Overall Orange Tropical Cyclone alert for HARVEY-17 in United States from 17 Aug 2017 15:00 UTC to 20 Aug 2017 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 Orange alert Tropical Cyclone for HARVEY-17

in United States

20 Aug 2017 03 UTC

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Meteorological source:

GDACS NOAA

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone HARVEY-17 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GDACS
Glide number:	TC-2017-000123-USA
Exposed countries	United States
Exposed population	500 thousand in Category 1 or higher
Maximum wind speed	213 km/h
Maximum storm surge	1.6 m (26 Aug 05:00 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
Current	56 km/h	1.6 m	n.a.	0.5
Overall	213 km/h	1.6 m	n.a.	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on GDACS impact

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Wind

56 km/h Current Max.

Up to 580000 people in Tropical Storm strength or higher (see SSHS)

Impact Timeline

N°	Date (UTC)	Max Winds (km/h)	Population in Tropical Storm or higher	Population in Cat 1. or higher	Countries
1	17 Aug 2017 15:00	120	2.7 million	No people	Barbados, Saint Lucia, Saint Vincent and the Grenadines, Honduras, Nicaragua, Mexico, Belize, Guatemala
2	17 Aug 2017 21:00	111	4 million	No people	Barbados, Saint Lucia, Saint Vincent and the Grenadines, Nicaragua, Honduras, Mexico, Belize, Guatemala
3	18 Aug 2017 03:00	111	2.8 million	No people	Barbados, Saint Lucia, Saint Vincent and the Grenadines, Nicaragua, Honduras, Mexico, Belize, Guatemala
4	18 Aug 2017 09:00	111	2.3 million	No people	Barbados, Saint Lucia, Saint Vincent and the Grenadines, Honduras, Nicaragua, Mexico, Belize, Guatemala
5	18 Aug 2017 15:00	111	4.3 million	No people	Saint Vincent and the Grenadines, Saint Lucia, Grenada, Barbados, Honduras, Nicaragua, Mexico, Belize, Guatemala
6	18 Aug 2017 21:00	111	2.6 million	No people	Saint Vincent and the Grenadines, Grenada, Saint Lucia, Barbados, Nicaragua, Honduras, Mexico, Belize, Guatemala
7	19 Aug 2017 03:00	102	3.5 million	No people	Grenada, Saint Vincent and the Grenadines, Saint Lucia, Barbados, Nicaragua, Honduras, Mexico, Belize, Guatemala
8	19 Aug 2017 09:00	102	3.2 million	No people	Grenada, Saint Vincent and the Grenadines, Saint Lucia, Barbados, Nicaragua, Honduras, Mexico, Belize, Guatemala
9	19 Aug 2017 15:00	111	2.6 million	No people	Grenada, Saint Vincent and the Grenadines, Saint Lucia, Barbados, Honduras, Nicaragua, Mexico, Belize, Guatemala
10	19 Aug 2017 21:00	83	2.7 million	No people	Grenada, Saint Vincent and the Grenadines, Saint Lucia, Barbados, Honduras, Nicaragua, Mexico, Belize, Guatemala
11	20 Aug 2017 03:00	56	580 thousand	No people	Grenada, Saint Vincent and the Grenadines, Saint Lucia, Barbados

Bulletin Timeline

N°	Date (UTC)	Category (SSHS)	Max winds (km/h)	Population in Cat.1 or higher	Population in Tropical Storm or higher	Location (lat, lon)	Countries
1	17 Aug 2017 15:00	Tropical depression	56	no people	no people	13.1, -54.1
2	17 Aug 2017 21:00	Tropical storm	65	no people	no people	13, -55.8
3	18 Aug 2017 03:00	Tropical storm	65	no people	290000 people	13, -57.4	Barbados
4	18 Aug 2017 09:00	Tropical storm	65	no people	500000 people	13.1, -59.1	Saint Vincent and the Grenadines
5	18 Aug 2017 15:00	Tropical storm	65	no people	290000 people	13.1, -61.3	Saint Vincent and the Grenadines
6	18 Aug 2017 21:00	Tropical storm	65	no people	no people	13.4, -62.9
7	19 Aug 2017 03:00	Tropical storm	65	no people	no people	13.7, -64.1
8	19 Aug 2017 09:00	Tropical storm	65	no people	no people	13.8, -65.9
9	19 Aug 2017 15:00	Tropical storm	65	no people	no people	13.9, -68.1
10	19 Aug 2017 21:00	Tropical depression	56	no people	no people	14.1, -70
11	20 Aug 2017 03:00	Tropical depression	56	no people	no people	14.3, -71.8

Actual track of the current bulletin

The alert for forecast greater than 3 days is limited to Orange level.

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Exposed population - AoIs

Exposed population in the potential affected countries, provinces and populated places

Countries

Country
Grenada
St. Vincent & the Grenadines
St. Lucia
Barbados

Provinces

Region Province	Country
Grenada	Grenada
St. Vincent & the Grenadines	Saint Vincent and the Grenadines
St. Lucia	Saint Lucia
Barbados	Barbados

Populated places

Name	Region Province	Country	City class	Population
Kingstown	Saint George	St. Vincent and the Grenadines	Capital	18000 people
Castries	Castries	St. Lucia	Capital	13000 people
Bridgetown	Saint Michael	Barbados	Capital	97000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name	IATA Code	Elevation (m)	Usage	Runway type	IFR	Runway Length (ft)
Carriacou	CRU	unknown				0
Union Island	UNI	unknown				0
Palm Island	PLI	unknown				0
Canouan		5	Civ.	Paved	No	3600
J F Mitchell		4	Civ.	Paved	No	3600
E T Joshua	SVD	20	Civ.	Paved	Yes	4600
Vigie	SLU	6	Civ.	Paved	Yes	6200
Hewanorra International	UVF	3	Civ.	Paved	Yes	9000
Grantley Adams International	BGI	52	Civ.	Paved	Yes	11000

Ports

Name	LOCODE	Country
Kingstown	VCKTN	Saint Vincent and the Grenadines
Admiralty Bay		Saint Vincent and the Grenadines
Cul de Sac Bay	LCCDS	Saint Lucia
Castries	LCSLU	Saint Lucia
Vieux Fort		Saint Lucia
Speightstown		Barbados
Bridgetown	BBBGI	Barbados

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Rainfall

Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

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StormSurge

1.6 m

The maximum Storm surge height is 1.6m in Estes, United States. This height is estimated for 26 Aug 2017 05:00 UTC .

The JRC has developed an experimental global storm surge model. 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.

Locations affected by Storm surge (91 locations). Calculation based on advisory number 24 of 26 Aug 2017 09:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	26 Aug 2017 05:00	Estes	United States	1.6
	26 Aug 2017 05:00	Rockport	United States	1.6
	26 Aug 2017 05:00	Shell Ridge	United States	1.6
	26 Aug 2017 05:00	Copano Village	United States	1.6
	26 Aug 2017 05:00	Fulton	United States	1.6
	26 Aug 2017 05:00	Spanish Village	United States	1.6
	26 Aug 2017 04:00	Kenney Lane West Colonia	United States	1.4
	26 Aug 2017 04:00	Port Ingleside	United States	1.4
	26 Aug 2017 04:00	Indian Trails Lane Colonia	United States	1.4
	26 Aug 2017 04:00	Country Acres Colonia	United States	1.4
	26 Aug 2017 04:00	Country Estates Colonia	United States	1.4
	26 Aug 2017 04:00	Aransas Pass	United States	1.4
	26 Aug 2017 03:00	Mustang Beach	United States	1.4
	26 Aug 2017 03:00	Port Aransas	United States	1.4
	26 Aug 2017 05:00	Port O'Connor	United States	1.4
	26 Aug 2017 02:00	Palacios	United States	1.3
	26 Aug 2017 07:00	Matagorda	United States	1.0
	26 Aug 2017 00:00	Chinquapin	United States	0.7
	26 Aug 2017 16:00	Flake	United States	0.6
	26 Aug 2017 16:00	Elmgrove	United States	0.6
	26 Aug 2017 16:00	Crystal Beach	United States	0.6
	26 Aug 2017 16:00	Bolivar Peninsula	United States	0.6
	26 Aug 2017 16:00	Nadeau	United States	0.6
	26 Aug 2017 16:00	Texas City Junction	United States	0.6
	26 Aug 2017 16:00	Bayou Vista	United States	0.6
	26 Aug 2017 16:00	Texas City	United States	0.6
	26 Aug 2017 16:00	Virginia Point	United States	0.6
	26 Aug 2017 16:00	Port Bolivar	United States	0.6
	26 Aug 2017 16:00	Fort Travis	United States	0.6
	26 Aug 2017 15:00	Anderson Ways	United States	0.5
	25 Aug 2017 17:00	South Padre Island	United States	0.5
	26 Aug 2017 07:00	Gulf Park	United States	0.5
	26 Aug 2017 23:00	Intracoastal City	United States	0.5
	26 Aug 2017 07:00	Valasco Heights	United States	0.5
	26 Aug 2017 07:00	Freeport	United States	0.5
	26 Aug 2017 22:00	Patton	United States	0.5
	25 Aug 2017 17:00	Hoskins	United States	0.5
	26 Aug 2017 00:00	Bryan Beach	United States	0.5
	25 Aug 2017 17:00	Mims	United States	0.5
	25 Aug 2017 17:00	Hoskins	United States	0.5
	25 Aug 2017 17:00	Port Morris	United States	0.5
	26 Aug 2017 14:00	High Island	United States	0.5
	27 Aug 2017 00:00	Cheniere Au Tigre	United States	0.4
	26 Aug 2017 14:00	Caplen	United States	0.4
	26 Aug 2017 14:00	Gilchrist	United States	0.4
	26 Aug 2017 00:00	Flour Bluff	United States	0.4
	25 Aug 2017 19:00	Red Fish Cove	United States	0.4
	27 Aug 2017 03:00	Grand Chenier	United States	0.4
	25 Aug 2017 19:00	Quintana	United States	0.4
	25 Aug 2017 19:00	Surfside	United States	0.4
	25 Aug 2017 19:00	Surfside Beach	United States	0.4
	25 Aug 2017 20:00	Jamaica Beach	United States	0.4
	25 Aug 2017 19:00	Bay Harbor	United States	0.4
	26 Aug 2017 16:00	Sea Isle	United States	0.4
	26 Aug 2017 22:00	Johnson's Bayou	United States	0.4
	26 Aug 2017 22:00	Constance Beach	United States	0.4
	26 Aug 2017 22:00	Peveto Beach	United States	0.4
	26 Aug 2017 22:00	Holly Beach	United States	0.4
	26 Aug 2017 22:00	Cameron	United States	0.4
	25 Aug 2017 19:00	Galveston	United States	0.4
	26 Aug 2017 22:00	Oak Grove	United States	0.4
	26 Aug 2017 22:00	Gordy	United States	0.4
	26 Aug 2017 22:00	South Bend	United States	0.4
	26 Aug 2017 22:00	Ellerstie	United States	0.4
	25 Aug 2017 17:00	Yarborough	United States	0.3
	24 Aug 2017 15:00	Balantanche	Mexico	0.3
	25 Aug 2017 14:00	Holly Beach	United States	0.3
	25 Aug 2017 14:00	Laguna Vista	United States	0.3
	25 Aug 2017 14:00	Laguna Heights	United States	0.3
	25 Aug 2017 14:00	Port Isabel	United States	0.3
	25 Aug 2017 22:00	Boca Chica	United States	0.2
	25 Aug 2017 22:00	Kopernik Shores	United States	0.2
	24 Aug 2017 15:00	Haltunchen	Mexico	0.2
	24 Aug 2017 15:00	Seybaplaya	Mexico	0.2
	24 Aug 2017 15:00	Champoton	Mexico	0.2
	24 Aug 2017 16:00	Celestum	Mexico	0.2
	25 Aug 2017 21:00	Fraccionamiento Nuevo Leon	Mexico	0.2
	24 Aug 2017 15:00	Hoquel	Mexico	0.2
	24 Aug 2017 17:00	Sisal	Mexico	0.2
	24 Aug 2017 16:00	Porfirio Diaz	Mexico	0.1
	24 Aug 2017 16:00	Chenkan	Mexico	0.1
	24 Aug 2017 15:00	Santa Cruz	Mexico	0.1
	24 Aug 2017 15:00	Sabancuy	Mexico	0.1
	24 Aug 2017 15:00	Noham	Mexico	0.1
	26 Aug 2017 02:00	El Mezquital	Mexico	0.1
	24 Aug 2017 20:00	Mina de Oro	Mexico	0.1
	24 Aug 2017 19:00	Chelem	Mexico	0.1
	24 Aug 2017 19:00	Progreso	Mexico	0.1
	24 Aug 2017 19:00	Pixoy	Mexico	0.1
	24 Aug 2017 19:00	Telchac Puerto	Mexico	0.1
	24 Aug 2017 19:00	Chabihau	Mexico	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.