Overall Green alert Tropical Cyclone for NEPARTAK-21
in Japan
24 Jul 2021 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 NEPARTAK-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Exposed countries Japan
    Exposed population No people in Category 1 or higher
    Maximum wind speed 83 km/h
    Maximum storm surge 0.1 m (28 Jul 05:00 UTC)
    Vulnerability Low (Japan)
    Landfall between
    27 Jul 2021 18:00 - 28 Jul 2021 18:00
    in Japan

    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 0.1 m n.a. 0.5
    Overall 83 km/h 0.1 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 no 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 23 Jul 2021 12:00 93 45.7 million No people Japan
        Green 2 23 Jul 2021 18:00 83 13.7 million No people Japan
        Green 3 24 Jul 2021 00:00 83 45.8 million No people Japan
        Green 4 24 Jul 2021 06:00 83 9.8 million No people Japan
        Green 5 24 Jul 2021 12:00 83 6.8 million No people Japan
        Green 6 24 Jul 2021 18:00 65 No people 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 23 Jul 2021 12:00 Tropical depression 56 no people no people 24, 148.6
          GREEN
          		 2 23 Jul 2021 18:00 Tropical storm 65 no people no people 24.7, 149.4
          GREEN
          		 3 24 Jul 2021 00:00 Tropical storm 65 no people no people 25, 149.5
          GREEN
          		 4 24 Jul 2021 06:00 Tropical storm 65 no people no people 26.2, 150
          GREEN
          		 5 24 Jul 2021 12:00 Tropical storm 65 no people no people 27.3, 150.3
          GREEN
          		 6 24 Jul 2021 18:00 Tropical storm 65 no people no people 28.1, 150.4
          GREEN
          		 6 25 Jul 2021 06:00 Tropical storm 65 no people no people 30, 150
          GREEN
          		 6 25 Jul 2021 18:00 Tropical depression 56 no people no people 31.9, 148.6
          GREEN
          		 6 26 Jul 2021 06:00 Tropical depression 56 no people no people 33.5, 146.6
          GREEN
          		 6 26 Jul 2021 18:00 Tropical depression 46 no people no people 35, 144.8
          GREEN
          		 6 27 Jul 2021 18:00 Tropical depression 56 no people no people 36.5, 142.5
          GREEN
          		 6 28 Jul 2021 18:00 Tropical depression 46 no people no people 38, 139.4 Japan
          GREEN
          		 6 29 Jul 2021 18:00 Tropical depression 56 no people no people 39, 137.8
          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.

          Airports

          Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
          Minami Torishima 7 Civ. Paved No 4500

          Ports

          Name LOCODE Country
          Minami Tori Japan
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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

          0.1 m

          The maximum Storm surge height is  0.1m in Naraha, Japan. This height is estimated for 28 Jul 2021 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 (18 locations). Calculation based on advisory number 6 of 24 Jul 2021 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          28 Jul 2021 05:00 Naraha Japan  0.1
          28 Jul 2021 05:00 Kami-Asamigawa Japan  0.1
          28 Jul 2021 06:00 Kami-Shigeoka Japan  0.1
          28 Jul 2021 05:00 Ide Japan  0.1
          28 Jul 2021 05:00 Shimo-Kitabo Japan  0.1
          28 Jul 2021 05:00 Arayashik Japan  0.1
          28 Jul 2021 05:00 Yotsukura Japan  0.1
          28 Jul 2021 06:00 Tomioka Japan  0.1
          28 Jul 2021 06:00 Oragahama Japan  0.1
          28 Jul 2021 05:00 Ohahama Japan  0.1
          28 Jul 2021 05:00 Ena Japan  0.1
          28 Jul 2021 05:00 Aratame Japan  0.1
          28 Jul 2021 05:00 Shimo-Takaku Japan  0.1
          28 Jul 2021 05:00 Omori Japan  0.1
          28 Jul 2021 05:00 Toyoma Japan  0.1
          28 Jul 2021 06:00 Bogoya Japan  0.1
          28 Jul 2021 06:00 Futaba Japan  0.1
          28 Jul 2021 06:00 Kiyohashi Japan  0.1