Overall Green alert Tropical Cyclone for HENRI-21
in United States
20 Aug 2021 00 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 94 km/h
Maximum storm surge 0.2 m (20 Aug 04:00 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 94 km/h 0.2 m 141 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 160 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 00:00 UTC
CategoryCountryPopulation 
Tropical StormUnited States163,021 

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 00:00 158 -
- - - - - United States
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 20 Aug 2021 00:00 UTC
LevelCountryPopulation 
100-250 mmUnited States630,451 
50-100 mmCanada, United States1,667,592
+
Canada21,467 
United States1,646,125 

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 00:00 252 630 thousand
- - - - Canada, 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 04:00 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 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
20 Aug 2021 04:00 Port Greville Canada  0.2
20 Aug 2021 04:00 Canning Canada  0.2
20 Aug 2021 04:00 Scots Bay Canada  0.2
20 Aug 2021 04:00 Kingsport Canada  0.2
20 Aug 2021 04:00 Parrsboro Canada  0.2
20 Aug 2021 04:15 Hall Harbour Canada  0.2
20 Aug 2021 04:00 Port Williams Canada  0.2
20 Aug 2021 04:15 Spencer Island Canada  0.2
20 Aug 2021 05:15 Alma Canada  0.2
20 Aug 2021 05:15 Cape Enrage Canada  0.2
20 Aug 2021 05:15 Apple River Canada  0.2
20 Aug 2021 04:15 Advocate Harbour Canada  0.2
20 Aug 2021 02:00 Fourchu Canada  0.2
20 Aug 2021 02:00 Gabarus Canada  0.2
20 Aug 2021 03:15 Larry's River Canada  0.2
20 Aug 2021 03:15 Half Island Cove Canada  0.2
20 Aug 2021 03:15 Whitehead Canada  0.2
20 Aug 2021 02:45 Arichat Canada  0.2
20 Aug 2021 02:45 Canso Canada  0.2
20 Aug 2021 02:45 Petit-de-Grat Canada  0.2
20 Aug 2021 03:15 Evanston Canada  0.2
20 Aug 2021 03:15 D'Escousse Canada  0.2
20 Aug 2021 02:30 Saint Peters Canada  0.1
20 Aug 2021 02:30 L'Ardoise Canada  0.1
20 Aug 2021 02:30 Soldiers Cove Canada  0.1
20 Aug 2021 02:30 Grand River Canada  0.1
20 Aug 2021 05:15 Morden Canada  0.1
20 Aug 2021 03:15 Port Hawkesbury Canada  0.1
20 Aug 2021 03:15 Point Tupper Canada  0.1
20 Aug 2021 05:15 Margaretsville Canada  0.1
20 Aug 2021 05:15 Marshall Cove Canada  0.1
20 Aug 2021 05:00 Saint Martins Canada  0.1
20 Aug 2021 00:45 Laughing Waters United States  0.1
20 Aug 2021 00:45 Beixedon Estates United States  0.1
20 Aug 2021 00:45 North Sea United States  0.1
20 Aug 2021 00:45 Tuckahoe United States  0.1
20 Aug 2021 00:45 Reydon Shores United States  0.1
20 Aug 2021 00:45 Hampton Park United States  0.1
20 Aug 2021 00:45 Southampton United States  0.1
20 Aug 2021 00:45 Rose Grove United States  0.1
20 Aug 2021 00:45 Arshamonaque United States  0.1
20 Aug 2021 00:45 Greenport West United States  0.1
20 Aug 2021 00:45 Deerfield United States  0.1
20 Aug 2021 00:45 Greenport United States  0.1
20 Aug 2021 00:45 Cobb United States  0.1
20 Aug 2021 00:45 Flying Point United States  0.1
20 Aug 2021 00:45 Montclair Colony United States  0.1
20 Aug 2021 00:45 Watermill United States  0.1
20 Aug 2021 00:45 Shelter Island Heights United States  0.1
20 Aug 2021 00:45 East Marion United States  0.1
20 Aug 2021 00:45 Dering Harbor United States  0.1
20 Aug 2021 00:45 Noyack United States  0.1
20 Aug 2021 00:45 Hayground United States  0.1
20 Aug 2021 00:45 Shelter Island United States  0.1
20 Aug 2021 00:45 North Haven United States  0.1
20 Aug 2021 00:45 Bay Point United States  0.1
20 Aug 2021 00:45 Bridgehampton United States  0.1
20 Aug 2021 00:45 Mecox United States  0.1
20 Aug 2021 00:45 Sag Harbor United States  0.1
20 Aug 2021 00:45 Sagaponack United States  0.1
20 Aug 2021 00:45 Orient Point United States  0.1
20 Aug 2021 00:45 Northwest Landing United States  0.1
20 Aug 2021 00:45 Wainscott United States  0.1
20 Aug 2021 00:45 Alewife Brook Landing United States  0.1
20 Aug 2021 00:45 Hardscrabble United States  0.1
20 Aug 2021 00:45 Northwest Harbor United States  0.1
20 Aug 2021 00:45 Apaquogue United States  0.1
20 Aug 2021 00:45 Lafarges Landing United States  0.1
20 Aug 2021 00:45 East Hampton United States  0.1
20 Aug 2021 00:45 Threemile Harbor United States  0.1
20 Aug 2021 00:45 East Hampton North United States  0.1
20 Aug 2021 00:45 Maidstone Park United States  0.1
20 Aug 2021 00:45 Kingstown United States  0.1
20 Aug 2021 00:45 Springs United States  0.1
20 Aug 2021 00:45 Fireplace United States  0.1
20 Aug 2021 00:45 Amagansett United States  0.1
20 Aug 2021 00:45 Barnes Hole United States  0.1
20 Aug 2021 00:45 Abrams Landing United States  0.1
20 Aug 2021 00:30 Mattapoisett United States  0.1
20 Aug 2021 00:30 Crescent Beach United States  0.1
20 Aug 2021 00:30 Marion Center United States  0.1
20 Aug 2021 00:30 Alms House United States  0.1
20 Aug 2021 00:30 West Wareham United States  0.1
20 Aug 2021 00:30 South Wareham United States  0.1
20 Aug 2021 00:30 East Marion United States  0.1
20 Aug 2021 00:30 Briarwood Beach United States  0.1
20 Aug 2021 00:30 Wareham United States  0.1
20 Aug 2021 00:30 Piney Point Beach United States  0.1
20 Aug 2021 00:30 Hamilton Beach United States  0.1
20 Aug 2021 00:30 East Wareham United States  0.1
20 Aug 2021 00:30 Onset United States  0.1
20 Aug 2021 00:30 Quissett United States  0.1
20 Aug 2021 00:30 Sippowisset United States  0.1
20 Aug 2021 00:30 West Falmouth United States  0.1
20 Aug 2021 00:30 White Island Shores United States  0.1
20 Aug 2021 00:30 Pocasset United States  0.1
20 Aug 2021 00:30 Old Silver Beach United States  0.1
20 Aug 2021 00:30 North Falmouth United States  0.1
20 Aug 2021 00:30 Megansett United States  0.1
20 Aug 2021 00:30 Gray Gables United States  0.1
20 Aug 2021 00:30 Buzzards Bay United States  0.1
20 Aug 2021 00:30 Bourne United States  0.1
20 Aug 2021 00:30 Cataumet United States  0.1
20 Aug 2021 00:30 Falmouth United States  0.1
20 Aug 2021 00:30 Monument Beach United States  0.1
20 Aug 2021 00:30 Pondville United States  0.1
20 Aug 2021 00:30 Teaticket United States  0.1
20 Aug 2021 00:30 Bournedale United States  0.1
20 Aug 2021 00:30 East Falmouth United States  0.1
20 Aug 2021 00:30 Cedarville United States  0.1
20 Aug 2021 00:30 Ellisville United States  0.1
20 Aug 2021 00:30 Sagamore United States  0.1
20 Aug 2021 00:30 Waquoit United States  0.1
20 Aug 2021 00:30 Monomoscoy Island United States  0.1
20 Aug 2021 05:45 Mahone Bay Canada  0.1
20 Aug 2021 05:45 Lunenburg Canada  0.1
20 Aug 2021 06:00 Hubbards Canada  0.1
20 Aug 2021 03:00 Isaacs Harbour Canada  0.1
20 Aug 2021 03:00 Goldboro Canada  0.1
20 Aug 2021 05:30 La Have Canada  0.1
20 Aug 2021 03:15 Bickerton West Canada  0.1
20 Aug 2021 03:45 Liscomb Canada  0.1
20 Aug 2021 03:45 Sonora Canada  0.1
20 Aug 2021 00:00 Joppa United States  0.1
20 Aug 2021 00:00 South Seabrook United States  0.1
20 Aug 2021 00:00 Newbury Old Town United States  0.1
20 Aug 2021 00:00 Browns Point United States  0.1
20 Aug 2021 00:00 Plumbush United States  0.1
20 Aug 2021 00:00 The Willows United States  0.1
20 Aug 2021 00:00 Riverside United States  0.1
20 Aug 2021 00:00 Dunvegan Woods United States  0.1
20 Aug 2021 00:00 Hampton United States  0.1
20 Aug 2021 00:00 Camp Sea Haven United States  0.1
20 Aug 2021 00:00 Little Boars Head United States  0.1
20 Aug 2021 00:00 Elwyn Park United States  0.1
20 Aug 2021 00:00 Rye Beach United States  0.1
20 Aug 2021 00:00 Acorn Acres United States  0.1
20 Aug 2021 00:00 Foyes Corner United States  0.1
20 Aug 2021 00:00 Rye North Beach United States  0.1
20 Aug 2021 00:00 Fairhill Manor United States  0.1
20 Aug 2021 00:45 Naushon Station United States  0.1
20 Aug 2021 00:45 Woods Hole United States  0.1
20 Aug 2021 00:45 Makonikey United States  0.1
20 Aug 2021 00:45 West Chop United States  0.1