Overall Green alert Tropical Cyclone for HENRI-21
in United States
21 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 97 km/h
Maximum storm surge 0.2 m (21 Aug 03:30 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
GFS Current 97 km/h 0.2 m 121 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 120 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 21 Aug 2021 00:00 UTC
CategoryCountryPopulation 
Tropical StormUnited States122,647 

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 18:00 108 - - - - - - -
GREEN 21 21 Aug 2021 00:00 137 -
- - - - - United States
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 21 Aug 2021 00:00 UTC
LevelCountryPopulation 
100-250 mmUnited States917,297 
50-100 mmUnited States5,829,411 

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 18:00 153 - - - - - - -
Blue 21 21 Aug 2021 00:00 284 920 thousand
- - - - United States




Impact estimation for the next 72h
TOP

StormSurge

0.2 m

The maximum Storm surge height is  0.2m in Port Hawkesbury, Canada. This height is estimated for 21 Aug 2021 03:30 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.

Storm Surge Exposed population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 21 Aug 2021 00:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
21 Aug 2021 03:30 Port Hawkesbury Canada  0.2
21 Aug 2021 03:30 Point Tupper Canada  0.2
21 Aug 2021 03:30 Evanston Canada  0.2
21 Aug 2021 03:30 Half Island Cove Canada  0.2
21 Aug 2021 03:30 Larry's River Canada  0.2
21 Aug 2021 03:30 Whitehead Canada  0.2
21 Aug 2021 03:30 Arichat Canada  0.2
21 Aug 2021 03:30 Canso Canada  0.2
21 Aug 2021 03:30 D'Escousse Canada  0.2
21 Aug 2021 03:30 Petit-de-Grat Canada  0.2
21 Aug 2021 04:30 Fourchu Canada  0.2
21 Aug 2021 04:30 Gabarus Canada  0.2
21 Aug 2021 04:00 Saint Peters Canada  0.1
21 Aug 2021 04:00 L'Ardoise Canada  0.1
21 Aug 2021 04:00 Soldiers Cove Canada  0.1
21 Aug 2021 04:00 Grand River Canada  0.1
21 Aug 2021 04:15 Sonora Canada  0.1
21 Aug 2021 04:15 Bickerton West Canada  0.1
21 Aug 2021 04:15 Isaacs Harbour Canada  0.1
21 Aug 2021 04:15 Goldboro Canada  0.1
21 Aug 2021 05:15 Liscomb Canada  0.1
21 Aug 2021 05:15 Sherbrooke Canada  0.1
21 Aug 2021 06:00 Margaretsville Canada  0.1
21 Aug 2021 06:00 Morden Canada  0.1
21 Aug 2021 06:00 Centreville Canada  0.1
21 Aug 2021 06:00 Weymouth Canada  0.1
21 Aug 2021 06:00 Waterford Canada  0.1
21 Aug 2021 06:00 Hall Harbour Canada  0.1
21 Aug 2021 06:00 Port Greville Canada  0.1
21 Aug 2021 06:00 Scots Bay Canada  0.1
21 Aug 2021 06:00 Parrsboro Canada  0.1
21 Aug 2021 04:30 Port Dufferin Canada  0.1
21 Aug 2021 04:30 Moose River Canada  0.1
21 Aug 2021 04:30 Ecum Secum Canada  0.1
21 Aug 2021 06:00 Spencer Island Canada  0.1
21 Aug 2021 06:00 Marshall Cove Canada  0.1
21 Aug 2021 06:00 Apple River Canada  0.1
21 Aug 2021 06:00 Advocate Harbour Canada  0.1
21 Aug 2021 06:00 Canning Canada  0.1
21 Aug 2021 06:00 Kingsport Canada  0.1
21 Aug 2021 01:15 Laughing Waters United States  0.1
21 Aug 2021 01:15 Beixedon Estates United States  0.1
21 Aug 2021 01:15 North Sea United States  0.1
21 Aug 2021 01:15 Tuckahoe United States  0.1
21 Aug 2021 01:15 Reydon Shores United States  0.1
21 Aug 2021 01:15 Hampton Park United States  0.1
21 Aug 2021 01:15 Southampton United States  0.1
21 Aug 2021 01:15 Rose Grove United States  0.1
21 Aug 2021 01:15 Arshamonaque United States  0.1
21 Aug 2021 01:15 Greenport West United States  0.1
21 Aug 2021 01:15 Deerfield United States  0.1
21 Aug 2021 01:15 Greenport United States  0.1
21 Aug 2021 01:15 Cobb United States  0.1
21 Aug 2021 01:15 Flying Point United States  0.1
21 Aug 2021 01:15 Montclair Colony United States  0.1
21 Aug 2021 01:15 Watermill United States  0.1
21 Aug 2021 01:15 Shelter Island Heights United States  0.1
21 Aug 2021 01:15 East Marion United States  0.1
21 Aug 2021 01:15 Dering Harbor United States  0.1
21 Aug 2021 01:15 Noyack United States  0.1
21 Aug 2021 01:15 Hayground United States  0.1
21 Aug 2021 01:15 Shelter Island United States  0.1
21 Aug 2021 01:15 North Haven United States  0.1
21 Aug 2021 01:15 Bay Point United States  0.1
21 Aug 2021 01:15 Bridgehampton United States  0.1
21 Aug 2021 01:15 Mecox United States  0.1
21 Aug 2021 01:15 Sag Harbor United States  0.1
21 Aug 2021 01:15 Sagaponack United States  0.1
21 Aug 2021 01:15 Orient Point United States  0.1
21 Aug 2021 01:15 Northwest Landing United States  0.1
21 Aug 2021 01:15 Wainscott United States  0.1
21 Aug 2021 01:15 Alewife Brook Landing United States  0.1
21 Aug 2021 01:15 Hardscrabble United States  0.1
21 Aug 2021 01:15 Northwest Harbor United States  0.1
21 Aug 2021 01:15 Apaquogue United States  0.1
21 Aug 2021 01:15 Lafarges Landing United States  0.1
21 Aug 2021 01:15 East Hampton United States  0.1
21 Aug 2021 01:15 Threemile Harbor United States  0.1
21 Aug 2021 01:15 East Hampton North United States  0.1
21 Aug 2021 01:15 Maidstone Park United States  0.1
21 Aug 2021 01:15 Kingstown United States  0.1
21 Aug 2021 01:15 Springs United States  0.1
21 Aug 2021 01:15 Fireplace United States  0.1
21 Aug 2021 01:15 Amagansett United States  0.1
21 Aug 2021 01:15 Barnes Hole United States  0.1
21 Aug 2021 01:15 Abrams Landing United States  0.1