Overall Green alert Tropical Cyclone for ILSA-23
in Australia
11 Apr 2023 18 UTC
click on to select bulletin time
  • GDACS JTWC
Impact Single TC
Impact based on all weather systems in the area

Impact

    Tropical Cyclone ILSA-23 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Exposed countries Australia
    Exposed population 3 thousand in Category 1 or higher
    Maximum wind speed 241 km/h
    Maximum storm surge 0.7 m (08 Apr 23:00 UTC)
    Vulnerability Low (Australia)
    Landfall between
    13 Apr 2023 06:00 - 13 Apr 2023 18:00
    in 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
    Current 231 km/h 0.4 m n.a. 0.5
    Overall 241 km/h 0.7 m n.a. 0.5

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

    TOP

    Wind

      231 km/h Current Max.

      Up to no people in Category 1 strength or higher (see SSHS)

      Impact Timeline

        Alert N° Date (UTC) Max Winds (km/h) Population in
        Tropical Storm or higher        		 Population in
        Cat 1. or higher        		 Countries
        Green 1 08 Apr 2023 18:00 259 20 thousand 2 thousand Australia
        Green 2 09 Apr 2023 00:00 241 20 thousand 2 thousand Australia
        Green 4 09 Apr 2023 12:00 241 20 thousand Few people Australia
        Green 5 09 Apr 2023 18:00 241 20 thousand 2 thousand Australia
        Green 6 10 Apr 2023 00:00 231 20 thousand 1 thousand Australia
        Green 8 10 Apr 2023 12:00 213 3 thousand Few people Australia
        Green 9 10 Apr 2023 18:00 222 4 thousand Few people Australia
        Green 10 11 Apr 2023 00:00 241 2 thousand No people Australia
        Green 11 11 Apr 2023 06:00 222 40 thousand Few people Australia
        Green 12 11 Apr 2023 12:00 213 50 thousand No people Australia
        Green 13 11 Apr 2023 18:00 231 50 thousand No people Australia

        Bulletin Timeline

          Alert N° Date (UTC) Category
          (SSHS)           		Max winds
          (km/h)           		Population in
          Cat.1 or higher           		Population in
          Tropical Storm
          or higher           		Location (lat, lon) Countries
          GREEN
          		 1 08 Apr 2023 18:00 Tropical storm 65 no people no people -11.3, 128.2
          GREEN
          		 2 09 Apr 2023 00:00 Tropical storm 74 no people no people -11.9, 127.2
          GREEN
          		 4 09 Apr 2023 12:00 Tropical storm 83 no people no people -12.8, 125.1
          GREEN
          		 5 09 Apr 2023 18:00 Tropical storm 83 no people no people -13.3, 124.2
          GREEN
          		 6 10 Apr 2023 00:00 Tropical storm 93 no people no people -13.6, 123.4
          GREEN
          		 8 10 Apr 2023 12:00 Tropical storm 83 no people no people -13.4, 122.5
          GREEN
          		 9 10 Apr 2023 18:00 Tropical storm 93 no people no people -13.7, 122.1
          GREEN
          		 10 11 Apr 2023 00:00 Tropical storm 93 no people no people -14, 121.4
          GREEN
          		 11 11 Apr 2023 06:00 Tropical storm 102 no people no people -14.3, 121.8
          GREEN
          		 12 11 Apr 2023 12:00 Category 1 120 no people no people -15.3, 120.9
          GREEN
          		 13 11 Apr 2023 18:00 Category 1 148 no people no people -15.7, 120.5
          GREEN
          		 13 12 Apr 2023 06:00 Category 2 176 no people no people -16.5, 119.7
          GREEN
          		 13 12 Apr 2023 18:00 Category 4 213 no people 14000 people -17.5, 119.2
          GREEN
          		 13 13 Apr 2023 06:00 Category 4 231 no people 19000 people -18.7, 119.3
          GREEN
          		 13 13 Apr 2023 18:00 Category 4 213 no people 3000 people -20.1, 121 Australia
          GREEN
          		 13 14 Apr 2023 18:00 Tropical storm 74 no people 33000 people -23.2, 129.8 Australia
          GREEN
          		 13 15 Apr 2023 18:00 Tropical depression 46 no people no people -25.3, 139.7 Australia
          Actual track of the current bulletin
          The alert for forecast greater than 3 days is limited to Orange level.
          Download:



          Exposed population - AoIs

          Exposed population in the potential affected countries, provinces and populated places

          Countries

          Country Population in Tropical Storm or higher strength
          Australia no people

          Provinces

          Region Province Country Population in Tropical Storm or higher strength
          Western Australia Australia no people
          Northern Territory Australia no people

          Critical infrastructure

          Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

          Airports

          Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
          Wallal WLA unknown 0
          Mandora MQA unknown 0
          TOP

          Rainfall

          Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

          ...

          TOP

          StormSurge

          0.7 m

          The maximum Storm surge height is  0.7m in Pulaukumbang, Indonesia. This height is estimated for 08 Apr 2023 23:00 UTC .

          The JRC has developed an experimental global storm surge model. 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.

          Locations affected by Storm surge (127 locations). Calculation based on advisory number 1 of 08 Apr 2023 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          08 Apr 2023 23:00 Pulaukumbang Indonesia  0.7
          08 Apr 2023 23:00 Sukadana Indonesia  0.6
          08 Apr 2023 23:00 Siduk Indonesia  0.6
          08 Apr 2023 23:00 Sungaitulak Indonesia  0.6
          08 Apr 2023 23:00 Soengaitoelak Indonesia  0.5
          08 Apr 2023 23:00 Satai Indonesia  0.5
          11 Apr 2023 11:00 Pender Australia  0.5
          08 Apr 2023 23:00 Minjilang Australia  0.4
          08 Apr 2023 22:00 Telukawah Indonesia  0.4
          09 Apr 2023 00:00 Sanindara Indonesia  0.4
          11 Apr 2023 12:00 Derby Australia  0.4
          08 Apr 2023 22:00 Sabui Indonesia  0.4
          09 Apr 2023 01:00 Naoer Indonesia  0.4
          12 Apr 2023 18:00 Condon Australia  0.4
          09 Apr 2023 00:00 Pagatan Indonesia  0.3
          09 Apr 2023 00:00 Agatebi Indonesia  0.3
          09 Apr 2023 01:00 Sajengga Indonesia  0.3
          09 Apr 2023 17:00 Larrakeyah Australia  0.3
          08 Apr 2023 22:00 Koealasapo Indonesia  0.3
          08 Apr 2023 23:00 Bapuju Indonesia  0.3
          08 Apr 2023 23:00 Bahaur Indonesia  0.3
          08 Apr 2023 23:00 Kualalupak Indonesia  0.3
          08 Apr 2023 23:00 Aluhaluh Indonesia  0.3
          08 Apr 2023 23:00 Tambakkarangan Indonesia  0.3
          08 Apr 2023 23:00 Tabanio Indonesia  0.3
          08 Apr 2023 23:00 Bawahalajung Indonesia  0.3
          11 Apr 2023 06:00 Kollan I Australia  0.3
          09 Apr 2023 00:00 Sakaoeni Indonesia  0.3
          09 Apr 2023 17:00 Fannie Bay Australia  0.3
          09 Apr 2023 17:00 Parap Australia  0.3
          09 Apr 2023 17:00 Darwin Australia  0.3
          09 Apr 2023 17:00 Ludmilla Australia  0.3
          09 Apr 2023 17:00 Bagot Australia  0.3
          08 Apr 2023 23:00 Pelang Indonesia  0.3
          08 Apr 2023 23:00 Pesaguan Indonesia  0.3
          09 Apr 2023 00:00 Setiroek Indonesia  0.3
          09 Apr 2023 17:00 Nightcliff Australia  0.3
          08 Apr 2023 23:00 Ketapang Indonesia  0.3
          08 Apr 2023 21:00 Semisir Indonesia  0.3
          08 Apr 2023 23:00 Sungaitapah Indonesia  0.3
          09 Apr 2023 00:00 Pagetan Indonesia  0.3
          12 Apr 2023 15:00 Broome Australia  0.3
          09 Apr 2023 01:00 Aoem Indonesia  0.3
          09 Apr 2023 01:00 Moegoetira Indonesia  0.3
          12 Apr 2023 16:00 Thangoo Australia  0.3
          09 Apr 2023 01:00 Tambani Indonesia  0.3
          08 Apr 2023 23:00 Mutua Indonesia  0.3
          08 Apr 2023 23:00 Tandjoengselaka Indonesia  0.3
          08 Apr 2023 22:00 Loentji Indonesia  0.2
          12 Apr 2023 15:00 Waterbank Australia  0.2
          09 Apr 2023 01:00 Kamboeriami Indonesia  0.2
          09 Apr 2023 01:00 Kinara Indonesia  0.2
          09 Apr 2023 19:00 Soengaibali Indonesia  0.2
          09 Apr 2023 00:00 Pagarantimun Indonesia  0.2
          12 Apr 2023 15:00 Kennedys Cottage Australia  0.2
          09 Apr 2023 23:00 Leanyer Australia  0.2
          09 Apr 2023 02:00 Tanam Indonesia  0.2
          08 Apr 2023 21:00 Pagatan Indonesia  0.2
          08 Apr 2023 21:00 Salinau Indonesia  0.2
          08 Apr 2023 21:00 Semaras Indonesia  0.2
          08 Apr 2023 21:00 Okaoka Indonesia  0.2
          08 Apr 2023 21:00 Tungkaranasam Indonesia  0.2
          08 Apr 2023 23:00 Dolatanden Indonesia  0.2
          08 Apr 2023 21:00 Teloekkapalpetjah Indonesia  0.2
          09 Apr 2023 02:00 Pamandali Indonesia  0.2
          09 Apr 2023 02:00 Tioro Indonesia  0.2
          09 Apr 2023 02:00 Kembano Indonesia  0.2
          09 Apr 2023 02:00 Tampo Indonesia  0.2
          09 Apr 2023 02:00 Kolono Indonesia  0.2
          09 Apr 2023 02:00 Napabalana Indonesia  0.2
          09 Apr 2023 02:00 Rumba Indonesia  0.2
          09 Apr 2023 02:00 Koroni Indonesia  0.2
          09 Apr 2023 02:00 Bangbong Indonesia  0.2
          09 Apr 2023 02:00 Roode Huk Indonesia  0.2
          09 Apr 2023 02:00 Tuetue Indonesia  0.2
          09 Apr 2023 02:00 Walue Indonesia  0.2
          08 Apr 2023 23:00 Kandangan Indonesia  0.2
          09 Apr 2023 02:00 Labuban-Tobelo Indonesia  0.2
          09 Apr 2023 00:00 Batakam Indonesia  0.2
          12 Apr 2023 18:00 East Lewis I Australia  0.2
          08 Apr 2023 23:00 Pulaukutjing Indonesia  0.2
          09 Apr 2023 02:00 Kaisweri Indonesia  0.2
          09 Apr 2023 15:00 Kladar Indonesia  0.2
          09 Apr 2023 15:00 Sabon Indonesia  0.2
          09 Apr 2023 15:00 Tor Indonesia  0.2
          09 Apr 2023 02:00 Numbulwar Australia  0.2
          09 Apr 2023 11:00 Taroea Anim Indonesia  0.2
          08 Apr 2023 20:00 Paparoe Indonesia  0.2
          08 Apr 2023 20:00 Rori Indonesia  0.2
          08 Apr 2023 20:00 Koeroedoe Indonesia  0.2
          12 Apr 2023 18:00 Wickham Australia  0.2
          12 Apr 2023 18:00 Point Samson Australia  0.2
          12 Apr 2023 18:00 Cossack Australia  0.2
          08 Apr 2023 23:00 Sawarangan Indonesia  0.2
          09 Apr 2023 20:00 Sekapoeng Indonesia  0.2
          09 Apr 2023 00:00 Segintong Indonesia  0.2
          09 Apr 2023 01:00 Saga Indonesia  0.2
          09 Apr 2023 16:00 Tapianbalai Indonesia  0.2
          08 Apr 2023 20:00 Nhulunbuy Australia  0.2
          08 Apr 2023 21:00 Boenati Indonesia  0.2
          09 Apr 2023 02:00 Sege Indonesia  0.2
          08 Apr 2023 20:00 Basada Indonesia  0.1
          08 Apr 2023 20:00 Kobroor Indonesia  0.1
          08 Apr 2023 20:00 Kedjabi Indonesia  0.1
          08 Apr 2023 20:00 Rabal Indonesia  0.1
          08 Apr 2023 20:00 Kangoerma Indonesia  0.1
          09 Apr 2023 02:00 Alyangula Australia  0.1
          08 Apr 2023 20:00 Karwai Indonesia  0.1
          08 Apr 2023 20:00 Keojabi Indonesia  0.1
          09 Apr 2023 02:00 Inanwatatan Indonesia  0.1
          09 Apr 2023 02:00 Masara Indonesia  0.1
          08 Apr 2023 23:00 Lakara Indonesia  0.1
          08 Apr 2023 23:00 Toroboeloe Indonesia  0.1
          09 Apr 2023 01:00 Tanisepta Indonesia  0.1
          09 Apr 2023 01:00 Ranibo Indonesia  0.1
          09 Apr 2023 01:00 Degen Indonesia  0.1
          09 Apr 2023 05:00 Wan Indonesia  0.1
          09 Apr 2023 05:00 Konerau Indonesia  0.1
          09 Apr 2023 05:00 Pasirputih Indonesia  0.1
          08 Apr 2023 23:00 Padang Indonesia  0.1
          09 Apr 2023 00:00 Roliai Indonesia  0.1
          09 Apr 2023 00:00 Tinangea Indonesia  0.1
          09 Apr 2023 06:00 Komoran Indonesia  0.1
          09 Apr 2023 10:00 Birab Indonesia  0.1
          12 Apr 2023 18:00 Ah Chong I Australia  0.1
          09 Apr 2023 05:00 Selemit Indonesia  0.1
          09 Apr 2023 10:00 Otsjanep Indonesia  0.1