Overall Green alert Tropical Cyclone for FOUR-20
in , Fiji, Vanuatu
12 Dec 2020 12 UTC
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  • 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 (12 Dec 16:00 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 65 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

      65 km/h Current Max.

      Up to 2900 people in Tropical Storm 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
        Green 5 12 Dec 2020 00:00 157 4 thousand No people
        Green 6 12 Dec 2020 06:00 157 350 thousand No people Fiji, Vanuatu
        Green 7 12 Dec 2020 12:00 65 3 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
          		 5 12 Dec 2020 00:00 Tropical storm 74 no people no people -14.8, 176.3
          GREEN
          		 6 12 Dec 2020 06:00 Tropical storm 65 no people <1000 people -15.8, 174.6
          GREEN
          		 7 12 Dec 2020 12:00 Tropical storm 65 no people no people -15.7, 173.1
          GREEN
          		 7 13 Dec 2020 00:00 Tropical depression 56 no people no people -15.6, 172.3
          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.

          Airports

          Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
          Rotuma RTA 8 Civ. Unpaved Yes 4900

          Ports

          Name LOCODE Country
          Rotuma FJRTA Fiji
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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 12 Dec 2020 16:00 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 (31 locations). Calculation based on advisory number 6 of 12 Dec 2020 06:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          12 Dec 2020 16:00 Tavua Fiji  0.2
          12 Dec 2020 19:00 Korovou Fiji  0.2
          11 Dec 2020 16:00 Korosi Fiji  0.2
          12 Dec 2020 22:00 Nalauwaki Fiji  0.1
          12 Dec 2020 23:00 Tavua Fiji  0.1
          11 Dec 2020 16:00 Naweni Fiji  0.1
          11 Dec 2020 16:00 Korotasere 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 19:00 Navuti 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
          12 Dec 2020 16:00 Rabulu 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
          11 Dec 2020 16:00 Lodoni Fiji  0.1
          12 Dec 2020 20:00 Lautoka Fiji  0.1
          11 Dec 2020 17:00 Ucunivanua Fiji  0.1
          12 Dec 2020 22:00 Solevu Fiji  0.1
          11 Dec 2020 16:00 Vunikura Fiji  0.1
          11 Dec 2020 16:00 Nanukuloa Fiji  0.1
          11 Dec 2020 17:00 Naimasimasi Fiji  0.1
          12 Dec 2020 18:00 Dromuna Fiji  0.1