealoe Indonesia  0.1
09 Apr 2021 11:15 Benua Indonesia  0.1
09 Apr 2021 11:15 Denpasar Indonesia  0.1
09 Apr 2021 11:15 Sukawati Indonesia  0.1
09 Apr 2021 11:15 Labih Indonesia  0.1
09 Apr 2021 11:15 Bandjarangkan Indonesia  0.1
09 Apr 2021 10:15 Maoedoeloeng Indonesia  0.1
11 Apr 2021 19:00 Mandurah Australia  0.1
11 Apr 2021 19:00 Singleton Australia  0.1
12 Apr 2021 02:30 Peelhurst Australia  0.1
12 Apr 2021 02:30 Karnup Australia  0.1
09 Apr 2021 09:00 Sape Indonesia  0.1
09 Apr 2021 09:00 Badjo Indonesia  0.1
09 Apr 2021 06:45 Batuulo Indonesia  0.1
12 Apr 2021 02:15 Domas Indonesia  0.1
12 Apr 2021 02:15 Tanara Indonesia  0.1
12 Apr 2021 02:15 Ketapang Indonesia  0.1
09 Apr 2021 12:30 Karagajar Indonesia  0.1
09 Apr 2021 07:45 Galur Indonesia  0.1
09 Apr 2021 07:45 Srandakan Indonesia  0.1
09 Apr 2021 07:45 Kebonongan Indonesia  0.1
09 Apr 2021 07:45 Tirtohardjo Indonesia  0.1
11 Apr 2021 03:00 Cengkarengbelakang Indonesia  0.1
11 Apr 2021 03:00 Tipar Indonesia  0.1
09 Apr 2021 07:00 Grajagan Indonesia  0.1
09 Apr 2021 07:00 Gradjagan Indonesia  0.1
11 Apr 2021 02:15 Kramat Indonesia  0.1
09 Apr 2021 19:00 Djagalaja Indonesia  0.1
09 Apr 2021 11:00 Riung Indonesia  0.1
09 Apr 2021 11:00 Boras Indonesia  0.1
09 Apr 2021 11:00 Posolik Indonesia  0.1
09 Apr 2021 11:00 Makitoenggoeng Indonesia  0.1
09 Apr 2021 18:45 Banjoebiroe Indonesia  0.1
09 Apr 2021 18:45 Cupel Indonesia  0.1
09 Apr 2021 18:45 Prancak Indonesia  0.1
09 Apr 2021 18:45 Negara Indonesia  0.1
09 Apr 2021 11:45 Umbulan Pepanggar Indonesia  0.1
11 Apr 2021 15:00 Sidaju Indonesia  0.1
09 Apr 2021 06:15 Paraing Liang Indonesia  0.1
09 Apr 2021 11:15 Laga Timor-Leste  0.1
11 Apr 2021 02:15 Merak Indonesia  0.1
09 Apr 2021 21:15 Kalianda Indonesia  0.1