Overall Green alert Tropical Cyclone for HENRI-21
in United States
20 Aug 2021 18 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone HENRI-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GFS
Exposed countries United States
Exposed population No people in Category 1 or higher
Maximum wind speed 108 km/h
Maximum storm surge 0.2 m (20 Aug 21:00 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
GFS Current 108 km/h 0.2 m 153 mm 0.5
GFS Overall 126 km/h 0.7 m 810 mm 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

TOP

Wind

126 km/h

Up to 610 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 20 Aug 2021 18:00 UTC
CategoryCountryPopulation 
Tropical StormUnited States605,523 

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Winds (km/h) Pop in Cat. 1 or higher TS Cat. 1 Cat. 2 Cat. 3 Cat. 4 Cat. 5 Countries
GREEN 1 16 Aug 2021 00:00 32 - - - - - - -
GREEN 2 16 Aug 2021 06:00 40 - - - - - - -
GREEN 3 16 Aug 2021 12:00 72 - - - - - - -
GREEN 4 16 Aug 2021 18:00 58 - - - - - - -
GREEN 5 17 Aug 2021 00:00 54 - - - - - - -
GREEN 6 17 Aug 2021 06:00 97 - - - - - - -
GREEN 7 17 Aug 2021 12:00 83 - - - - - - -
GREEN 8 17 Aug 2021 18:00 104 - - - - - - -
GREEN 9 18 Aug 2021 00:00 94 - - - - - - -
GREEN 10 18 Aug 2021 06:00 97 - - - - - - -
GREEN 11 18 Aug 2021 12:00 119 - - - - - - -
GREEN 12 18 Aug 2021 18:00 108 - - - - - - -
GREEN 13 19 Aug 2021 00:00 119 - - - - - - -
GREEN 14 19 Aug 2021 06:00 115 - - - - - - -
GREEN 15 19 Aug 2021 12:00 126 - - - - - - -
GREEN 16 19 Aug 2021 18:00 104 - - - - - - -
GREEN 17 20 Aug 2021 00:00 94 - - - - - - -
GREEN 18 20 Aug 2021 06:00 101 - - - - - - -
GREEN 19 20 Aug 2021 12:00 122 - - - - - - -
GREEN 20 20 Aug 2021 18:00 155 -
- - - - - United States
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 20 Aug 2021 18:00 UTC
LevelCountryPopulation 
100-250 mmUnited States3,338,317 
50-100 mmUnited States15,444,192 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 16 Aug 2021 00:00 24 - - - - - - -
Blue 2 16 Aug 2021 06:00 23 - - - - - - -
Blue 3 16 Aug 2021 12:00 124 - - - - - - -
Blue 4 16 Aug 2021 18:00 119 - - - - - - -
Blue 5 17 Aug 2021 00:00 35 - - - - - - -
Blue 6 17 Aug 2021 06:00 130 - - - - - - -
Blue 7 17 Aug 2021 12:00 77 - - - - - - -
Blue 8 17 Aug 2021 18:00 48 - - - - - - -
Blue 9 18 Aug 2021 00:00 86 - - - - - - -
Blue 10 18 Aug 2021 06:00 74 - - - - - - -
Blue 11 18 Aug 2021 12:00 134 - - - - - - -
Blue 12 18 Aug 2021 18:00 132 - - - - - - -
Blue 13 19 Aug 2021 00:00 126 -
- - - - - United States
Blue 14 19 Aug 2021 06:00 120 -
- - - - - United States
Blue 15 19 Aug 2021 12:00 139 -
- - - - - United States
Blue 16 19 Aug 2021 18:00 160 - - - - - - -
Blue 17 20 Aug 2021 00:00 141 - - - - - - -
Blue 18 20 Aug 2021 06:00 113 - - - - - - -
Blue 19 20 Aug 2021 12:00 221 - - - - - - -
Blue 20 20 Aug 2021 18:00 242 3.3 million
- - - - United States




Impact estimation for the next 72h
TOP

StormSurge

0.2 m

The maximum Storm surge height is  0.2m in Port Greville, Canada. This height is estimated for 20 Aug 2021 21:00 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.

Storm Surge Exposed population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 20 Aug 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Aug 2021 21:00 Port Greville Canada  0.2
20 Aug 2021 21:00 Canning Canada  0.2
20 Aug 2021 21:00 Scots Bay Canada  0.2
20 Aug 2021 21:00 Kingsport Canada  0.2
20 Aug 2021 21:00 Parrsboro Canada  0.2
20 Aug 2021 21:00 Hall Harbour Canada  0.2
20 Aug 2021 21:00 Spencer Island Canada  0.2
20 Aug 2021 21:30 Apple River Canada  0.2
20 Aug 2021 21:30 Advocate Harbour Canada  0.2
20 Aug 2021 21:15 Port Williams Canada  0.2
20 Aug 2021 19:45 Mahone Bay Canada  0.2
20 Aug 2021 19:45 La Have Canada  0.2
20 Aug 2021 19:45 Lunenburg Canada  0.2
20 Aug 2021 20:15 Gabarus Canada  0.2
20 Aug 2021 20:00 Alma Canada  0.2
20 Aug 2021 20:00 Cape Enrage Canada  0.2
20 Aug 2021 19:45 Hubbards Canada  0.2
20 Aug 2021 21:00 Morden Canada  0.1
20 Aug 2021 20:15 Fourchu Canada  0.1
20 Aug 2021 19:15 Larry's River Canada  0.1
20 Aug 2021 19:15 Half Island Cove Canada  0.1
20 Aug 2021 19:15 Whitehead Canada  0.1
20 Aug 2021 19:15 Port Hawkesbury Canada  0.1
20 Aug 2021 19:15 Point Tupper Canada  0.1
20 Aug 2021 19:15 Evanston Canada  0.1
20 Aug 2021 19:30 Arichat Canada  0.1
20 Aug 2021 19:30 Canso Canada  0.1
20 Aug 2021 19:30 D'Escousse Canada  0.1
20 Aug 2021 19:30 Petit-de-Grat Canada  0.1
20 Aug 2021 20:45 Margaretsville Canada  0.1
20 Aug 2021 20:30 L'Ardoise Canada  0.1
20 Aug 2021 20:30 Soldiers Cove Canada  0.1
20 Aug 2021 20:30 Grand River Canada  0.1
20 Aug 2021 19:30 Indian Harbour Canada  0.1
20 Aug 2021 20:30 Marshall Cove Canada  0.1
20 Aug 2021 20:30 Saint Peters Canada  0.1
20 Aug 2021 19:45 Prospect Canada  0.1
20 Aug 2021 19:30 Tangier Canada  0.1
20 Aug 2021 19:30 Sheet Harbour Canada  0.1
20 Aug 2021 20:00 Ingramport Canada  0.1
20 Aug 2021 20:00 French Village Canada  0.1
20 Aug 2021 18:30 Liscomb Canada  0.1
20 Aug 2021 18:30 Sherbrooke Canada  0.1
20 Aug 2021 18:30 Sonora Canada  0.1
20 Aug 2021 18:30 Bickerton West Canada  0.1
20 Aug 2021 20:30 Robbinston United States  0.1
20 Aug 2021 20:30 Perry United States  0.1
20 Aug 2021 20:30 Saint Andrews Canada  0.1
20 Aug 2021 20:30 Pleasant Point United States  0.1
20 Aug 2021 20:30 Richardson Canada  0.1
20 Aug 2021 20:30 L'Etete Canada  0.1
20 Aug 2021 19:15 Lawrencetown Canada  0.1
20 Aug 2021 19:15 Seaforth Canada  0.1
20 Aug 2021 19:15 East Chezzetcook Canada  0.1
20 Aug 2021 19:15 Musquodoboit Harbour Canada  0.1
20 Aug 2021 18:30 Isaacs Harbour Canada  0.1
20 Aug 2021 18:30 Goldboro Canada  0.1
20 Aug 2021 21:00 Saint Martins Canada  0.1
20 Aug 2021 19:45 Terence Bay Canada  0.1
20 Aug 2021 18:30 Ecum Secum Canada  0.1
20 Aug 2021 19:30 Sambro Canada  0.1
20 Aug 2021 20:30 Quoddy United States  0.1
20 Aug 2021 20:30 Eastport United States  0.1
20 Aug 2021 20:30 Welshpool Canada  0.1
20 Aug 2021 20:00 Eastern Passage Canada  0.1
20 Aug 2021 19:00 Kendalls Corner United States  0.1
20 Aug 2021 19:00 Camden United States  0.1
20 Aug 2021 19:00 Hayford Corner United States  0.1
20 Aug 2021 19:00 Holmes Mill United States  0.1
20 Aug 2021 19:00 Stevens Corner United States  0.1
20 Aug 2021 19:00 Simpsons Corner United States  0.1
20 Aug 2021 19:00 City Point United States  0.1
20 Aug 2021 19:00 Dog Island Corner United States  0.1
20 Aug 2021 19:00 Greenlaws Corner United States  0.1
20 Aug 2021 19:00 Lincolnville United States  0.1
20 Aug 2021 19:00 Herricks Corner United States  0.1
20 Aug 2021 19:00 Belfast United States  0.1
20 Aug 2021 19:00 Shermans Corner United States  0.1
20 Aug 2021 19:00 Bayside United States  0.1
20 Aug 2021 19:00 Searsport United States  0.1
20 Aug 2021 19:00 Dark Harbor United States  0.1
20 Aug 2021 19:00 Isleboro United States  0.1
20 Aug 2021 19:00 North Islesboro United States  0.1
20 Aug 2021 19:00 Castine United States  0.1
20 Aug 2021 19:00 Stockton Springs United States  0.1
20 Aug 2021 19:00 Sandy Point United States  0.1
20 Aug 2021 19:00 Goose Falls United States  0.1
20 Aug 2021 19:00 Fort George United States  0.1
20 Aug 2021 19:00 Cape Rosier United States  0.1
20 Aug 2021 19:00 West Penobscot United States  0.1
20 Aug 2021 19:00 Flat Landing United States  0.1
20 Aug 2021 19:30 Moose River Canada  0.1
20 Aug 2021 19:45 Port Dufferin Canada  0.1
20 Aug 2021 19:00 Halifax Canada  0.1
20 Aug 2021 19:00 Dartmouth Canada  0.1
20 Aug 2021 20:30 Saint George Canada  0.1
20 Aug 2021 19:30 Pulpit Harbor United States  0.1
20 Aug 2021 19:30 Goose Rocks United States  0.1
20 Aug 2021 19:30 Stover Corner United States  0.1
20 Aug 2021 19:30 Eggemoggin United States  0.1
20 Aug 2021 19:30 Herricks United States  0.1
20 Aug 2021 19:30 Sunset United States  0.1
20 Aug 2021 19:30 Deer Isle United States  0.1
20 Aug 2021 19:30 Black Corner United States  0.1
20 Aug 2021 19:30 Sargentville United States  0.1
20 Aug 2021 19:30 Stonington United States  0.1
20 Aug 2021 19:30 Parkers Cove Canada  0.1
20 Aug 2021 20:00 Petite Riviere Bridge Canada  0.1
20 Aug 2021 19:45 North Haven United States  0.1
20 Aug 2021 19:45 Lookout United States  0.1
20 Aug 2021 19:45 Isle au Haut United States  0.1
20 Aug 2021 19:45 Oceanville United States  0.1
20 Aug 2021 19:45 Mountainville United States  0.1
20 Aug 2021 19:45 Sedgwick United States  0.1
20 Aug 2021 19:45 Reach United States  0.1
20 Aug 2021 19:45 Sunshine United States  0.1
20 Aug 2021 19:45 Brooklin United States  0.1