Overall Green alert Tropical Cyclone for HENRI-21
in United States
18 Aug 2021 12 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
Exposed population No people in Category 1 or higher
Maximum wind speed 119 km/h
Maximum storm surge 0.2 m (18 Aug 16:45 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 119 km/h 0.2 m 134 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)

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Wind



Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 18 Aug 2021 12:00 UTC

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 12:00 155 - - - - - - -
Download:





Impact estimation for the next 72h
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Rainfall

810 mm

No people can be affected by rain higher than 100mm (see SSHS)





Rain exposed population - AoIs

Estimations based on the bulletin of 18 Aug 2021 12:00 UTC
LevelCountryPopulation 
50-100 mmUnited States, Canada238,782
+
United States235,786 
Canada2,996 

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 12:00 316 -
- - - - - United States, Canada




Impact estimation for the next 72h
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StormSurge

0.2 m

The maximum Storm surge height is  0.2m in Port Greville, Canada. This height is estimated for 18 Aug 2021 16:45 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 18 Aug 2021 12:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
18 Aug 2021 16:45 Port Greville Canada  0.2
18 Aug 2021 16:45 Canning Canada  0.2
18 Aug 2021 16:45 Scots Bay Canada  0.2
18 Aug 2021 16:45 Kingsport Canada  0.2
18 Aug 2021 16:45 Parrsboro Canada  0.2
18 Aug 2021 17:15 Hall Harbour Canada  0.1
18 Aug 2021 17:15 Port Williams Canada  0.1
18 Aug 2021 16:45 Larry's River Canada  0.1
18 Aug 2021 16:45 Half Island Cove Canada  0.1
18 Aug 2021 16:45 Whitehead Canada  0.1
18 Aug 2021 17:45 Morden Canada  0.1
18 Aug 2021 17:15 Spencer Island Canada  0.1
18 Aug 2021 17:15 Apple River Canada  0.1
18 Aug 2021 17:15 Advocate Harbour Canada  0.1
18 Aug 2021 16:30 Evanston Canada  0.1
18 Aug 2021 16:30 Arichat Canada  0.1
18 Aug 2021 16:30 Canso Canada  0.1
18 Aug 2021 16:30 D'Escousse Canada  0.1
18 Aug 2021 16:30 Petit-de-Grat Canada  0.1
18 Aug 2021 16:45 Port Hawkesbury Canada  0.1
18 Aug 2021 16:45 Point Tupper Canada  0.1
18 Aug 2021 18:00 Elliott United States  0.1
18 Aug 2021 18:00 Bestpitch United States  0.1
18 Aug 2021 18:00 Nanticoke United States  0.1
18 Aug 2021 18:00 Waterview United States  0.1
18 Aug 2021 18:00 Dames Quarter United States  0.1
18 Aug 2021 18:00 Bivalve United States  0.1
18 Aug 2021 18:00 Twin River Trailer Park United States  0.1
18 Aug 2021 18:00 Tyaskin United States  0.1
18 Aug 2021 18:00 Wetipquin United States  0.1
18 Aug 2021 18:00 Coxs Corner United States  0.1
18 Aug 2021 18:00 Saint Stephen United States  0.1
18 Aug 2021 18:00 Gum Swamp United States  0.1
18 Aug 2021 18:00 Mount Vernon United States  0.1
18 Aug 2021 18:00 Clara United States  0.1
18 Aug 2021 18:00 Monie United States  0.1
18 Aug 2021 18:00 Whitehaven United States  0.1
18 Aug 2021 18:00 Venton United States  0.1
18 Aug 2021 17:45 Alma Canada  0.1
18 Aug 2021 18:00 Cape Enrage Canada  0.1