Overall Green alert Tropical Cyclone for DAHLIA-17
in Indonesia, Christmas Island
01 Dec 2017 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 DAHLIA-17 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Exposed countries Indonesia, Christmas Island
    Exposed population No people in Category 1 or higher
    Maximum wind speed 130 km/h
    Maximum storm surge 0.2 m (05 Dec 18:00 UTC)
    Vulnerability -- (Indonesia)

    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 130 km/h 0.2 m n.a. 0.5
    Overall 130 km/h 0.2 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

      130 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 30 Nov 2017 00:00 102 2 thousand No people Christmas Island
        Green 2 30 Nov 2017 06:00 93 160 thousand No people Indonesia, Christmas Island
        Green 3 30 Nov 2017 12:00 102 15.2 million No people Indonesia, Christmas Island, Australia
        Green 4 30 Nov 2017 18:00 102 14.9 million No people Indonesia, Christmas Island, Australia
        Green 5 01 Dec 2017 00:00 102 14.9 million No people Indonesia, Christmas Island
        Green 6 01 Dec 2017 06:00 111 14.9 million No people Indonesia, Christmas Island, Australia
        Green 7 01 Dec 2017 12:00 120 14.9 million No people Indonesia, Christmas Island, Australia
        Green 8 01 Dec 2017 18:00 130 14.9 million No people Indonesia, Christmas Island, 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 30 Nov 2017 00:00 Tropical storm 65 no people 1500 people -8.9, 104.4 Christmas Island
          GREEN
          		 2 30 Nov 2017 06:00 Tropical storm 65 no people 160000 people -8.9, 106.2 Christmas Island
          GREEN
          		 3 30 Nov 2017 12:00 Tropical storm 83 no people 15.1 million people -9.3, 107.6 Christmas Island
          GREEN
          		 4 30 Nov 2017 18:00 Tropical storm 83 no people no people -9.6, 108.1
          GREEN
          		 5 01 Dec 2017 00:00 Tropical storm 93 no people no people -9.7, 109
          GREEN
          		 6 01 Dec 2017 06:00 Tropical storm 93 no people no people -10.2, 109.6
          GREEN
          		 7 01 Dec 2017 12:00 Tropical storm 93 no people no people -10.5, 110.5
          GREEN
          		 8 01 Dec 2017 18:00 Tropical storm 102 no people no people -10.9, 110.7
          GREEN
          		 8 02 Dec 2017 06:00 Tropical storm 111 no people no people -11.5, 111
          GREEN
          		 8 02 Dec 2017 18:00 Category 1 120 no people no people -12.4, 111.2
          GREEN
          		 8 03 Dec 2017 06:00 Category 1 130 no people no people -13.7, 111
          GREEN
          		 8 03 Dec 2017 18:00 Category 1 130 no people no people -15.8, 110.6
          GREEN
          		 8 04 Dec 2017 18:00 Tropical storm 93 no people no people -19.1, 111.1
          GREEN
          		 8 05 Dec 2017 18:00 Tropical storm 65 no people 1900 people -20.6, 112.9 Australia
          GREEN
          		 8 06 Dec 2017 18:00 Tropical depression 46 no people no people -21, 114.7 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

          Critical infrastructure

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

          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

          0.2 m

          The maximum Storm surge height is  0.2m in Learmonth, Australia. This height is estimated for 05 Dec 2017 18:00 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 (9 locations). Calculation based on advisory number 8 of 01 Dec 2017 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          05 Dec 2017 18:00 Learmonth Australia  0.2
          05 Dec 2017 18:00 Mardie Australia  0.2
          05 Dec 2017 18:00 Wickham Australia  0.2
          05 Dec 2017 18:00 Point Samson Australia  0.2
          05 Dec 2017 18:00 Cossack Australia  0.2
          05 Dec 2017 18:00 Exmouth Australia  0.2
          05 Dec 2017 18:00 East Lewis I Australia  0.1
          05 Dec 2017 18:00 Glenroy Australia  0.1
          05 Dec 2017 18:00 Ah Chong I Australia  0.1