Overall Green Tropical Cyclone alert for HENRI-21 in United States from 16 Aug 2021 03:00 UTC to 23 Aug 2021 03:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Green alert Tropical Cyclone for HENRI-21

in United States

19 Aug 2021 00 UTC

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to select bulletin time

Meteorological source:

GDACS NOAA

Impact Single TC

GFS
HWRF
ECMWF

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	ECMWF
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	86 km/h
Maximum storm surge	0.2 m (19 Aug 00:15 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
ECMWF Current	86 km/h	0.2 m	210 mm	0.5
ECMWF Overall	58 km/h	0.6 m	351 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

58 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 19 Aug 2021 00:00 UTC

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

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
1	15 Aug 2021 12:00	40	-	-	-	-	-	-	-
2	16 Aug 2021 00:00	40	-	-	-	-	-	-	-
3	16 Aug 2021 12:00	-	90 thousand							United States
4	17 Aug 2021 00:00	-	130 thousand							United States, Canada
5	17 Aug 2021 12:00	68	-	-	-	-	-	-	-
6	18 Aug 2021 00:00	-	80 thousand							Canada, United States
7	18 Aug 2021 12:00	65	-	-	-	-	-	-	-
8	19 Aug 2021 00:00	119	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 19 Aug 2021 00:00 UTC

Level	Country	Population
100-250 mm	United States	25,009
50-100 mm	Canada, United States	3,546,635	+
	Canada	151,273
	United States	3,395,361

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Rainfall (mm)	Pop >100mm or higher	50-100	100-250	250-500	500-750	750-1000	>1000	Countries
1	15 Aug 2021 12:00	43	-	-	-	-	-	-	-
2	16 Aug 2021 00:00	72	-	-	-	-	-	-	-
3	16 Aug 2021 12:00	48	-	-	-	-	-	-	-
4	17 Aug 2021 00:00	94	-		-	-	-	-	-	United States
5	17 Aug 2021 12:00	178	-	-	-	-	-	-	-
6	18 Aug 2021 00:00	63	-	-	-	-	-	-	-
7	18 Aug 2021 12:00	141	-	-	-	-	-	-	-
8	19 Aug 2021 00:00	235	30 thousand			-	-	-	-	Canada, United States

Impact estimation for the next 72h

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StormSurge

0.2 m

The maximum Storm surge height is 0.2m in Shenandoah, United States. This height is estimated for 19 Aug 2021 00:15 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 19 Aug 2021 00:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	19 Aug 2021 00:15	Shenandoah	United States	0.2
	19 Aug 2021 00:15	Thorntown	United States	0.2
	19 Aug 2021 00:15	Delaware City	United States	0.2
	19 Aug 2021 00:15	Bay View Beach	United States	0.2
	19 Aug 2021 00:15	Fennimore Landing	United States	0.2
	19 Aug 2021 00:15	Taylors Bridge	United States	0.2
	19 Aug 2021 00:15	Shingle Landing	United States	0.2
	19 Aug 2021 00:15	Port Penn	United States	0.2
	19 Aug 2021 00:15	Flemings Landing	United States	0.2
	19 Aug 2021 00:15	Collins Beach	United States	0.2
	19 Aug 2021 00:15	Taylors Gut Landing	United States	0.2
	19 Aug 2021 00:15	Oakwood Beach	United States	0.2
	19 Aug 2021 00:15	Sinnickson Landing	United States	0.2
	19 Aug 2021 00:15	Woodland Beach	United States	0.2
	19 Aug 2021 00:15	Hagerville	United States	0.2
	19 Aug 2021 00:15	Salem	United States	0.2
	19 Aug 2021 00:15	Pine Island	United States	0.2
	19 Aug 2021 00:15	Bay Side	United States	0.2
	19 Aug 2021 00:00	Sea Breeze	United States	0.2
	19 Aug 2021 00:00	Loyds Corner	United States	0.2
	19 Aug 2021 00:00	Donas Landing	United States	0.2
	19 Aug 2021 00:00	Post Mahon	United States	0.2
	19 Aug 2021 00:00	Gandys Beach	United States	0.2
	19 Aug 2021 05:45	Elliott	United States	0.2
	19 Aug 2021 05:45	Bestpitch	United States	0.2
	19 Aug 2021 05:45	Nanticoke	United States	0.2
	19 Aug 2021 05:45	Waterview	United States	0.2
	19 Aug 2021 05:45	Dames Quarter	United States	0.2
	19 Aug 2021 05:45	Bivalve	United States	0.2
	19 Aug 2021 05:45	Twin River Trailer Park	United States	0.2
	19 Aug 2021 05:45	Tyaskin	United States	0.2
	19 Aug 2021 05:45	Wetipquin	United States	0.2
	19 Aug 2021 05:45	Coxs Corner	United States	0.2
	19 Aug 2021 05:45	Saint Stephen	United States	0.2
	19 Aug 2021 05:45	Gum Swamp	United States	0.2
	19 Aug 2021 05:45	Mount Vernon	United States	0.2
	19 Aug 2021 05:45	Clara	United States	0.2
	19 Aug 2021 05:45	Monie	United States	0.2
	19 Aug 2021 05:45	Whitehaven	United States	0.2
	19 Aug 2021 05:45	Venton	United States	0.2
	19 Aug 2021 00:00	Little Creek	United States	0.2
	19 Aug 2021 00:00	Postles Corner	United States	0.2
	19 Aug 2021 00:00	Generals Greene	United States	0.2
	19 Aug 2021 02:15	Fortescue	United States	0.2
	19 Aug 2021 06:15	Alma	Canada	0.2
	19 Aug 2021 06:15	Cape Enrage	Canada	0.2
	19 Aug 2021 06:15	Apple River	Canada	0.2
	19 Aug 2021 05:15	Pleasant Plains	United States	0.2
	19 Aug 2021 05:15	Rossville	United States	0.2
	19 Aug 2021 05:15	Fresh Kills	United States	0.2
	19 Aug 2021 05:15	Annadale	United States	0.2
	19 Aug 2021 05:15	Great Kills	United States	0.2
	19 Aug 2021 05:15	Staten Island	United States	0.2
	19 Aug 2021 05:15	Bayonne	United States	0.2
	19 Aug 2021 05:15	Oakwood Beach	United States	0.2
	19 Aug 2021 05:15	West New Brighton	United States	0.2
	19 Aug 2021 05:15	Richmond	United States	0.2
	19 Aug 2021 05:15	Emerson Hill	United States	0.2
	19 Aug 2021 05:15	Greenville	United States	0.2
	19 Aug 2021 05:15	Saint George	United States	0.2
	19 Aug 2021 05:15	Clifton	United States	0.2
	19 Aug 2021 05:15	Arrochar	United States	0.2
	19 Aug 2021 05:15	Jersey City	United States	0.2
	19 Aug 2021 05:15	Croxton	United States	0.2
	19 Aug 2021 05:15	Communipaw	United States	0.2
	19 Aug 2021 05:15	Fort Hamilton	United States	0.2
	19 Aug 2021 05:15	Hoboken	United States	0.2
	19 Aug 2021 05:15	Bay Ridge	United States	0.2
	19 Aug 2021 05:15	Red Hook	United States	0.2
	19 Aug 2021 05:15	New York	United States	0.2
	19 Aug 2021 05:15	Bath Beach	United States	0.2
	19 Aug 2021 05:15	Fort Hancock	United States	0.2
	19 Aug 2021 05:15	Coney Island	United States	0.2
	19 Aug 2021 05:15	Park Slope	United States	0.2
	19 Aug 2021 05:15	Manhattan	United States	0.2
	19 Aug 2021 05:15	Gravesend	United States	0.2
	19 Aug 2021 05:15	Adelphi	United States	0.2
	19 Aug 2021 05:15	Brighton Beach	United States	0.2
	19 Aug 2021 05:15	Greenpoint	United States	0.2
	19 Aug 2021 05:15	Sunnyside	United States	0.2
	19 Aug 2021 05:15	Flatlands	United States	0.2
	19 Aug 2021 05:15	Astoria	United States	0.2
	19 Aug 2021 05:15	Breezy Point	United States	0.2
	19 Aug 2021 05:15	Gerritsen	United States	0.2
	19 Aug 2021 05:15	Haberman	United States	0.2
	19 Aug 2021 05:15	Bergen Beach	United States	0.2
	19 Aug 2021 05:15	Woodside	United States	0.2
	19 Aug 2021 05:15	Steinway	United States	0.2
	19 Aug 2021 06:00	Advocate Harbour	Canada	0.1
	19 Aug 2021 06:00	Spencer Island	Canada	0.1
	19 Aug 2021 02:00	Warren Landing	United States	0.1
	19 Aug 2021 02:00	Kitts Hummock	United States	0.1
	19 Aug 2021 02:00	Bowers	United States	0.1
	19 Aug 2021 08:30	Gabarus	Canada	0.1
	19 Aug 2021 07:00	Hall Harbour	Canada	0.1
	19 Aug 2021 07:00	Port Greville	Canada	0.1
	19 Aug 2021 07:00	Scots Bay	Canada	0.1
	19 Aug 2021 07:00	Parrsboro	Canada	0.1
	19 Aug 2021 01:30	Bivalve	United States	0.1
	19 Aug 2021 01:15	Frenchs Mobile Homes	United States	0.1
	19 Aug 2021 00:45	Canning	Canada	0.1
	19 Aug 2021 00:45	Kingsport	Canada	0.1
	19 Aug 2021 04:30	Half Island Cove	Canada	0.1
	19 Aug 2021 04:15	Port Hawkesbury	Canada	0.1
	19 Aug 2021 04:15	Point Tupper	Canada	0.1
	19 Aug 2021 04:15	Evanston	Canada	0.1
	19 Aug 2021 02:45	Port Norris	United States	0.1
	19 Aug 2021 02:45	Heislerville	United States	0.1
	19 Aug 2021 02:45	Delmont	United States	0.1
	19 Aug 2021 02:45	Miami Beach	United States	0.1
	19 Aug 2021 02:45	Villas	United States	0.1
	19 Aug 2021 02:45	Eldora	United States	0.1
	19 Aug 2021 02:45	Pierces Point	United States	0.1
	19 Aug 2021 02:45	Green Creek	United States	0.1
	19 Aug 2021 02:45	Erma	United States	0.1
	19 Aug 2021 02:45	Reeds Beach	United States	0.1
	19 Aug 2021 02:45	Dias Creek	United States	0.1
	19 Aug 2021 02:45	Rio Grande	United States	0.1
	19 Aug 2021 02:45	Whitesboro	United States	0.1
	19 Aug 2021 02:45	Goshen	United States	0.1
	19 Aug 2021 02:45	Burleigh	United States	0.1
	19 Aug 2021 02:45	Cape May Court House	United States	0.1
	19 Aug 2021 02:45	Grassy Sound	United States	0.1
	19 Aug 2021 02:45	Wildwood	United States	0.1
	19 Aug 2021 02:45	North Wildwood	United States	0.1
	19 Aug 2021 02:45	Scotch Bonnet	United States	0.1
	19 Aug 2021 02:45	Swainton	United States	0.1
	19 Aug 2021 08:00	Perry	United States	0.1
	19 Aug 2021 08:00	Saint Andrews	Canada	0.1
	19 Aug 2021 08:00	Pleasant Point	United States	0.1
	19 Aug 2021 08:00	Richardson	Canada	0.1
	19 Aug 2021 08:00	L'Etete	Canada	0.1
	19 Aug 2021 08:00	Saint George	Canada	0.1
	19 Aug 2021 07:45	Larry's River	Canada	0.1
	19 Aug 2021 07:45	Whitehead	Canada	0.1
	19 Aug 2021 07:00	Port Williams	Canada	0.1
	19 Aug 2021 08:15	Robbinston	United States	0.1
	19 Aug 2021 08:15	Quoddy	United States	0.1
	19 Aug 2021 08:15	Eastport	United States	0.1
	19 Aug 2021 08:15	Welshpool	Canada	0.1
	19 Aug 2021 04:15	Arichat	Canada	0.1
	19 Aug 2021 04:15	Canso	Canada	0.1
	19 Aug 2021 04:15	D'Escousse	Canada	0.1
	19 Aug 2021 07:30	Petit-de-Grat	Canada	0.1
	19 Aug 2021 08:15	Fourchu	Canada	0.1
	19 Aug 2021 08:15	Saint Peters	Canada	0.1
	19 Aug 2021 08:15	L'Ardoise	Canada	0.1
	19 Aug 2021 08:15	Soldiers Cove	Canada	0.1
	19 Aug 2021 06:00	Morden	Canada	0.1
	19 Aug 2021 11:15	Wenona	United States	0.1
	19 Aug 2021 11:15	Deal Island	United States	0.1
	19 Aug 2021 11:15	Chance	United States	0.1
	19 Aug 2021 11:15	Rumbley	United States	0.1
	19 Aug 2021 11:15	Oriole	United States	0.1
	19 Aug 2021 11:15	Fairmount	United States	0.1
	19 Aug 2021 11:15	Champ	United States	0.1
	19 Aug 2021 11:15	Upper Fairmount	United States	0.1

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.