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 162 km/h
Maximum storm surge 0.4 m (06 Apr 02:00 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 162 km/h 0.4 m 410 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 exposed population - AoIs

Estimations based on the bulletin of 06 Apr 2021 00:00 UTC
CategoryCountryPopulation 
Tropical StormIndonesia2,146 

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 00:00 180 -
- - - - - Indonesia




Impact estimation for the next 72h
Download:

Rainfall

787 mm

No people can be affected by rain higher than 100mm (see SSHS)





Rain exposed population - AoIs

Estimations based on the bulletin of 06 Apr 2021 00:00 UTC
LevelCountryPopulation 
50-100 mmIndonesia6,227 

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 00:00 721 -
- - - - - Indonesia




Impact estimation for the next 72h

StormSurge

0.4 m

The maximum Storm surge height is  0.4m in Pender, Australia. This height is estimated for 06 Apr 2021 02:00 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 06 Apr 2021 00:00 UTC
Alert Date (UTC) Name Country Storm surge height (m)
06 Apr 2021 02:00 Pender Australia  0.4
06 Apr 2021 06:00 Mardie Australia  0.3
06 Apr 2021 02:00 Kollan I Australia  0.3
06 Apr 2021 04:15 Dampier Australia  0.3
06 Apr 2021 04:15 Karratha Australia  0.3
06 Apr 2021 06:00 Derby Australia  0.3
06 Apr 2021 05:30 East Lewis I Australia  0.3
06 Apr 2021 06:00 Waterbank Australia  0.3
06 Apr 2021 06:00 Broome Australia  0.3
06 Apr 2021 04:00 Wickham Australia  0.2
06 Apr 2021 05:00 Point Samson Australia  0.2
06 Apr 2021 05:00 Cossack Australia  0.2
06 Apr 2021 06:00 Kennedys Cottage Australia  0.2
06 Apr 2021 03:45 Kencong Indonesia  0.2
06 Apr 2021 03:45 Lodjedjer Indonesia  0.2
06 Apr 2021 02:30 Port Hedland Australia  0.2
06 Apr 2021 02:30 Wedgefield Australia  0.2
06 Apr 2021 00:15 Thangoo Australia  0.2
06 Apr 2021 04:00 Oetefoe-besar Indonesia  0.2
06 Apr 2021 04:00 Besdale Indonesia  0.2
06 Apr 2021 04:00 Silain Indonesia  0.2
06 Apr 2021 04:00 Oetefoe-ketjil Indonesia  0.2
06 Apr 2021 04:00 Butuinan Indonesia  0.2
06 Apr 2021 04:00 Hala Indonesia  0.2
06 Apr 2021 04:00 Oeboeah Indonesia  0.2
06 Apr 2021 04:00 Hansisi Indonesia  0.2
06 Apr 2021 04:00 Naioni Indonesia  0.2
06 Apr 2021 04:00 Tenau Indonesia  0.2
06 Apr 2021 04:00 Manoelairoti Indonesia  0.2
06 Apr 2021 04:00 Namosain Indonesia  0.2
06 Apr 2021 04:00 Kupang Indonesia  0.2
06 Apr 2021 04:00 Soelamoe Indonesia  0.2
06 Apr 2021 04:00 Maoelafa Indonesia  0.2
06 Apr 2021 04:00 Pitai Indonesia  0.2
06 Apr 2021 03:00 Latuna Indonesia  0.2
06 Apr 2021 03:00 Bagang Indonesia  0.2
06 Apr 2021 03:00 Toebal Indonesia  0.2
06 Apr 2021 03:00 Noehawaila Indonesia  0.2
06 Apr 2021 03:00 Tamelabang Indonesia  0.2
06 Apr 2021 03:00 Kabir Indonesia  0.2
06 Apr 2021 03:00 Maria Indonesia  0.2
06 Apr 2021 03:00 Alor-kecil Indonesia  0.2
06 Apr 2021 00:00 Menango Indonesia  0.2
06 Apr 2021 00:00 Tandjungkarang Indonesia  0.2
06 Apr 2021 00:00 Telukbetung Indonesia  0.2
06 Apr 2021 00:00 Tarahan Indonesia  0.2
06 Apr 2021 03:00 Maringgai Indonesia  0.2
06 Apr 2021 02:30 Oenggae Indonesia  0.2
06 Apr 2021 02:30 Nordale Indonesia  0.2
06 Apr 2021 02:30 Korlo Indonesia  0.2
06 Apr 2021 02:30 Suaha Indonesia  0.2
06 Apr 2021 02:30 Keoen Indonesia  0.2
06 Apr 2021 02:30 Daeoerendale Indonesia  0.2
06 Apr 2021 02:30 Akle Indonesia  0.2
06 Apr 2021 02:30 Eahun Indonesia  0.2
06 Apr 2021 02:30 Pepela Indonesia  0.2
06 Apr 2021 02:30 Roti Indonesia  0.2
06 Apr 2021 02:30 Batuidu Indonesia  0.2
06 Apr 2021 02:30 Usulain Indonesia  0.2
06 Apr 2021 02:30 Oisina Indonesia  0.2
06 Apr 2021 02:30 Tablolong Indonesia  0.2
06 Apr 2021 02:00 Kramat Indonesia  0.2
06 Apr 2021 02:00 Cengkarengbelakang Indonesia  0.2
06 Apr 2021 02:00 Tipar Indonesia  0.2
06 Apr 2021 04:30 Maoe Ndai Indonesia  0.2
06 Apr 2021 04:30 Manoeran Indonesia  0.2
06 Apr 2021 04:30 Pigadjawa Indonesia  0.2
06 Apr 2021 04:30 Nangaboa Indonesia  0.2
06 Apr 2021 04:30 Waroe Kasoe Indonesia  0.2
06 Apr 2021 04:30 Wassa Indonesia  0.2
06 Apr 2021 00:15 Ngalu Indonesia  0.2
06 Apr 2021 00:15 Tapil Indonesia  0.2
06 Apr 2021 00:00 Kiluan Indonesia  0.2
06 Apr 2021 00:00 Kekatang Indonesia  0.2
06 Apr 2021 06:00 Pardoo Australia  0.2
06 Apr 2021 04:15 Ah Chong I Australia  0.2
06 Apr 2021 01:45 Balubuk Indonesia  0.2
06 Apr 2021 02:45 Domas Indonesia  0.2
06 Apr 2021 02:30 Tanara Indonesia  0.1
06 Apr 2021 02:30 Ketapang Indonesia  0.1
06 Apr 2021 02:30 Merak Indonesia  0.1
06 Apr 2021 06:00 Condon Australia  0.1
06 Apr 2021 02:45 Blimbing Indonesia  0.1
06 Apr 2021 02:45 Dadapan Indonesia  0.1
06 Apr 2021 02:45 Banyuwangi Indonesia  0.1
06 Apr 2021 02:45 Banjuwangi Indonesia  0.1
06 Apr 2021 02:45 Soega Indonesia  0.1
06 Apr 2021 02:45 Gilimanuk Indonesia  0.1
06 Apr 2021 02:45 Penginoeman Indonesia  0.1
06 Apr 2021 02:45 Belimbingsari Indonesia  0.1
06 Apr 2021 02:45 Tjandikesuma Indonesia  0.1
06 Apr 2021 05:45 Onslow Australia  0.1
06 Apr 2021 03:30 Seseh Indonesia  0.1
06 Apr 2021 03:30 Kuta Indonesia  0.1
06 Apr 2021 03:30 Djimbaran Indonesia  0.1
06 Apr 2021 03:30 Boealoe Indonesia  0.1
06 Apr 2021 03:30 Benua Indonesia  0.1
06 Apr 2021 03:30 Denpasar Indonesia  0.1
06 Apr 2021 03:30 Sukawati Indonesia  0.1
06 Apr 2021 03:30 Labih Indonesia  0.1
06 Apr 2021 03:30 Bandjarangkan Indonesia  0.1
06 Apr 2021 03:30 Lungkung Indonesia  0.1
06 Apr 2021 03:15 Ketapang Indonesia  0.1
06 Apr 2021 03:00 Manikin Indonesia  0.1
06 Apr 2021 00:00 Waingapu Indonesia  0.1
06 Apr 2021 00:00 Matawai Indonesia  0.1
06 Apr 2021 00:00 Pajeti Indonesia  0.1
06 Apr 2021 00:00 Lakohembi Indonesia  0.1
06 Apr 2021 01:15 Djagalaja Indonesia  0.1
06 Apr 2021 03:45 Pariti Indonesia  0.1
06 Apr 2021 03:45 Naimoeti Indonesia  0.1
06 Apr 2021 03:15 Tuakdale Indonesia  0.1
06 Apr 2021 04:00 Lalindi Indonesia  0.1
06 Apr 2021 00:00 Cilancang Indonesia  0.1
06 Apr 2021 00:00 Cirebon Indonesia  0.1
06 Apr 2021 00:00 Losan Indonesia  0.1
06 Apr 2021 02:45 Manoekangga Indonesia  0.1
06 Apr 2021 02:30 Petanahan Indonesia  0.1
06 Apr 2021 03:30 Lembongan Indonesia  0.1
06 Apr 2021 03:30 Tojapakeh Indonesia  0.1
06 Apr 2021 03:30 Batoemadeg Indonesia  0.1
06 Apr 2021 03:30 Batoemoenggoel Indonesia  0.1
06 Apr 2021 03:30 Tanglad Indonesia  0.1
06 Apr 2021 01:30 Tambajangan Indonesia  0.1
06 Apr 2021 01:30 Kajuwaru Indonesia  0.1
06 Apr 2021 03:30 Tjikawung Indonesia  0.1
06 Apr 2021 03:30 Sumur Indonesia  0.1
06 Apr 2021 03:30 Aerdjeruk Indonesia  0.1
06 Apr 2021 03:15 Bakau Indonesia  0.1
06 Apr 2021 02:45 Ajah Indonesia  0.1
06 Apr 2021 04:45 Kambaroe Indonesia  0.1
06 Apr 2021 03:15 Chilachap Indonesia  0.1
06 Apr 2021 03:15 Adipala Indonesia  0.1
06 Apr 2021 03:15 Binangoen Indonesia  0.1
06 Apr 2021 01:30 Pasirputih Indonesia  0.1
06 Apr 2021 01:30 Muaratjilamaja Indonesia  0.1
06 Apr 2021 01:30 Pedes Indonesia  0.1
06 Apr 2021 01:30 Sungaibuntu Indonesia  0.1
06 Apr 2021 03:30 Paraing Liang Indonesia  0.1
06 Apr 2021 03:30 Maoedoeloeng Indonesia  0.1
06 Apr 2021 02:15 Mundjungan Indonesia  0.1
06 Apr 2021 02:15 Tasikmadoe Indonesia  0.1
06 Apr 2021 02:15 Popoh Indonesia  0.1
06 Apr 2021 00:00 Karangampel Indonesia  0.1
06 Apr 2021 04:45 Vasse Australia  0.1
06 Apr 2021 04:45 Broadwater Australia  0.1
06 Apr 2021 04:45 Busselton Australia  0.1
06 Apr 2021 04:45 Wonnerup Australia  0.1
06 Apr 2021 04:45 Ludlow Australia  0.1
06 Apr 2021 03:15 Muntjar Indonesia  0.1
06 Apr 2021 00:00 Umbulan Pepanggar Indonesia  0.1
06 Apr 2021 02:00 Laboean Mapin Indonesia  0.1
06 Apr 2021 02:00 Alas Indonesia  0.1
06 Apr 2021 02:00 Pernang Indonesia  0.1
06 Apr 2021 04:00 Kalianda 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
06 Apr 2021 02:00 Sape Indonesia  0.1
06 Apr 2021 02:00 Toronaroe Indonesia  0.1
06 Apr 2021 02:00 Badjo Indonesia  0.1