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 GFS
Exposed countries Australia
Exposed population No people in Category 1 or higher
Maximum wind speed 94 km/h
Maximum storm surge 0.3 m (07 Apr 06:00 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
GFS Current 94 km/h 0.3 m 255 mm 0.5
GFS Overall 133 km/h 2.5 m 625 mm 0.5

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

Wind

133 km/h

Up to 2 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 07 Apr 2021 00:00 UTC
CategoryCountryPopulation 
Tropical StormAustralia1,694 

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 86 -
- - - - - Indonesia
GREEN 2 04 Apr 2021 18:00 97 -
- - - - - Indonesia
GREEN 3 05 Apr 2021 00:00 112 -
- - - - - Indonesia
GREEN 4 05 Apr 2021 06:00 108 -
- - - - - Indonesia
GREEN 5 05 Apr 2021 12:00 119 -
- - - - - Indonesia
GREEN 6 05 Apr 2021 18:00 133 -
- - - - - Indonesia
GREEN 7 06 Apr 2021 00:00 115 -
- - - - - Indonesia
GREEN 8 06 Apr 2021 06:00 108 - - - - - - -
GREEN 9 06 Apr 2021 12:00 90 - - - - - - -
GREEN 10 06 Apr 2021 18:00 119 - - - - - - -
GREEN 11 07 Apr 2021 00:00 166 -
- - - - - Australia




Impact estimation for the next 72h
Download:





Rain exposed population - AoIs

Estimations based on the bulletin of 07 Apr 2021 00:00 UTC
LevelCountryPopulation 
50-100 mmIndonesia, Australia378,486
+
Indonesia376,203 
Australia2,283 

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 12:00 274 280 thousand
- - - - Timor-Leste, Indonesia
Blue 2 04 Apr 2021 18:00 160 50 thousand
- - - - Indonesia
Blue 3 05 Apr 2021 00:00 155 10 thousand
- - - - Indonesia
Blue 4 05 Apr 2021 06:00 127 -
- - - - - Indonesia
Blue 5 05 Apr 2021 12:00 203 -
- - - - - Indonesia
Blue 6 05 Apr 2021 18:00 233 -
- - - - - Indonesia
Blue 7 06 Apr 2021 00:00 94 - - - - - - -
Blue 8 06 Apr 2021 06:00 204 -
- - - - - Indonesia
Blue 9 06 Apr 2021 12:00 99 - - - - - - -
Blue 10 06 Apr 2021 18:00 220 - - - - - - -
Blue 11 07 Apr 2021 00:00 447 -
- - - - - Indonesia, Australia




Impact estimation for the next 72h

StormSurge

0.3 m

The maximum Storm surge height is  0.3m in Karratha, Australia. This height is estimated for 07 Apr 2021 06:00 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 locations

Calculation based on the bulletin of 07 Apr 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
07 Apr 2021 06:00 Karratha Australia  0.3
07 Apr 2021 06:00 Port Hedland Australia  0.3
07 Apr 2021 06:00 Wedgefield Australia  0.3
07 Apr 2021 06:00 Dampier Australia  0.3
07 Apr 2021 06:00 Point Samson Australia  0.3
07 Apr 2021 06:00 Cossack Australia  0.3
07 Apr 2021 02:00 Broome Australia  0.3
07 Apr 2021 06:00 Wickham Australia  0.3
07 Apr 2021 02:00 Thangoo Australia  0.3
07 Apr 2021 06:00 Mardie Australia  0.3
07 Apr 2021 02:30 Pender Australia  0.3
07 Apr 2021 02:15 Pardoo Australia  0.2
07 Apr 2021 06:00 East Lewis I Australia  0.2
07 Apr 2021 02:45 Kollan I Australia  0.2
07 Apr 2021 00:30 Waterbank Australia  0.2
07 Apr 2021 00:00 Kennedys Cottage Australia  0.2
07 Apr 2021 04:00 Condon Australia  0.2
07 Apr 2021 00:30 Kandangan Indonesia  0.2
07 Apr 2021 00:30 Gresik Indonesia  0.2
07 Apr 2021 00:30 Pangkalan Indonesia  0.2
07 Apr 2021 00:30 Batoe Porong Indonesia  0.2
07 Apr 2021 00:30 Kebanjar Indonesia  0.2
07 Apr 2021 06:00 Ah Chong I Australia  0.2
07 Apr 2021 01:30 Derby Australia  0.2
07 Apr 2021 00:00 Baliga Indonesia  0.2
07 Apr 2021 00:00 Laboean Indonesia  0.2
07 Apr 2021 02:45 Sidaju Indonesia  0.1
07 Apr 2021 03:00 Aermata Indonesia  0.1
07 Apr 2021 03:00 Klampis Indonesia  0.1
07 Apr 2021 03:00 Sapulu Indonesia  0.1
07 Apr 2021 02:45 Ambunten-timu Indonesia  0.1
07 Apr 2021 02:45 Belukares Indonesia  0.1
07 Apr 2021 02:45 Sumenep Indonesia  0.1
07 Apr 2021 00:45 Tlagabiru Indonesia  0.1
07 Apr 2021 00:45 Banjoeates Indonesia  0.1
07 Apr 2021 00:45 Ketapang Indonesia  0.1
07 Apr 2021 01:30 Batuputihkenek Indonesia  0.1
07 Apr 2021 01:30 Lombang Indonesia  0.1
07 Apr 2021 01:30 Banraas Indonesia  0.1
07 Apr 2021 00:15 Taju Indonesia  0.1
07 Apr 2021 00:15 Bulumanis Indonesia  0.1
07 Apr 2021 00:15 Batangan Indonesia  0.1
07 Apr 2021 00:15 Rembang Indonesia  0.1
07 Apr 2021 01:15 Kelapang Indonesia  0.1
07 Apr 2021 00:45 Sokabana Indonesia  0.1
07 Apr 2021 03:00 Tambak Indonesia  0.1
07 Apr 2021 01:45 Sangkapura Indonesia  0.1
07 Apr 2021 01:15 Podang Indonesia  0.1
07 Apr 2021 01:15 Brondong Indonesia  0.1
07 Apr 2021 01:15 Semanding Indonesia  0.1
07 Apr 2021 00:00 Lasem Indonesia  0.1
07 Apr 2021 06:00 Onslow Australia  0.1
07 Apr 2021 01:00 Remen Indonesia  0.1
07 Apr 2021 01:00 Plosokere Indonesia  0.1
07 Apr 2021 01:00 Djenu Indonesia  0.1
07 Apr 2021 01:00 Tuban Indonesia  0.1
07 Apr 2021 01:00 Padangan-wetan Indonesia  0.1
07 Apr 2021 01:00 Kalipang Indonesia  0.1
07 Apr 2021 01:00 Lemanbang Indonesia  0.1
07 Apr 2021 01:00 Tambakbaja Indonesia  0.1
07 Apr 2021 00:00 Sidoardjo Indonesia  0.1
07 Apr 2021 00:00 Sumberkuning Indonesia  0.1
07 Apr 2021 05:00 Kencong Indonesia  0.1
07 Apr 2021 05:00 Lodjedjer Indonesia  0.1
07 Apr 2021 06:00 Blimbing Indonesia  0.1
07 Apr 2021 06:00 Dadapan Indonesia  0.1
07 Apr 2021 06:00 Banyuwangi Indonesia  0.1
07 Apr 2021 06:00 Banjuwangi Indonesia  0.1
07 Apr 2021 06:00 Soega Indonesia  0.1
07 Apr 2021 06:00 Gilimanuk Indonesia  0.1
07 Apr 2021 06:00 Penginoeman Indonesia  0.1
07 Apr 2021 06:00 Belimbingsari Indonesia  0.1
07 Apr 2021 06:00 Tjandikesuma Indonesia  0.1