Overall Green alert Tropical Cyclone for FOUR-20
in , Fiji, Vanuatu
11 Dec 2020 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 FOUR-20 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Exposed countries , Fiji, Vanuatu
    Exposed population No people in Category 1 or higher
    Maximum wind speed 74 km/h
    Maximum storm surge 0.2 m (13 Dec 05:00 UTC)
    Vulnerability --

    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 148 km/h 0.2 m n.a. 0.5
    Overall 74 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

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    Wind

      148 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 11 Dec 2020 00:00 148 2 thousand No people
        Green 2 11 Dec 2020 06:00 148 2 thousand No people
        Green 3 11 Dec 2020 12:00 148 8 thousand No people
        Green 4 11 Dec 2020 18:00 148 9 thousand No people

        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 11 Dec 2020 00:00 Tropical storm 65 no people 2200 people -12.1, 179.9
          GREEN
          		 2 11 Dec 2020 06:00 Tropical storm 65 no people 2200 people -12.9, 178.9
          GREEN
          		 3 11 Dec 2020 12:00 Tropical storm 74 no people 2200 people -13, 178.4
          GREEN
          		 4 11 Dec 2020 18:00 Tropical storm 74 no people 6500 people -14.3, 177.9
          GREEN
          		 4 12 Dec 2020 06:00 Tropical storm 74 no people 6500 people -15.2, 175.9
          GREEN
          		 4 12 Dec 2020 18:00 Tropical storm 83 no people 6500 people -15.3, 174.5
          GREEN
          		 4 13 Dec 2020 06:00 Tropical storm 83 no people no people -15.4, 173.6
          GREEN
          		 4 13 Dec 2020 18:00 Tropical storm 93 no people no people -15.3, 173.3
          GREEN
          		 4 14 Dec 2020 18:00 Tropical storm 111 no people no people -15.5, 172.9
          GREEN
          		 4 15 Dec 2020 18:00 Category 1 130 no people <1000 people -16, 172.9
          GREEN
          		 4 16 Dec 2020 18:00 Category 1 148 no people no people -16.7, 173.8
          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.

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          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.

          ...

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          StormSurge

          0.2 m

          The maximum Storm surge height is  0.2m in Tavua, Fiji. This height is estimated for 13 Dec 2020 05:00 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 (32 locations). Calculation based on advisory number 4 of 11 Dec 2020 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          13 Dec 2020 05:00 Tavua Fiji  0.2
          12 Dec 2020 16:00 Korovou Fiji  0.2
          11 Dec 2020 16:00 Korosi Fiji  0.2
          11 Dec 2020 16:00 Naweni Fiji  0.1
          11 Dec 2020 16:00 Korotasere Fiji  0.1
          13 Dec 2020 07:00 Tavua Fiji  0.1
          13 Dec 2020 07:00 Nalauwaki Fiji  0.1
          11 Dec 2020 16:00 Nakarambo Fiji  0.1
          11 Dec 2020 16:00 Viani Fiji  0.1
          11 Dec 2020 16:00 Malake Fiji  0.1
          12 Dec 2020 14:00 Naimasimasi Fiji  0.1
          12 Dec 2020 14:00 Dromuna Fiji  0.1
          11 Dec 2020 16:00 Ucunivanua Fiji  0.1
          11 Dec 2020 16:00 Lao Fiji  0.1
          11 Dec 2020 16:00 Nawi Fiji  0.1
          11 Dec 2020 16:00 Matayalevu Fiji  0.1
          11 Dec 2020 16:00 Matacawalevu Fiji  0.1
          11 Dec 2020 16:00 Sisili Fiji  0.1
          11 Dec 2020 14:00 Elsee Fiji  0.1
          11 Dec 2020 14:00 Sumi Fiji  0.1
          11 Dec 2020 16:00 Soso Fiji  0.1
          11 Dec 2020 16:00 Somosomo Fiji  0.1
          11 Dec 2020 16:00 Ndrekeniwai Fiji  0.1
          11 Dec 2020 16:00 Biagunu Fiji  0.1
          12 Dec 2020 22:00 Yangganga Fiji  0.1
          12 Dec 2020 22:00 Navinggiri Fiji  0.1
          12 Dec 2020 22:00 Nawailevu Fiji  0.1
          11 Dec 2020 16:00 Lodoni Fiji  0.1
          12 Dec 2020 16:00 Lawaki Fiji  0.1
          12 Dec 2020 17:00 Navuti Fiji  0.1
          11 Dec 2020 16:00 Vunikura Fiji  0.1
          11 Dec 2020 16:00 Nanukuloa Fiji  0.1