Overall Green alert Tropical Cyclone for BERTHA-20
in United States
27 May 2020 12 UTC
click on to select bulletin time
  • GDACS NOAA
Impact Single TC
Impact based on all weather systems in the area

Impact

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

    Meteorological source GDACS
    Exposed countries United States
    Exposed population No people in Category 1 or higher
    Maximum wind speed 83 km/h
    Maximum storm surge 0.5 m (27 May 14:30 UTC)
    Vulnerability Low (United States)

    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 0.5 m n.a. 0.5
    Overall 83 km/h 0.5 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

      74 km/h Current Max.

      Up to 560000 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 27 May 2020 12:30 74 560 thousand No people United States

        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 27 May 2020 12:30 Tropical storm 74 no people no people 32.7, -79.4
          GREEN
          		 1 27 May 2020 18:00 Tropical depression 56 no people no people 33.2, -80 United States
          GREEN
          		 1 28 May 2020 06:00 Tropical depression 37 no people no people 35.8, -81 United States
          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
          United States

          Provinces

          Region Province Country
          South Carolina United States

          Populated places

          Name Region Province Country City class Population
          Charleston South Carolina United States City 97000 people
          North Charleston South Carolina United States City 80000 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)
          Raven's Run 2 0
          Laurel Hill Farms 4 0
          East Cooper 4 0
          Medical University of South Carolina 5 0
          Charleston AFB International CHS 14 Civ. Paved Yes 9000
          Mount Holly 17 0
          Berkeley County 23 0
          Crosswinds-Wilson (Private) 27 0

          Ports

          Name LOCODE Country
          Charleston USCHS Wake Island

          Dams

          Reservoir Dam Name River Year
          Pinopolis West Dam Cooper River 1942
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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

          0.5 m

          The maximum Storm surge height is  0.5m in Buck Hall, United States. This height is estimated for 27 May 2020 14:30 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 (77 locations). Calculation based on advisory number 1 of 27 May 2020 12:30:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          27 May 2020 14:30 Buck Hall United States  0.5
          27 May 2020 14:30 Tibwin United States  0.5
          27 May 2020 14:30 McCellanville United States  0.5
          27 May 2020 14:30 McClellanville United States  0.5
          27 May 2020 15:30 Quarantine United States  0.4
          27 May 2020 15:30 Clambank United States  0.4
          27 May 2020 15:30 De Bordieu Colony United States  0.4
          27 May 2020 15:30 Hagley Estates United States  0.3
          27 May 2020 15:30 True Blue United States  0.3
          27 May 2020 15:30 Birds Nest United States  0.3
          27 May 2020 15:30 Chapel Creek United States  0.3
          27 May 2020 15:30 Mount Gilead United States  0.3
          27 May 2020 15:30 Garden City United States  0.3
          27 May 2020 15:30 Pawleys Island United States  0.3
          27 May 2020 15:30 Parkersville United States  0.3
          27 May 2020 15:30 Deer Track Villas United States  0.3
          27 May 2020 15:30 Crystal Lake United States  0.3
          27 May 2020 15:30 Pebble Beach United States  0.3
          27 May 2020 15:30 Myrtle Ridge United States  0.3
          27 May 2020 15:30 Annieville United States  0.3
          27 May 2020 15:30 North Litchfield Beach United States  0.3
          27 May 2020 15:30 Huntington Marsh United States  0.3
          27 May 2020 15:30 Oak Hill United States  0.3
          27 May 2020 15:30 Inlet Harbor United States  0.3
          27 May 2020 15:30 Murrells Inlet United States  0.2
          27 May 2020 15:30 Konig United States  0.2
          27 May 2020 16:30 Plantation Point United States  0.2
          27 May 2020 16:30 Myrtle Beach United States  0.2
          27 May 2020 16:30 Ocean Forest United States  0.2
          27 May 2020 16:30 Arcadian Shores United States  0.2
          27 May 2020 16:30 Atlantic Beach United States  0.2
          27 May 2020 16:30 Ingram Beach United States  0.2
          27 May 2020 16:30 North Myrtle Beach United States  0.2
          27 May 2020 16:30 Nixons Crossroads United States  0.2
          27 May 2020 16:30 Cherry Grove Beach United States  0.2
          27 May 2020 16:30 Creekside United States  0.2
          27 May 2020 16:30 Little River United States  0.2
          27 May 2020 16:30 Calabash United States  0.2
          27 May 2020 16:30 Shady Forest United States  0.2
          27 May 2020 16:30 Sea Trail Plantation United States  0.2
          27 May 2020 16:30 Briarcliffe Acres United States  0.2
          27 May 2020 16:30 Monogram United States  0.2
          27 May 2020 15:30 Surfside Beach United States  0.2
          27 May 2020 15:30 Island of Palms United States  0.2
          27 May 2020 15:30 Porcher Bluff United States  0.2
          27 May 2020 15:30 Ten Mile United States  0.2
          27 May 2020 16:30 Ocean Isle Beach United States  0.2
          27 May 2020 16:30 Brick Landing United States  0.2
          27 May 2020 16:30 Varnamtown United States  0.2
          27 May 2020 14:30 Isle of Palms United States  0.2
          27 May 2020 16:30 Sunset Beach United States  0.2
          27 May 2020 16:30 Secession United States  0.2
          27 May 2020 16:30 Coolvale United States  0.2
          27 May 2020 16:30 Old Town United States  0.2
          27 May 2020 16:30 Kendall Chapel United States  0.2
          27 May 2020 16:30 Sheephead Rock United States  0.2
          27 May 2020 16:30 Silver Lake United States  0.2
          27 May 2020 16:30 Carolina Beach United States  0.2
          27 May 2020 15:30 Hobcaw Point United States  0.2
          27 May 2020 15:30 The Groves United States  0.2
          27 May 2020 15:30 Mount Pleasant United States  0.2
          27 May 2020 15:30 Fort Moultrie United States  0.2
          27 May 2020 15:30 Cassina Heights United States  0.2
          27 May 2020 15:30 Sullivan's Island United States  0.2
          27 May 2020 15:30 Palmetto Fort United States  0.2
          27 May 2020 16:30 Holden Beach United States  0.2
          27 May 2020 16:30 Fort Caswell United States  0.2
          27 May 2020 16:30 Southport United States  0.2
          27 May 2020 16:30 Myrtle Sound United States  0.2
          27 May 2020 16:30 Myrtle Grove United States  0.2
          27 May 2020 16:30 Masonboro United States  0.2
          27 May 2020 16:30 Long Beach United States  0.1
          27 May 2020 16:30 Saint James United States  0.1
          27 May 2020 16:30 Yaupon Beach United States  0.1
          27 May 2020 16:30 Caswell Beach United States  0.1
          27 May 2020 16:30 Bald Head Island United States  0.1
          27 May 2020 16:30 Kure Beach United States  0.1