Overall Green alert Tropical Cyclone for HENRI-21
in United States
24 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 126 km/h
Maximum storm surge 0.7 m (22 Aug 14:30 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 126 km/h 0.7 m 810 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



Wind exposed population - AoIs

Estimations based on the bulletin of 24 Aug 2021 00:00 UTC
CategoryCountryPopulation 
Tropical StormUnited States12,918 

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 97 - - - - - - -
GREEN 22 21 Aug 2021 06:00 112 - - - - - - -
GREEN 23 21 Aug 2021 12:00 122 - - - - - - -
GREEN 24 21 Aug 2021 18:00 126 - - - - - - -
GREEN 25 22 Aug 2021 00:00 115 - - - - - - -
GREEN 26 22 Aug 2021 06:00 94 -
- - - - - United States
GREEN 27 22 Aug 2021 12:00 97 -
- - - - - United States
GREEN 28 22 Aug 2021 18:00 68 - - - - - - -
GREEN 29 23 Aug 2021 00:00 65 - - - - - - -
GREEN 30 23 Aug 2021 06:00 72 - - - - - - -
GREEN 31 23 Aug 2021 12:00 76 - - - - - - -
GREEN 32 23 Aug 2021 18:00 68 - - - - - - -
GREEN 33 24 Aug 2021 00:00 54 - - - - - - -
Download:





Impact estimation for the next 72h
TOP

Rainfall

810 mm

Up to 27.4 million can be affected by rain higher than 100mm (see SSHS)





Rain exposed population - AoIs

Estimations based on the bulletin of 24 Aug 2021 00:00 UTC
LevelCountryPopulation 
100-250 mmUnited States27,367,756 
50-100 mmUnited States, Canada12,351,856
+
United States12,299,926 
Canada51,929 

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 00:00 121 - - - - - - -
Blue 22 21 Aug 2021 06:00 117 - - - - - - -
Blue 23 21 Aug 2021 12:00 78 - - - - - - -
Blue 24 21 Aug 2021 18:00 40 - - - - - - -
Blue 25 22 Aug 2021 00:00 44 - - - - - - -
Blue 26 22 Aug 2021 06:00 110 -
- - - - - United States
Blue 27 22 Aug 2021 12:00 157 -
- - - - - United States
Blue 28 22 Aug 2021 18:00 45 - - - - - - -
Blue 29 23 Aug 2021 00:00 40 - - - - - - -
Blue 30 23 Aug 2021 06:00 38 - - - - - - -
Blue 31 23 Aug 2021 12:00 97 - - - - - - -
Blue 32 23 Aug 2021 18:00 42 - - - - - - -
Blue 33 24 Aug 2021 00:00 55 -
- - - - - United States




Impact estimation for the next 72h
TOP

StormSurge

The calculations have been performed using NAMIDANCE computer code, from Middle East Technical University.
reference: Zaytsev, Andrey; Kurkin, Andrey; Pelinovsky, Efim; Yalciner, Ahmet C. - NUMERICAL TSUNAMI MODEL NAMI-DANCE. - Science of Tsunami Hazards . Nov2019, Vol. 38 Issue 4, p151-168. 18p.
Doaj

0.7 m

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

Estimations based on the bulletin of 24 Aug 2021 00:00 UTC
LevelCountryPopulation 
0.5 - 1.0 mUnited States76,566 
0.25 - 0.5 mCanada, United States392,594
+
Canada19 
United States392,575 

Storm Surge Exposed locations

Calculation based on the bulletin of 24 Aug 2021 00:00 UTC