Overall Green alert Tropical Cyclone for HENRI-21
in United States
17 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
Exposed population No people in Category 1 or higher
Maximum wind speed 104 km/h
Maximum storm surge 0.1 m (17 Aug 22:30 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 104 km/h 0.1 m 48 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

No people by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 17 Aug 2021 18:00 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 18:00 108 - - - - - - -
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 17 Aug 2021 18:00 UTC
LevelCountryPopulation 
50-100 mmUnited States527,233 

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 18:00 239 -
- - - - - United States




Impact estimation for the next 72h
TOP

StormSurge

0.1 m

The maximum Storm surge height is  0.1m in Gabarus, Canada. This height is estimated for 17 Aug 2021 22:30 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 17 Aug 2021 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
17 Aug 2021 22:30 Gabarus Canada  0.1
17 Aug 2021 21:30 Shenandoah United States  0.1
17 Aug 2021 21:30 Thorntown United States  0.1
17 Aug 2021 21:30 Delaware City United States  0.1
17 Aug 2021 21:30 Bay View Beach United States  0.1
17 Aug 2021 21:30 Fennimore Landing United States  0.1
17 Aug 2021 21:30 Taylors Bridge United States  0.1
17 Aug 2021 21:30 Shingle Landing United States  0.1
17 Aug 2021 21:30 Port Penn United States  0.1
17 Aug 2021 21:30 Flemings Landing United States  0.1
17 Aug 2021 21:30 Collins Beach United States  0.1
17 Aug 2021 21:30 Taylors Gut Landing United States  0.1
17 Aug 2021 21:30 Oakwood Beach United States  0.1
17 Aug 2021 21:30 Sinnickson Landing United States  0.1
17 Aug 2021 21:30 Woodland Beach United States  0.1
17 Aug 2021 21:30 Hagerville United States  0.1
17 Aug 2021 21:30 Salem United States  0.1
17 Aug 2021 21:30 Pine Island United States  0.1
17 Aug 2021 21:30 Bay Side United States  0.1
17 Aug 2021 23:30 Half Island Cove Canada  0.1
17 Aug 2021 23:30 Whitehead Canada  0.1
17 Aug 2021 23:30 Arichat Canada  0.1
17 Aug 2021 23:30 Canso Canada  0.1
17 Aug 2021 21:45 Sea Breeze United States  0.1
17 Aug 2021 21:45 Loyds Corner United States  0.1
17 Aug 2021 23:00 Fourchu Canada  0.1
17 Aug 2021 23:30 Port Hawkesbury Canada  0.1
17 Aug 2021 23:30 Point Tupper Canada  0.1
17 Aug 2021 23:30 Evanston Canada  0.1
17 Aug 2021 23:45 Larry's River Canada  0.1
17 Aug 2021 23:30 D'Escousse Canada  0.1
17 Aug 2021 23:30 Petit-de-Grat Canada  0.1
17 Aug 2021 23:15 Donas Landing United States  0.1
17 Aug 2021 23:15 Post Mahon United States  0.1