Overall Green alert Tropical Cyclone for BERTHA-20
in United States
click on to select bulletin time
GDACS
Impact Single TC
Impact 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 (NOAA)
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
GDACS Current 46 km/h n.a. n.a. 0.5
GDACS 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)

Wind

46 km/h Current

Up to 250000 people in Tropical storm (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
Population in
Cat. 1 or higher
Countries
Green 1 27 May 2020 12:30 74 560 thousand No people United States
Green 2 27 May 2020 15:00 83 490 thousand No people United States
Green 3 27 May 2020 21:00 46 250 thousand No people United States

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 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
2 27 May 2020 15:00 Tropical storm 83 450000 people no people 33.3, -79.5 United States
GREEN
3 27 May 2020 21:00 Tropical depression 46 no people no people 34.4, -80.3 United States
GREEN
3 28 May 2020 06:00 Tropical depression 46 no people no people 37, -80.7 United States
GREEN
3 28 May 2020 18:00 Tropical depression 37 no people no people 41.7, -79.7 Canada
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.



Exposed population

Countries

Country
United States

Provinces

Region Province Country Population
South Carolina United States 3.6 million 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)
Hartsville Municipal HVS 111 Civ. Paved Yes 5000
Lee County 66 0
Carolina Pines Regional Medical Center 69 0
Curry 61 0
Lamar 53 0
Branhams 50 0
Tallon Field 58 0
Huggins Memorial 44 0
Mc Kay 41 0
Byrd Field 34 0
Lake City Municipal Cj Evans Field 24 0
Cockfield Aerodrome 25 0
Pocotaligo 34 0
Williamsburg County 20 Civ. Paved Yes 5000
Hemingway Stuckey 16 0
Jordan 11 0
Andrews Municipal ADR 8 Civ. Paved No 3000
Georgetown County GGE 12 Civ. Paved Yes 5000
Laurel Hill Farms 4 0
East Cooper 4 0
Raven's Run 2 0

Ports

Name LOCODE Country
Georgetown USGGE Wake Island

Dams

Reservoir Dam Name River Year
Lake Robinson Lake Robinson Dam Black Creek 1960

Nuclear plants

Name Country Reactors
H.B. ROBINSON UNITED STATES 1

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.

...

StormSurge

0.5 m

The maximum Storm surge height is  0.5m in McCellanville, United States. This height is estimated for 27 May 2020 14:30 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. 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 (117 locations). Calculation based on advisory number 2 of 27 May 2020 15:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
27 May 2020 14:30 McCellanville United States  0.5
27 May 2020 14:30 McClellanville United States  0.5
27 May 2020 14:30 Quarantine United States  0.5
27 May 2020 14:30 Clambank United States  0.5
27 May 2020 14:30 De Bordieu Colony United States  0.5
27 May 2020 16:30 Plantation Point United States  0.5
27 May 2020 16:30 Myrtle Beach United States  0.5
27 May 2020 16:30 Ocean Forest United States  0.5
27 May 2020 16:30 Arcadian Shores United States  0.5
27 May 2020 16:30 Atlantic Beach United States  0.5
27 May 2020 16:30 Ingram Beach United States  0.5
27 May 2020 16:30 North Myrtle Beach United States  0.5
27 May 2020 16:30 Nixons Crossroads United States  0.5
27 May 2020 16:30 Cherry Grove Beach United States  0.5
27 May 2020 16:30 Creekside United States  0.5
27 May 2020 16:30 Little River United States  0.5
27 May 2020 16:30 Calabash United States  0.5
27 May 2020 16:30 Shady Forest United States  0.5
27 May 2020 16:30 Sea Trail Plantation United States  0.5
27 May 2020 15:30 Pawleys Island United States  0.5
27 May 2020 15:30 Parkersville United States  0.5
27 May 2020 16:30 Briarcliffe Acres United States  0.5
27 May 2020 15:30 Hagley Estates United States  0.4
27 May 2020 15:30 True Blue United States  0.4
27 May 2020 15:30 Birds Nest United States  0.4
27 May 2020 15:30 Chapel Creek United States  0.4
27 May 2020 15:30 Annieville United States  0.4
27 May 2020 15:30 North Litchfield Beach United States  0.4
27 May 2020 15:30 Huntington Marsh United States  0.4
27 May 2020 15:30 Oak Hill United States  0.4
27 May 2020 15:30 Murrells Inlet United States  0.4
27 May 2020 15:30 Inlet Harbor United States  0.4
27 May 2020 15:30 Mount Gilead United States  0.4
27 May 2020 15:30 Garden City United States  0.4
27 May 2020 15:30 Deer Track Villas United States  0.4
27 May 2020 15:30 Crystal Lake United States  0.4
27 May 2020 15:30 Pebble Beach United States  0.4
27 May 2020 15:30 Myrtle Ridge United States  0.4
27 May 2020 16:30 Monogram United States  0.4
27 May 2020 15:30 Konig United States  0.4
27 May 2020 15:30 Surfside Beach United States  0.4
27 May 2020 16:30 Ocean Isle Beach United States  0.4
27 May 2020 16:30 Varnamtown United States  0.4
27 May 2020 16:30 Sunset Beach United States  0.4
27 May 2020 16:30 Brick Landing United States  0.4
27 May 2020 16:30 Secession United States  0.4
27 May 2020 14:30 Buck Hall United States  0.4
27 May 2020 14:30 Tibwin United States  0.4
27 May 2020 16:30 Coolvale United States  0.4
27 May 2020 16:30 Holden Beach United States  0.3
27 May 2020 16:30 Old Town United States  0.3
27 May 2020 16:30 Kendall Chapel United States  0.3
27 May 2020 16:30 Sheephead Rock United States  0.3
27 May 2020 16:30 Silver Lake United States  0.3
27 May 2020 16:30 Long Beach United States  0.3
27 May 2020 16:30 Fort Caswell United States  0.3
27 May 2020 16:30 Southport United States  0.3
27 May 2020 16:30 Myrtle Grove United States  0.3
27 May 2020 16:30 Saint James United States  0.3
27 May 2020 16:30 Yaupon Beach United States  0.3
27 May 2020 16:30 Caswell Beach United States  0.3
27 May 2020 16:30 Bald Head Island United States  0.2
27 May 2020 17:30 Kure Beach United States  0.2
27 May 2020 17:30 Carolina Beach United States  0.2
27 May 2020 17:30 Myrtle Sound United States  0.2
27 May 2020 23:30 Cedar Point United States  0.1
27 May 2020 23:30 Bogue United States  0.1
27 May 2020 23:30 Emerald Isle United States  0.1
27 May 2020 23:30 Indian Beach United States  0.1
27 May 2020 17:30 Winter Park United States  0.1
27 May 2020 17:30 Windemere United States  0.1
27 May 2020 17:30 Seagate United States  0.1
27 May 2020 17:30 Hampstead United States  0.1
27 May 2020 23:30 Bear Creek United States  0.1
27 May 2020 23:30 Cape Carteret United States  0.1
27 May 2020 23:30 Ocean United States  0.1
27 May 2020 23:30 Broad Creek United States  0.1
27 May 2020 23:30 Pine Knoll Shores United States  0.1
27 May 2020 23:30 Beaufort United States  0.1
27 May 2020 23:30 Lenoxville United States  0.1
27 May 2020 23:30 Straits United States  0.1
27 May 2020 23:30 Gloucester United States  0.1
27 May 2020 17:30 Masonboro United States  0.1
27 May 2020 17:30 Ogden United States  0.1
27 May 2020 17:30 Wrightsville Beach United States  0.1
27 May 2020 17:30 Bayshore United States  0.1
27 May 2020 23:30 Willis Landing United States  0.1
27 May 2020 23:30 Salter Path United States  0.1
27 May 2020 23:30 Carolina City United States  0.1
27 May 2020 23:30 Atlantic Beach United States  0.1
27 May 2020 23:30 Cape Lookout United States  0.1
27 May 2020 17:30 Kings Landing United States  0.1
27 May 2020 17:30 Topsail Beach United States  0.1
27 May 2020 17:30 Sloop Point United States  0.1
27 May 2020 23:30 Chadwick Acres United States  0.1
27 May 2020 23:30 Swansboro United States  0.1
27 May 2020 23:30 Bucks Corner United States  0.1
27 May 2020 23:30 Wildwood United States  0.1
27 May 2020 23:30 Hollywood United States  0.1
27 May 2020 23:30 Blades United States  0.1
27 May 2020 23:30 Crab Point Village United States  0.1
27 May 2020 23:30 Morehead City United States  0.1
28 May 2020 00:30 Harkers Island United States  0.1
27 May 2020 23:30 Otway United States  0.1
27 May 2020 23:30 Smyrna United States  0.1
27 May 2020 23:30 Marshallberg United States  0.1
27 May 2020 23:30 Williston United States  0.1
27 May 2020 23:30 Davis United States  0.1
27 May 2020 23:30 Stacy United States  0.1
27 May 2020 23:30 Masontown United States  0.1
27 May 2020 17:30 Barlowes United States  0.1
27 May 2020 17:30 Surf City United States  0.1
27 May 2020 17:30 Ocean City Beach United States  0.1
27 May 2020 17:30 Thomas Landing United States  0.1
27 May 2020 22:30 North Topsail Beach United States  0.1
27 May 2020 17:30 Sneads Ferry United States  0.1
27 May 2020 23:30 Duck Creek United States  0.1