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 Indonesia
Exposed population No people in Category 1 or higher
Maximum wind speed 115 km/h
Maximum storm surge 0.4 m (05 Apr 12:00 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 115 km/h 0.4 m 220 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 180 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 05 Apr 2021 06:00 UTC
CategoryCountryPopulation 
Tropical StormIndonesia180382 

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 06:00 151 -
- - - - - Indonesia




Impact estimation for the next 72h
Download:





Rain exposed population - AoIs

Estimations based on the bulletin of 05 Apr 2021 06:00 UTC
LevelCountryPopulation 
100-250 mmIndonesia13863 
50-100 mmIndonesia, Timor-Leste95947
+
Indonesia66532 
Timor-Leste29415 

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 06:00 916 10 thousand
- - - - Indonesia, Timor-Leste




Impact estimation for the next 72h

StormSurge

0.4 m

The maximum Storm surge height is  0.4m in Derby, Australia. This height is estimated for 05 Apr 2021 12:00 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 05 Apr 2021 06:00 UTC
Alert Date (UTC) Name Country Storm surge height (m)
05 Apr 2021 12:00 Derby Australia  0.4
05 Apr 2021 06:45 Broome Australia  0.4
05 Apr 2021 06:00 Kollan I Australia  0.4
05 Apr 2021 06:45 Thangoo Australia  0.4
05 Apr 2021 06:45 Pardoo Australia  0.3
05 Apr 2021 09:15 Ngalu Indonesia  0.3
05 Apr 2021 09:15 Tapil Indonesia  0.3
05 Apr 2021 10:00 Menango Indonesia  0.3
05 Apr 2021 10:00 Tandjungkarang Indonesia  0.3
05 Apr 2021 10:00 Telukbetung Indonesia  0.3
05 Apr 2021 10:00 Tarahan Indonesia  0.3
05 Apr 2021 06:00 Waterbank Australia  0.2
05 Apr 2021 12:00 Wickham Australia  0.2
05 Apr 2021 12:00 Point Samson Australia  0.2
05 Apr 2021 12:00 Cossack Australia  0.2
05 Apr 2021 10:00 Kekatang Indonesia  0.2
05 Apr 2021 08:45 Pender Australia  0.2
05 Apr 2021 06:00 Kennedys Cottage Australia  0.2
05 Apr 2021 10:00 Kiluan Indonesia  0.2
05 Apr 2021 07:15 Condon Australia  0.2
05 Apr 2021 11:15 Pasuruan Indonesia  0.2
05 Apr 2021 11:15 Bayeman Indonesia  0.2
05 Apr 2021 12:00 Sidoardjo Indonesia  0.2
05 Apr 2021 10:15 Kencong Indonesia  0.2
05 Apr 2021 10:15 Lodjedjer Indonesia  0.2
05 Apr 2021 12:00 Dampier Australia  0.2
05 Apr 2021 12:00 Karratha Australia  0.2
05 Apr 2021 07:00 Learmonth Australia  0.2
05 Apr 2021 08:15 Oenggae Indonesia  0.2
05 Apr 2021 08:15 Nordale Indonesia  0.2
05 Apr 2021 08:15 Korlo Indonesia  0.2
05 Apr 2021 08:15 Suaha Indonesia  0.2
05 Apr 2021 08:15 Keoen Indonesia  0.2
05 Apr 2021 08:15 Daeoerendale Indonesia  0.2
05 Apr 2021 08:15 Akle Indonesia  0.2
05 Apr 2021 08:15 Eahun Indonesia  0.2
05 Apr 2021 08:15 Pepela Indonesia  0.2
05 Apr 2021 08:15 Roti Indonesia  0.2
05 Apr 2021 08:15 Batuidu Indonesia  0.2
05 Apr 2021 08:15 Usulain Indonesia  0.2
05 Apr 2021 08:15 Oisina Indonesia  0.2
05 Apr 2021 08:15 Tablolong Indonesia  0.2
05 Apr 2021 11:45 Kebanjar Indonesia  0.2
05 Apr 2021 11:45 Baliga Indonesia  0.2
05 Apr 2021 11:45 Laboean Indonesia  0.2
05 Apr 2021 11:45 Sumberkuning Indonesia  0.2
05 Apr 2021 12:00 Batoe Porong Indonesia  0.2
05 Apr 2021 09:30 Maoe Ndai Indonesia  0.2
05 Apr 2021 09:30 Manoeran Indonesia  0.2
05 Apr 2021 09:30 Pigadjawa Indonesia  0.2
05 Apr 2021 09:30 Nangaboa Indonesia  0.2
05 Apr 2021 09:30 Waroe Kasoe Indonesia  0.2
05 Apr 2021 09:30 Wassa Indonesia  0.2
05 Apr 2021 09:15 Sindangsari Indonesia  0.2
05 Apr 2021 09:15 Cijulang Indonesia  0.2
05 Apr 2021 09:15 Cikalong Indonesia  0.2
05 Apr 2021 09:15 Pangadaran Indonesia  0.2
05 Apr 2021 09:00 Blimbing Indonesia  0.2
05 Apr 2021 09:00 Dadapan Indonesia  0.2
05 Apr 2021 09:00 Banyuwangi Indonesia  0.2
05 Apr 2021 09:00 Banjuwangi Indonesia  0.2
05 Apr 2021 09:00 Soega Indonesia  0.2
05 Apr 2021 09:00 Gilimanuk Indonesia  0.2
05 Apr 2021 09:00 Penginoeman Indonesia  0.2
05 Apr 2021 09:00 Belimbingsari Indonesia  0.2
05 Apr 2021 09:00 Tjandikesuma Indonesia  0.2
05 Apr 2021 11:15 Sampang Indonesia  0.2
05 Apr 2021 11:30 Probolinggo Indonesia  0.2
05 Apr 2021 12:00 East Lewis I Australia  0.2
05 Apr 2021 11:30 Gending Indonesia  0.2
05 Apr 2021 11:30 Kraksaan Indonesia  0.2
05 Apr 2021 07:30 Binangoen Indonesia  0.2
05 Apr 2021 07:30 Ajah Indonesia  0.2
05 Apr 2021 07:30 Adipala Indonesia  0.2
05 Apr 2021 10:30 Huu Indonesia  0.2
05 Apr 2021 10:30 Madawa Indonesia  0.2
05 Apr 2021 10:30 Polo Indonesia  0.2
05 Apr 2021 06:00 Nembrala Indonesia  0.2
05 Apr 2021 06:00 Nemperola Indonesia  0.2
05 Apr 2021 06:00 Abuan Indonesia  0.2
05 Apr 2021 06:00 Mboe Eain Indonesia  0.2
05 Apr 2021 06:00 Toedameda Indonesia  0.2
05 Apr 2021 06:00 Batutuah Indonesia  0.2
05 Apr 2021 07:30 Chilachap Indonesia  0.2
05 Apr 2021 12:00 Pangkalan Indonesia  0.2
05 Apr 2021 06:00 Ulua Indonesia  0.2
05 Apr 2021 09:30 Klampok Indonesia  0.2
05 Apr 2021 09:30 Tegal Indonesia  0.2
05 Apr 2021 09:30 Wanasari Indonesia  0.2
05 Apr 2021 11:00 Galis Indonesia  0.2
05 Apr 2021 11:30 Karagajar Indonesia  0.2
05 Apr 2021 12:00 Kandangan Indonesia  0.2
05 Apr 2021 12:00 Gresik Indonesia  0.2
05 Apr 2021 11:00 Tjikawung Indonesia  0.2
05 Apr 2021 11:00 Sumur Indonesia  0.2
05 Apr 2021 11:00 Aerdjeruk Indonesia  0.2
05 Apr 2021 11:00 Babakancibeber Indonesia  0.2
05 Apr 2021 11:15 Prenduan Indonesia  0.1
05 Apr 2021 06:15 Ege Indonesia  0.1
05 Apr 2021 06:15 Kotahawoe Indonesia  0.1
05 Apr 2021 06:15 Boedae Indonesia  0.1
05 Apr 2021 06:15 Kota Boddo Indonesia  0.1
05 Apr 2021 06:15 Wawarei Indonesia  0.1
05 Apr 2021 06:15 Seba Indonesia  0.1
05 Apr 2021 06:15 Below Indonesia  0.1
05 Apr 2021 06:15 Baah Indonesia  0.1
05 Apr 2021 10:00 Losan Indonesia  0.1
05 Apr 2021 10:00 Bulakamba Indonesia  0.1
05 Apr 2021 10:30 Bangkulua Indonesia  0.1
05 Apr 2021 12:00 Ketapang Indonesia  0.1
05 Apr 2021 12:00 Kramat Indonesia  0.1
05 Apr 2021 12:00 Cengkarengbelakang Indonesia  0.1
05 Apr 2021 12:00 Domas Indonesia  0.1
05 Apr 2021 06:15 Merapo Indonesia  0.1
05 Apr 2021 06:00 Oeseda Indonesia  0.1
05 Apr 2021 09:30 Kaliputjang Indonesia  0.1
05 Apr 2021 12:00 Maringgai Indonesia  0.1
05 Apr 2021 10:45 Besuki Indonesia  0.1
05 Apr 2021 12:00 Tipar Indonesia  0.1
05 Apr 2021 12:00 Balubuk Indonesia  0.1
05 Apr 2021 10:15 Umbulan Pepanggar Indonesia  0.1
05 Apr 2021 08:15 Onslow Australia  0.1
05 Apr 2021 12:00 Merak Indonesia  0.1
05 Apr 2021 12:00 Tanara Indonesia  0.1
05 Apr 2021 10:45 Port Hedland Australia  0.1
05 Apr 2021 10:45 Wedgefield Australia  0.1
05 Apr 2021 10:45 Muntjar Indonesia  0.1
05 Apr 2021 10:30 Kalianda Indonesia  0.1
05 Apr 2021 10:45 Mandingan Indonesia  0.1
05 Apr 2021 11:30 Pedes Indonesia  0.1
05 Apr 2021 11:30 Sungaibuntu Indonesia  0.1
05 Apr 2021 11:30 Pasirputih Indonesia  0.1
05 Apr 2021 11:30 Muaratjilamaja Indonesia  0.1
05 Apr 2021 11:30 Djate Indonesia  0.1
05 Apr 2021 11:30 Bluto Indonesia  0.1
05 Apr 2021 09:15 Guring Indonesia  0.1
05 Apr 2021 09:15 Kota Agung Indonesia  0.1
05 Apr 2021 08:45 Latuna Indonesia  0.1
05 Apr 2021 08:45 Bagang Indonesia  0.1
05 Apr 2021 08:45 Toebal Indonesia  0.1
05 Apr 2021 08:45 Noehawaila Indonesia  0.1
05 Apr 2021 08:45 Tamelabang Indonesia  0.1
05 Apr 2021 08:45 Kabir Indonesia  0.1
05 Apr 2021 08:45 Maria Indonesia  0.1
05 Apr 2021 08:45 Alor-kecil Indonesia  0.1
05 Apr 2021 11:30 Saroka Indonesia  0.1
05 Apr 2021 11:30 Sumenep Indonesia  0.1
05 Apr 2021 11:30 Bundan Indonesia  0.1
05 Apr 2021 09:15 Petanahan Indonesia  0.1
05 Apr 2021 09:30 Oetefoe-besar Indonesia  0.1
05 Apr 2021 09:30 Besdale Indonesia  0.1
05 Apr 2021 09:30 Silain Indonesia  0.1
05 Apr 2021 09:30 Oetefoe-ketjil Indonesia  0.1
05 Apr 2021 09:30 Butuinan Indonesia  0.1
05 Apr 2021 09:30 Hala Indonesia  0.1
05 Apr 2021 09:30 Oeboeah Indonesia  0.1
05 Apr 2021 09:30 Hansisi Indonesia  0.1
05 Apr 2021 09:30 Naioni Indonesia  0.1
05 Apr 2021 09:30 Tenau Indonesia  0.1
05 Apr 2021 09:30 Manoelairoti Indonesia  0.1
05 Apr 2021 09:30 Namosain Indonesia  0.1
05 Apr 2021 09:30 Kupang Indonesia  0.1
05 Apr 2021 09:30 Soelamoe Indonesia  0.1
05 Apr 2021 09:30 Maoelafa Indonesia  0.1
05 Apr 2021 09:30 Pitai Indonesia  0.1
05 Apr 2021 10:30 Wara Indonesia  0.1
05 Apr 2021 10:30 Toronaroe Indonesia  0.1
05 Apr 2021 06:00 Dalyellup Australia  0.1
05 Apr 2021 06:00 Bunbury Australia  0.1
05 Apr 2021 06:00 Binningup Australia  0.1
05 Apr 2021 06:00 Myalup Australia  0.1
05 Apr 2021 06:00 Picton Australia  0.1
05 Apr 2021 06:00 Eaton Australia  0.1
05 Apr 2021 06:00 Burragenup Australia  0.1
05 Apr 2021 06:00 Australind Australia  0.1
05 Apr 2021 11:30 Gedugan Indonesia  0.1
05 Apr 2021 06:00 Mardie Australia  0.1
05 Apr 2021 06:00 Husdale Indonesia  0.1
05 Apr 2021 10:45 Sape Indonesia  0.1
05 Apr 2021 10:45 Badjo Indonesia  0.1
05 Apr 2021 10:00 Kolitjaah Indonesia  0.1
05 Apr 2021 11:15 Makasar Indonesia  0.1
05 Apr 2021 11:15 Manda Indonesia  0.1
05 Apr 2021 11:45 Situbondo Indonesia  0.1
05 Apr 2021 10:30 Tampoena Wo Indonesia  0.1
05 Apr 2021 10:30 Wasalangka Indonesia  0.1
05 Apr 2021 10:00 Tjiteureup Indonesia  0.1
05 Apr 2021 09:15 Lakohembi Indonesia  0.1
05 Apr 2021 11:00 Labuhan Indonesia  0.1
05 Apr 2021 11:00 Kaduperasi Indonesia  0.1
05 Apr 2021 11:15 Brassan Indonesia  0.1
05 Apr 2021 11:30 Djangdjangan Indonesia  0.1
05 Apr 2021 09:45 Pringgabaja Indonesia  0.1
05 Apr 2021 09:45 Lombok Indonesia  0.1
05 Apr 2021 11:00 Pajeti Indonesia  0.1
05 Apr 2021 08:30 Carnarvon Australia  0.1
05 Apr 2021 06:00 Namodale Indonesia  0.1
05 Apr 2021 08:00 Glenroy Australia  0.1
05 Apr 2021 06:00 Bando Indonesia  0.1
05 Apr 2021 09:15 Manikin Indonesia  0.1
05 Apr 2021 11:00 Bakau Indonesia  0.1
05 Apr 2021 11:00 Ketapang Indonesia  0.1
05 Apr 2021 08:30 Lapatawang Indonesia  0.1
05 Apr 2021 08:30 Kirihei Indonesia  0.1
05 Apr 2021 08:30 Kampoeng Melolo Indonesia  0.1
05 Apr 2021 08:30 Melolo Indonesia  0.1
05 Apr 2021 08:30 Jawang Indonesia  0.1
05 Apr 2021 11:30 Kesambirampak Indonesia  0.1
05 Apr 2021 09:15 Vasse Australia  0.1
05 Apr 2021 09:15 Broadwater Australia  0.1
05 Apr 2021 09:15 Busselton Australia  0.1
05 Apr 2021 09:15 Wonnerup Australia  0.1
05 Apr 2021 09:15 Ludlow Australia  0.1