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 108 km/h
Maximum storm surge 0.3 m (05 Apr 20:45 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 108 km/h 0.3 m 277 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 80 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 18:00 UTC
CategoryCountryPopulation 
Tropical StormIndonesia77765 

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 18:00 162 -
- - - - - Indonesia




Impact estimation for the next 72h
Download:





Rain exposed population - AoIs

Estimations based on the bulletin of 05 Apr 2021 18:00 UTC
LevelCountryPopulation 
100-250 mmIndonesia9377 
50-100 mmIndonesia19941 

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 1307 9 thousand
- - - - Indonesia




Impact estimation for the next 72h

StormSurge

0.3 m

The maximum Storm surge height is  0.3m in Derby, Australia. This height is estimated for 05 Apr 2021 20:45 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 05 Apr 2021 18:00 UTC
Alert Date (UTC) Name Country Storm surge height (m)
05 Apr 2021 20:45 Derby Australia  0.3
05 Apr 2021 20:00 Wickham Australia  0.3
05 Apr 2021 20:00 Point Samson Australia  0.3
05 Apr 2021 20:00 Cossack Australia  0.3
05 Apr 2021 20:00 Dampier Australia  0.3
05 Apr 2021 20:00 Karratha Australia  0.3
05 Apr 2021 19:15 Menango Indonesia  0.3
05 Apr 2021 19:15 Tandjungkarang Indonesia  0.3
05 Apr 2021 19:15 Telukbetung Indonesia  0.3
05 Apr 2021 19:15 Tarahan Indonesia  0.3
05 Apr 2021 19:30 Port Hedland Australia  0.2
05 Apr 2021 19:30 Wedgefield Australia  0.2
05 Apr 2021 19:15 Kiluan Indonesia  0.2
05 Apr 2021 19:15 Kekatang Indonesia  0.2
05 Apr 2021 18:00 Kencong Indonesia  0.2
05 Apr 2021 18:00 Lodjedjer Indonesia  0.2
05 Apr 2021 23:30 Kollan I Australia  0.2
05 Apr 2021 20:30 Mardie Australia  0.2
05 Apr 2021 20:00 East Lewis I Australia  0.2
06 Apr 2021 00:00 Broome Australia  0.2
05 Apr 2021 21:00 Ngalu Indonesia  0.2
05 Apr 2021 21:00 Tapil Indonesia  0.2
05 Apr 2021 20:00 Oenggae Indonesia  0.2
05 Apr 2021 20:00 Nordale Indonesia  0.2
05 Apr 2021 20:00 Korlo Indonesia  0.2
05 Apr 2021 20:00 Suaha Indonesia  0.2
05 Apr 2021 20:00 Keoen Indonesia  0.2
05 Apr 2021 20:00 Daeoerendale Indonesia  0.2
05 Apr 2021 20:00 Akle Indonesia  0.2
05 Apr 2021 20:00 Eahun Indonesia  0.2
05 Apr 2021 20:00 Pepela Indonesia  0.2
05 Apr 2021 20:00 Roti Indonesia  0.2
05 Apr 2021 20:00 Batuidu Indonesia  0.2
05 Apr 2021 20:00 Usulain Indonesia  0.2
05 Apr 2021 20:00 Oisina Indonesia  0.2
05 Apr 2021 20:00 Tablolong Indonesia  0.2
06 Apr 2021 00:00 Thangoo Australia  0.2
05 Apr 2021 19:15 Pender Australia  0.2
05 Apr 2021 23:45 Oetefoe-besar Indonesia  0.2
05 Apr 2021 23:45 Besdale Indonesia  0.2
05 Apr 2021 23:45 Silain Indonesia  0.2
05 Apr 2021 23:45 Oetefoe-ketjil Indonesia  0.2
05 Apr 2021 23:45 Butuinan Indonesia  0.2
05 Apr 2021 23:45 Hala Indonesia  0.2
05 Apr 2021 23:45 Oeboeah Indonesia  0.2
05 Apr 2021 23:45 Hansisi Indonesia  0.2
05 Apr 2021 23:45 Naioni Indonesia  0.2
05 Apr 2021 23:45 Tenau Indonesia  0.2
05 Apr 2021 23:45 Manoelairoti Indonesia  0.2
05 Apr 2021 23:45 Namosain Indonesia  0.2
05 Apr 2021 23:45 Kupang Indonesia  0.2
05 Apr 2021 23:45 Soelamoe Indonesia  0.2
05 Apr 2021 23:45 Maoelafa Indonesia  0.2
05 Apr 2021 23:45 Pitai Indonesia  0.2
05 Apr 2021 22:45 Waterbank Australia  0.2
05 Apr 2021 23:45 Maoe Ndai Indonesia  0.2
05 Apr 2021 23:45 Manoeran Indonesia  0.2
05 Apr 2021 23:45 Pigadjawa Indonesia  0.2
05 Apr 2021 23:45 Nangaboa Indonesia  0.2
05 Apr 2021 23:45 Waroe Kasoe Indonesia  0.2
05 Apr 2021 23:45 Wassa Indonesia  0.2
06 Apr 2021 00:00 Kennedys Cottage Australia  0.2
05 Apr 2021 23:15 Dalyellup Australia  0.2
05 Apr 2021 23:15 Bunbury Australia  0.2
05 Apr 2021 23:15 Picton Australia  0.2
05 Apr 2021 23:15 Eaton Australia  0.2
05 Apr 2021 23:15 Burragenup Australia  0.2
05 Apr 2021 23:15 Australind Australia  0.2
05 Apr 2021 19:00 Brassan Indonesia  0.1
05 Apr 2021 19:00 Muntjar Indonesia  0.1
05 Apr 2021 19:00 Blimbing Indonesia  0.1
05 Apr 2021 19:00 Dadapan Indonesia  0.1
05 Apr 2021 19:00 Banyuwangi Indonesia  0.1
05 Apr 2021 19:00 Banjuwangi Indonesia  0.1
05 Apr 2021 19:00 Gilimanuk Indonesia  0.1
05 Apr 2021 19:00 Penginoeman Indonesia  0.1
05 Apr 2021 19:00 Belimbingsari Indonesia  0.1
05 Apr 2021 19:00 Tjandikesuma Indonesia  0.1
05 Apr 2021 22:15 Onslow Australia  0.1
05 Apr 2021 21:30 Manikin Indonesia  0.1
05 Apr 2021 22:45 Binangoen Indonesia  0.1
05 Apr 2021 22:45 Ajah Indonesia  0.1
05 Apr 2021 21:00 Pajeti Indonesia  0.1
05 Apr 2021 21:00 Lakohembi Indonesia  0.1
05 Apr 2021 22:45 Vasse Australia  0.1
05 Apr 2021 22:45 Broadwater Australia  0.1
05 Apr 2021 22:45 Busselton Australia  0.1
05 Apr 2021 22:45 Wonnerup Australia  0.1
05 Apr 2021 22:45 Ludlow Australia  0.1
05 Apr 2021 23:30 Losan Indonesia  0.1
05 Apr 2021 20:45 Latuna Indonesia  0.1
05 Apr 2021 20:45 Bagang Indonesia  0.1
05 Apr 2021 20:45 Toebal Indonesia  0.1
05 Apr 2021 20:45 Noehawaila Indonesia  0.1
05 Apr 2021 20:45 Tamelabang Indonesia  0.1
05 Apr 2021 20:45 Kabir Indonesia  0.1
05 Apr 2021 20:45 Maria Indonesia  0.1
05 Apr 2021 20:45 Alor-kecil Indonesia  0.1
05 Apr 2021 18:15 Sidaju Indonesia  0.1
05 Apr 2021 18:15 Gresik Indonesia  0.1
05 Apr 2021 18:15 Pangkalan Indonesia  0.1
05 Apr 2021 18:15 Batoe Porong Indonesia  0.1
05 Apr 2021 23:45 Cilancang Indonesia  0.1
05 Apr 2021 23:45 Cirebon Indonesia  0.1
05 Apr 2021 22:45 Adipala Indonesia  0.1
05 Apr 2021 23:15 Gunyulgup Australia  0.1
05 Apr 2021 23:15 Yallingup Australia  0.1
05 Apr 2021 23:15 Dunsborough Australia  0.1
05 Apr 2021 23:15 Quindalup Australia  0.1
05 Apr 2021 23:30 Karangampel Indonesia  0.1
05 Apr 2021 18:15 Padangan-wetan Indonesia  0.1
05 Apr 2021 18:15 Kalipang Indonesia  0.1
05 Apr 2021 18:15 Lemanbang Indonesia  0.1
05 Apr 2021 18:15 Tambakbaja Indonesia  0.1
05 Apr 2021 23:15 Bulakamba Indonesia  0.1
05 Apr 2021 19:15 Umbulan Pepanggar Indonesia  0.1
05 Apr 2021 19:00 Kalianda Indonesia  0.1
06 Apr 2021 00:00 Waingapu Indonesia  0.1
06 Apr 2021 00:00 Matawai Indonesia  0.1
05 Apr 2021 18:15 Manoekangga Indonesia  0.1
05 Apr 2021 19:45 Tjikawung Indonesia  0.1
05 Apr 2021 19:45 Sumur Indonesia  0.1
05 Apr 2021 19:45 Aerdjeruk Indonesia  0.1
05 Apr 2021 19:30 Soega Indonesia  0.1
05 Apr 2021 18:15 Tanahkadukung Indonesia  0.1
05 Apr 2021 18:15 Baing Indonesia  0.1
05 Apr 2021 20:15 Mangkang-Kulan Indonesia  0.1
05 Apr 2021 20:15 Djomblang Indonesia  0.1
05 Apr 2021 20:15 Semarang Indonesia  0.1
05 Apr 2021 20:15 Karangroto Indonesia  0.1
05 Apr 2021 18:15 Lalindi Indonesia  0.1
05 Apr 2021 20:45 Ah Chong I Australia  0.1
05 Apr 2021 19:00 Huu Indonesia  0.1
05 Apr 2021 19:00 Madawa Indonesia  0.1
05 Apr 2021 19:00 Polo Indonesia  0.1
05 Apr 2021 22:45 Chilachap Indonesia  0.1
05 Apr 2021 21:30 Safety Bay Australia  0.1
05 Apr 2021 21:30 Rockingham Australia  0.1
05 Apr 2021 21:30 Fremantle Australia  0.1
05 Apr 2021 21:30 Warnbro Australia  0.1
05 Apr 2021 21:30 North Fremantle Australia  0.1
05 Apr 2021 21:30 East Fremantle Australia  0.1
05 Apr 2021 21:30 Coogee Australia  0.1
05 Apr 2021 21:30 Spearwood Australia  0.1
05 Apr 2021 21:30 Wattleup Australia  0.1
05 Apr 2021 21:15 Kendal Indonesia  0.1
05 Apr 2021 18:30 Kambaroe Indonesia  0.1
05 Apr 2021 18:15 Merapo Indonesia  0.1
05 Apr 2021 18:45 Petanahan Indonesia  0.1
05 Apr 2021 19:45 Tuakdale Indonesia  0.1
05 Apr 2021 19:45 Sekalac Indonesia  0.1
05 Apr 2021 18:15 Boedae Indonesia  0.1
05 Apr 2021 19:30 Karangsari Indonesia  0.1
05 Apr 2021 19:30 Taju Indonesia  0.1
05 Apr 2021 19:30 Bulumanis Indonesia  0.1
05 Apr 2021 23:15 Binningup Australia  0.1
05 Apr 2021 23:15 Myalup Australia  0.1
05 Apr 2021 23:15 Klampok Indonesia  0.1
05 Apr 2021 21:30 Lapatawang Indonesia  0.1
05 Apr 2021 21:30 Kirihei Indonesia  0.1
05 Apr 2021 21:30 Kampoeng Melolo Indonesia  0.1
05 Apr 2021 21:30 Melolo Indonesia  0.1
05 Apr 2021 21:30 Jawang Indonesia  0.1
05 Apr 2021 20:45 Maoedoeloeng Indonesia  0.1
05 Apr 2021 20:45 Sindangsari Indonesia  0.1
05 Apr 2021 20:45 Cijulang Indonesia  0.1
05 Apr 2021 20:45 Cikalong Indonesia  0.1
05 Apr 2021 20:45 Pangadaran Indonesia  0.1
05 Apr 2021 18:15 Remen Indonesia  0.1
05 Apr 2021 18:15 Plosokere Indonesia  0.1
05 Apr 2021 18:15 Djenu Indonesia  0.1
05 Apr 2021 18:15 Tuban Indonesia  0.1
05 Apr 2021 18:15 Semanding Indonesia  0.1
05 Apr 2021 18:15 Podang Indonesia  0.1
05 Apr 2021 20:30 Wedung Indonesia  0.1
05 Apr 2021 20:30 Kedungmalang Indonesia  0.1
05 Apr 2021 18:15 Brondong Indonesia  0.1
05 Apr 2021 23:15 Learmonth Australia  0.1
05 Apr 2021 18:15 Ege Indonesia  0.1
05 Apr 2021 19:30 Sape Indonesia  0.1
05 Apr 2021 19:30 Toronaroe Indonesia  0.1
05 Apr 2021 19:30 Badjo Indonesia  0.1
05 Apr 2021 23:15 Djagalaja Indonesia  0.1
06 Apr 2021 00:00 Ponta Acoilo Timor-Leste  0.1
06 Apr 2021 00:00 Dili Timor-Leste  0.1
06 Apr 2021 00:00 Met Naro Timor-Leste  0.1
05 Apr 2021 19:00 Banjoebiroe Indonesia  0.1
05 Apr 2021 19:00 Cupel Indonesia  0.1
05 Apr 2021 19:00 Prancak Indonesia  0.1
05 Apr 2021 19:00 Negara Indonesia  0.1
05 Apr 2021 20:15 Jepara Indonesia  0.1
05 Apr 2021 20:15 Bugel Indonesia  0.1
05 Apr 2021 20:15 Karanggondang Indonesia  0.1
05 Apr 2021 19:00 Kaliputjang Indonesia  0.1
05 Apr 2021 18:00 Mboe Eain Indonesia  0.1
05 Apr 2021 18:00 Nembrala Indonesia  0.1
05 Apr 2021 18:00 Nemperola Indonesia  0.1
05 Apr 2021 18:00 Abuan Indonesia  0.1
05 Apr 2021 18:00 Toedameda Indonesia  0.1
05 Apr 2021 18:00 Batutuah Indonesia  0.1
05 Apr 2021 18:00 Oeseda Indonesia  0.1
05 Apr 2021 18:30 Omatena Indonesia  0.1