Overall Orange alert Tropical Cyclone for GATI-20
in Somalia
21 Nov 2020 18 UTC
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  • GDACS JTWC
Impact Single TC
Impact based on all weather systems in the area

Impact

    Tropical Cyclone GATI-20 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Glide number: TC-2020-000232-SOM
    Exposed countries Somalia
    Exposed population 40 thousand in Category 1 or higher
    Maximum wind speed 185 km/h
    Maximum storm surge 0.4 m (22 Nov 18:00 UTC)
    Vulnerability High (Somalia)
    Landfall between
    22 Nov 2020 06:00 - 22 Nov 2020 18:00
    in Somalia

    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 74 km/h 0.4 m n.a. 0.5
    Overall 185 km/h 0.4 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

      74 km/h Current Max.

      Up to 380000 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 21 Nov 2020 18:00 74 380 thousand No people Somalia

        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 21 Nov 2020 18:00 Tropical storm 65 no people no people 10.8, 55.6
          GREEN
          		 1 22 Nov 2020 06:00 Tropical storm 74 no people 160000 people 10.6, 53.2
          GREEN
          		 1 22 Nov 2020 18:00 Tropical storm 65 no people 380000 people 10.5, 51 Somalia
          GREEN
          		 1 23 Nov 2020 06:00 Tropical depression 46 no people no people 10.7, 49.1 Somalia
          GREEN
          		 1 23 Nov 2020 18:00 Tropical depression 37 no people no people 10.9, 47.9 Somalia
          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
          Somalia

          Provinces

          Region Province Country
          Bari Somalia
          Sanaag Somalia

          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)
          Scusciuban CMS 342 Civ. Unpaved No 6500
          Bosaso BSA 6 Civ. Unpaved No 3400

          Ports

          Name LOCODE Country
          Dante (Ras Hafun) SODAN Somalia
          Handa Somalia
          Bosaso Somalia
          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.

          ...

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          StormSurge

          0.4 m

          The maximum Storm surge height is  0.4m in Sala Gon, Somalia. This height is estimated for 22 Nov 2020 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 (11 locations). Calculation based on advisory number 1 of 21 Nov 2020 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          22 Nov 2020 18:00 Sala Gon Somalia  0.4
          22 Nov 2020 17:00 Hurdiyo Somalia  0.3
          22 Nov 2020 17:00 Deh-Cabo Somalia  0.2
          22 Nov 2020 17:00 Xaafuun Somalia  0.2
          22 Nov 2020 19:00 Ascira Somalia  0.2
          22 Nov 2020 18:00 Cadayo Somalia  0.2
          22 Nov 2020 17:00 Bargaal Somalia  0.1
          22 Nov 2020 17:00 Mach Somalia  0.1
          22 Nov 2020 18:00 Boho Somalia  0.1
          22 Nov 2020 19:00 Caluula Somalia  0.1
          22 Nov 2020 18:00 Aiesloho Somalia  0.1