Overall Green alert Tropical Cyclone for VICKY-20
in Niue, American Samoa, Samoa
21 Feb 2020 18 UTC
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  • GDACS JTWC
Impact Single TC
Impact based on all weather systems in the area

Impact

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

    Meteorological source GDACS
    Exposed countries Niue, American Samoa, Samoa
    Exposed population No people in Category 1 or higher
    Maximum wind speed 83 km/h
    Maximum storm surge 0.2 m (20 Feb 22:00 UTC)
    Vulnerability High (Niue)

    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 83 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 230000 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 20 Feb 2020 18:00 83 230 thousand No people Samoa, American Samoa, Niue
        Green 2 21 Feb 2020 00:00 83 230 thousand No people American Samoa, Niue
        Green 3 21 Feb 2020 06:00 74 230 thousand No people American Samoa, Niue
        Green 4 21 Feb 2020 12:00 74 230 thousand No people American Samoa, Niue
        Green 5 21 Feb 2020 18:00 65 230 thousand No people Niue, American Samoa

        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 20 Feb 2020 18:00 Tropical storm 83 no people no people -14.3, -171.5
          GREEN
          		 2 21 Feb 2020 00:00 Tropical storm 83 no people 69000 people -14.8, -170.8 Samoa
          GREEN
          		 3 21 Feb 2020 06:00 Tropical storm 74 no people no people -15.7, -170.7
          GREEN
          		 4 21 Feb 2020 12:00 Tropical storm 74 no people no people -16.4, -170.3
          GREEN
          		 5 21 Feb 2020 18:00 Tropical storm 65 no people 1200 people -17.3, -169.7 Niue
          GREEN
          		 5 22 Feb 2020 06:00 Tropical storm 65 no people 1200 people -19, -169.7 Niue
          GREEN
          		 5 22 Feb 2020 18:00 Tropical depression 56 no people no people -20.4, -170.1
          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
          Niue
          American Samoa
          Samoa

          Provinces

          Region Province Country
          Niue Niue
          American Samoa American Samoa
          Samoa Samoa

          Populated places

          Name Region Province Country City class Population
          Alofi Niue Capital <1000 people
          Taputimu American Samoa City <1000 people
          Futiga American Samoa City <1000 people
          Mesepa American Samoa City <1000 people
          Amouli American Samoa City <1000 people
          Alofau American Samoa City <1000 people
          Alao American Samoa City <1000 people
          Aoa American Samoa City <1000 people
          Tula American Samoa City <1000 people
          Utulei American Samoa City <1000 people
          Fagasa American Samoa City <1000 people
          Pago Pago American Samoa Capital 4200 people
          Afono American Samoa City <1000 people
          Leloaloa American Samoa City <1000 people
          Apia Samoa Capital 40000 people

          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)
          Niue Hanan IUE 64 Civ. Paved Yes 7600
          Pago Pago International PPG 9 Civ. Paved Yes 9000
          Lalomalava LAV unknown 0
          Faleolo APW 18 Civ. Paved Yes 8800
          Maota MXS unknown 0

          Ports

          Name LOCODE Country
          Alofi Niue
          Pago Pago ASPPG American Samoa
          Apia WSAPW Samoa
          Apia Samoa
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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 Fagasa, American Samoa. This height is estimated for 20 Feb 2020 22:00 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 (49 locations). Calculation based on advisory number 5 of 21 Feb 2020 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          20 Feb 2020 22:00 Fagasa American Samoa  0.2
          20 Feb 2020 22:00 Pago Pago American Samoa  0.2
          20 Feb 2020 19:00 Lotofago Samoa  0.2
          22 Feb 2020 05:00 Mutalau Niue  0.2
          22 Feb 2020 08:00 Hakupu Niue  0.2
          22 Feb 2020 08:00 Lakepa Niue  0.2
          22 Feb 2020 08:00 Liku Niue  0.2
          20 Feb 2020 22:00 Siufaga American Samoa  0.1
          20 Feb 2020 22:00 Fagatogo American Samoa  0.1
          20 Feb 2020 22:00 Atuu American Samoa  0.1
          20 Feb 2020 22:00 Utulei American Samoa  0.1
          20 Feb 2020 22:00 Fagaalu American Samoa  0.1
          20 Feb 2020 22:00 Leloaloa American Samoa  0.1
          20 Feb 2020 22:00 Aua American Samoa  0.1
          20 Feb 2020 22:00 Lauliifou American Samoa  0.1
          20 Feb 2020 22:00 Afono American Samoa  0.1
          20 Feb 2020 22:00 Masefau American Samoa  0.1
          20 Feb 2020 22:00 Auto American Samoa  0.1
          20 Feb 2020 22:00 Fagaitua American Samoa  0.1
          20 Feb 2020 22:00 Alofau American Samoa  0.1
          20 Feb 2020 19:00 Amaile Samoa  0.1
          22 Feb 2020 08:00 Alofi Niue  0.1
          22 Feb 2020 08:00 Avatele Niue  0.1
          20 Feb 2020 19:00 Poutasi Samoa  0.1
          20 Feb 2020 23:00 Aoa American Samoa  0.1
          20 Feb 2020 23:00 Amouli American Samoa  0.1
          20 Feb 2020 23:00 Onenoa American Samoa  0.1
          20 Feb 2020 23:00 Alao American Samoa  0.1
          20 Feb 2020 23:00 Tula American Samoa  0.1
          20 Feb 2020 23:00 Aunuu American Samoa  0.1
          20 Feb 2020 22:00 Poloa American Samoa  0.1
          20 Feb 2020 22:00 Amanave American Samoa  0.1
          20 Feb 2020 22:00 Seetaga American Samoa  0.1
          20 Feb 2020 22:00 Fagamalo American Samoa  0.1
          20 Feb 2020 22:00 Amaluia American Samoa  0.1
          20 Feb 2020 22:00 Leone American Samoa  0.1
          20 Feb 2020 22:00 Vailoatai American Samoa  0.1
          20 Feb 2020 22:00 Taputimu American Samoa  0.1
          20 Feb 2020 22:00 Aasu American Samoa  0.1
          20 Feb 2020 22:00 Futiga American Samoa  0.1
          20 Feb 2020 22:00 Pavaiai American Samoa  0.1
          20 Feb 2020 22:00 Vaitogi American Samoa  0.1
          20 Feb 2020 22:00 Iliili American Samoa  0.1
          20 Feb 2020 22:00 Mesepa American Samoa  0.1
          20 Feb 2020 22:00 Faleniu American Samoa  0.1
          20 Feb 2020 19:00 Siumu Samoa  0.1
          20 Feb 2020 19:00 Solosolo Samoa  0.1
          20 Feb 2020 22:00 Nuuuli American Samoa  0.1
          20 Feb 2020 22:00 Matuu American Samoa  0.1