Overall Green Tropical Cyclone alert for LANE-18 in United States from 15 Aug 2018 03:00 UTC to 29 Aug 2018 00:00 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 LANE-18

in United States

click on

to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

GFS
HWRF
ECMWF

Impact based on all weather systems in the area

Impact

Tropical Cyclone LANE-18 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	0 km/h
Maximum storm surge	0.4 m (25 Aug 21:15 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	0 km/h	0.4 m	n.a.	0.5
ECMWF Overall	0 km/h	0.4 m	n.a.	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

-4 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 24 Aug 2018 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
1	14 Aug 2018 12:00	-	-	-	-	-	-	-	-
1	17 Aug 2018 00:00	-	-	-	-	-	-	-	-
2	15 Aug 2018 00:00	-	-	-	-	-	-	-	-
2	17 Aug 2018 12:00	-	-	-	-	-	-	-	-
3	15 Aug 2018 12:00	-	-	-	-	-	-	-	-
3	18 Aug 2018 00:00	-	-	-	-	-	-	-	-
4	16 Aug 2018 00:00	-	-	-	-	-	-	-	-
4	18 Aug 2018 12:00	-	-	-	-	-	-	-	-
5	16 Aug 2018 12:00	-	-	-	-	-	-	-	-
5	19 Aug 2018 00:00	-	-	-	-	-	-	-	-
6	19 Aug 2018 12:00	-	-	-	-	-	-	-	-
7	20 Aug 2018 00:00	-	-	-	-	-	-	-	-
8	20 Aug 2018 12:00	-	-	-	-	-	-	-	-
9	21 Aug 2018 00:00	-	-	-	-	-	-	-	-
10	21 Aug 2018 12:00	-	-	-	-	-	-	-	-
11	22 Aug 2018 00:00	-	-	-	-	-	-	-	-
12	22 Aug 2018 12:00	-	-	-	-	-	-	-	-
13	23 Aug 2018 00:00	-	-	-	-	-	-	-	-
14	23 Aug 2018 12:00	64	-	-	-	-	-	-	-
20	24 Aug 2018 00:00	0	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

No exposed population (greater than 50mm) based on the bulletin of 24 Aug 2018 00:00 UTC

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
1	14 Aug 2018 12:00	-	-	-	-	-	-	-	-
1	17 Aug 2018 00:00	-	-	-	-	-	-	-	-
2	15 Aug 2018 00:00	-	-	-	-	-	-	-	-
2	17 Aug 2018 12:00	-	-	-	-	-	-	-	-
3	15 Aug 2018 12:00	-	-	-	-	-	-	-	-
3	18 Aug 2018 00:00	-	-	-	-	-	-	-	-
4	16 Aug 2018 00:00	-	-	-	-	-	-	-	-
4	18 Aug 2018 12:00	-	-	-	-	-	-	-	-
5	16 Aug 2018 12:00	-	-	-	-	-	-	-	-
5	19 Aug 2018 00:00	-	-	-	-	-	-	-	-
6	19 Aug 2018 12:00	-	-	-	-	-	-	-	-
7	20 Aug 2018 00:00	-	-	-	-	-	-	-	-
8	20 Aug 2018 12:00	-	-	-	-	-	-	-	-
9	21 Aug 2018 00:00	-	-	-	-	-	-	-	-
10	21 Aug 2018 12:00	-	-	-	-	-	-	-	-
11	22 Aug 2018 00:00	-	-	-	-	-	-	-	-
12	22 Aug 2018 12:00	-	-	-	-	-	-	-	-
13	23 Aug 2018 00:00	-	-	-	-	-	-	-	-
14	23 Aug 2018 12:00	-	-	-	-	-	-	-	-
20	24 Aug 2018 00:00	-	-	-	-	-	-	-	-

Impact estimation for the next 72h

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StormSurge

0.4 m

The maximum Storm surge height is 0.4m in Puerto Venustiano Carranza, Mexico. This height is estimated for 25 Aug 2018 21:15 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 24 Aug 2018 00:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	25 Aug 2018 21:15	Puerto Venustiano Carranza	Mexico	0.4
	25 Aug 2018 02:45	Bahia de Tortugas	Mexico	0.3
	26 Aug 2018 02:45	Desembarcadero de Miller	Mexico	0.3
	25 Aug 2018 03:00	Cedros	Mexico	0.3
	24 Aug 2018 18:45	Kaluaaha	United States	0.3
	24 Aug 2018 18:45	Keomuku	United States	0.3
	24 Aug 2018 18:45	Ualapue	United States	0.3
	24 Aug 2018 18:45	Pukoo	United States	0.3
	24 Aug 2018 18:45	Waialua	United States	0.3
	24 Aug 2018 18:45	Kaanapali	United States	0.3
	24 Aug 2018 18:45	Puukolii	United States	0.3
	24 Aug 2018 18:45	Lahaina	United States	0.3
	24 Aug 2018 18:45	Crater Village	United States	0.3
	24 Aug 2018 18:45	Honokahua	United States	0.3
	24 Aug 2018 18:45	Mahinahina Camp	United States	0.3
	24 Aug 2018 18:45	Kapalua	United States	0.3
	24 Aug 2018 18:45	Olowalu	United States	0.3
	24 Aug 2018 18:45	Kahakuloa	United States	0.3
	26 Aug 2018 20:45	Umipaa	United States	0.3
	26 Aug 2018 20:45	Kaunakakai	United States	0.3
	26 Aug 2018 20:45	Kaumalapau	United States	0.3
	26 Aug 2018 20:45	Moku	United States	0.3
	26 Aug 2018 20:45	Kamalo	United States	0.3
	24 Aug 2018 17:15	Halawa	United States	0.3
	25 Aug 2018 20:00	Rancho San Francisco	Mexico	0.2
	25 Aug 2018 20:00	Colonia Camalu	Mexico	0.2
	25 Aug 2018 20:00	Santa Catarina	Mexico	0.2
	25 Aug 2018 20:15	Rancho Palos Verdes	United States	0.2
	25 Aug 2018 20:15	Rolling Hills Estates	United States	0.2
	25 Aug 2018 20:15	Rolling Hills	United States	0.2
	25 Aug 2018 20:15	San Pedro	United States	0.2
	25 Aug 2018 20:15	Wilmington	United States	0.2
	25 Aug 2018 20:15	Signal Hill	United States	0.2
	25 Aug 2018 20:15	Belmont Shore	United States	0.2
	25 Aug 2018 20:15	Surfside	United States	0.2
	25 Aug 2018 20:15	Seal Beach	United States	0.2
	25 Aug 2018 20:15	Sunset Beach	United States	0.2
	25 Aug 2018 19:30	Erendria	Mexico	0.2
	25 Aug 2018 21:45	Waimea	United States	0.2
	25 Aug 2018 21:45	Sunset Beach	United States	0.2
	25 Aug 2018 21:45	Pupukea	United States	0.2
	25 Aug 2018 21:45	Waialee	United States	0.2
	25 Aug 2018 21:45	Kawela Bay	United States	0.2
	25 Aug 2018 21:45	Marconi	United States	0.2
	25 Aug 2018 21:45	Kahuku	United States	0.2
	25 Aug 2018 21:45	Laie	United States	0.2
	25 Aug 2018 21:45	Hauula	United States	0.2
	25 Aug 2018 21:45	Punaluu	United States	0.2
	25 Aug 2018 21:45	Kaaawa	United States	0.2
	25 Aug 2018 21:45	Kahana	United States	0.2
	25 Aug 2018 20:00	Azure Vista	United States	0.2
	25 Aug 2018 20:00	Fort Rosecrans	United States	0.2
	25 Aug 2018 20:00	Roseville	United States	0.2
	25 Aug 2018 20:00	San Diego	United States	0.2
	25 Aug 2018 20:00	Coronado	United States	0.2
	25 Aug 2018 20:00	Imperial Beach	United States	0.2
	25 Aug 2018 20:15	Ocean Beach	United States	0.2
	25 Aug 2018 20:15	Mission Beach	United States	0.2
	25 Aug 2018 20:15	Campland on the Bay Trailer Park	United States	0.2
	25 Aug 2018 20:15	Loma Portal	United States	0.2
	26 Aug 2018 20:45	Maalaea	United States	0.2
	26 Aug 2018 20:45	Waihee	United States	0.2
	26 Aug 2018 20:45	Hyashi Village	United States	0.2
	26 Aug 2018 20:45	Wailuku	United States	0.2
	26 Aug 2018 20:45	Kahului	United States	0.2
	26 Aug 2018 20:45	Puunene	United States	0.2
	26 Aug 2018 20:45	Village Eight	United States	0.2
	26 Aug 2018 20:45	Hawaiian Village	United States	0.2
	26 Aug 2018 20:45	Paia	United States	0.2
	26 Aug 2018 20:45	Haiku	United States	0.2
	26 Aug 2018 20:45	Pauwela	United States	0.2
	26 Aug 2018 20:45	Ulumalu	United States	0.2
	26 Aug 2018 03:45	Isla Natividad	Mexico	0.2
	24 Aug 2018 16:00	Kualapuu	United States	0.2
	26 Aug 2018 04:30	Huntington Beach	United States	0.2
	26 Aug 2018 04:30	Newport Beach	United States	0.2
	26 Aug 2018 04:30	Cliff Haven	United States	0.2
	26 Aug 2018 04:30	Bay Shores	United States	0.2
	26 Aug 2018 04:30	Leucadia	United States	0.2
	26 Aug 2018 04:30	Encinitas	United States	0.2
	26 Aug 2018 04:30	Cardiff-by-the-Sea	United States	0.2
	26 Aug 2018 04:30	La Jolla	United States	0.2
	26 Aug 2018 04:30	The Muirlands	United States	0.2
	26 Aug 2018 04:30	Solana Beach	United States	0.2
	26 Aug 2018 04:30	Green Valley Mobile Estates	United States	0.2
	26 Aug 2018 04:30	Del Mar	United States	0.2
	26 Aug 2018 04:30	Easter Cross	United States	0.2
	26 Aug 2018 04:30	Sorrento	United States	0.2
	26 Aug 2018 04:45	Rancho Boca de San Jose	Mexico	0.2
	26 Aug 2018 04:30	Balboa	United States	0.2
	26 Aug 2018 04:30	Corona del Mar	United States	0.2
	26 Aug 2018 04:30	Crystal Cove	United States	0.2
	26 Aug 2018 04:30	San Joaquin Hills	United States	0.2
	26 Aug 2018 04:45	Palos Verdes Estates	United States	0.2
	26 Aug 2018 04:45	Clifton	United States	0.2
	26 Aug 2018 04:45	Two Harbors	United States	0.2
	26 Aug 2018 04:45	Avalon	United States	0.2
	25 Aug 2018 20:00	Rosarito	Mexico	0.2
	26 Aug 2018 04:30	Ponto	United States	0.2
	24 Aug 2018 21:30	El Rosario	Mexico	0.2
	26 Aug 2018 04:15	El Sauzal	Mexico	0.2
	26 Aug 2018 04:15	Cabo Punta Banda	Mexico	0.2
	26 Aug 2018 04:15	Ensenada	Mexico	0.2
	24 Aug 2018 18:45	Boal	United States	0.2
	25 Aug 2018 20:30	Stuart	United States	0.2
	25 Aug 2018 20:30	Fallbrook Junction	United States	0.2
	25 Aug 2018 20:30	Camp Pendleton South	United States	0.2
	25 Aug 2018 20:30	Escondido Junction	United States	0.2
	25 Aug 2018 20:30	Oceanside	United States	0.2
	25 Aug 2018 20:30	Carlsbad	United States	0.2
	24 Aug 2018 20:45	Playa Oceano Pacifico	Mexico	0.2
	25 Aug 2018 20:30	Agra	United States	0.2
	25 Aug 2018 20:30	Las Flores	United States	0.2
	26 Aug 2018 04:30	Emerald Bay	United States	0.2
	26 Aug 2018 04:30	Laguna Beach	United States	0.2
	26 Aug 2018 04:30	Canyon Acres	United States	0.2
	26 Aug 2018 04:30	Top of the World	United States	0.2
	26 Aug 2018 04:30	South Laguna	United States	0.2
	26 Aug 2018 04:30	El Descanso	Mexico	0.2
	26 Aug 2018 04:30	La Mision	Mexico	0.2
	25 Aug 2018 20:15	Rancho Cepeda	Mexico	0.2
	24 Aug 2018 16:30	Kailua	United States	0.2
	24 Aug 2018 16:30	Wailua	United States	0.2
	24 Aug 2018 16:30	Nahiku	United States	0.2
	25 Aug 2018 20:00	Encino Solo	Mexico	0.2
	24 Aug 2018 20:45	Estero la Bocana	Mexico	0.2
	24 Aug 2018 01:15	Halena	United States	0.2
	24 Aug 2018 01:15	Wahilauhue	United States	0.2
	24 Aug 2018 01:15	Kepuhi	United States	0.2
	24 Aug 2018 01:15	Mauna Loa	United States	0.2
	24 Aug 2018 01:15	Moomomi	United States	0.2
	24 Aug 2018 01:15	Hoolehua	United States	0.2
	24 Aug 2018 14:45	Kalaupapa	United States	0.2
	24 Aug 2018 17:30	Kihei	United States	0.2
	24 Aug 2018 17:30	Keawakapu	United States	0.2
	24 Aug 2018 17:30	Makena	United States	0.2
	24 Aug 2018 17:30	Keoneoio	United States	0.2
	26 Aug 2018 04:15	Capistrano Beach	United States	0.2
	25 Aug 2018 19:30	San Clemente	United States	0.2
	24 Aug 2018 11:30	Ulupalakua	United States	0.2
	24 Aug 2018 09:00	Makaha	United States	0.2
	24 Aug 2018 09:00	Makaha Valley	United States	0.2
	24 Aug 2018 09:00	Mokuleia	United States	0.2
	24 Aug 2018 09:00	Dillingham Ranch	United States	0.2
	24 Aug 2018 09:00	Waialua	United States	0.2
	24 Aug 2018 09:00	Haleiwa	United States	0.2
	24 Aug 2018 09:00	Kamooloa	United States	0.2
	24 Aug 2018 09:00	Kawailoa Camp	United States	0.2
	24 Aug 2018 09:00	Kawailoa Beach	United States	0.2
	26 Aug 2018 04:45	Santa Marie	Mexico	0.2
	24 Aug 2018 18:30	Honolulu	United States	0.2
	24 Aug 2018 18:30	Kahaluu	United States	0.2
	24 Aug 2018 18:30	Ahuimanu	United States	0.2
	24 Aug 2018 18:30	Heeia	United States	0.2
	24 Aug 2018 18:30	Kaneohe	United States	0.2
	24 Aug 2018 18:30	Maunawili	United States	0.2
	24 Aug 2018 18:30	Aina Haina	United States	0.2
	24 Aug 2018 18:30	Kaneohe Station	United States	0.2
	24 Aug 2018 18:30	Kailua	United States	0.2
	24 Aug 2018 18:30	Lanikai	United States	0.2
	24 Aug 2018 18:30	Waimanalo	United States	0.2
	24 Aug 2018 18:30	Maunalua	United States	0.2
	24 Aug 2018 18:30	Aiea	United States	0.2
	24 Aug 2018 18:30	Halawa	United States	0.2
	24 Aug 2018 18:30	Halawa Heights	United States	0.2
	24 Aug 2018 18:30	Aliamanu	United States	0.2
	24 Aug 2018 18:30	Waikane	United States	0.2
	24 Aug 2018 18:30	Fort Shafter	United States	0.2
	24 Aug 2018 02:30	Mahukona	United States	0.2
	24 Aug 2018 02:30	Hawi	United States	0.2
	24 Aug 2018 02:30	Kapaau	United States	0.2
	24 Aug 2018 02:30	Halaula	United States	0.2
	24 Aug 2018 02:30	Makapala	United States	0.2
	24 Aug 2018 02:30	Niulii	United States	0.2
	24 Aug 2018 10:45	Kilauea	United States	0.2
	24 Aug 2018 10:45	Wailua Homesteads	United States	0.2
	24 Aug 2018 10:45	Kealia	United States	0.2
	24 Aug 2018 10:45	Moloaa	United States	0.2
	24 Aug 2018 10:45	Kapaa	United States	0.2
	24 Aug 2018 10:45	Anahola	United States	0.2
	24 Aug 2018 10:45	Kumukumu	United States	0.2
	26 Aug 2018 01:45	Napari	Kiribati	0.2
	26 Aug 2018 01:45	Weston Point	Kiribati	0.2
	25 Aug 2018 01:45	Aguaje	Mexico	0.2
	25 Aug 2018 01:45	Ojo de Liebre	Mexico	0.2
	24 Aug 2018 10:45	Kawaihae	United States	0.2
	25 Aug 2018 09:30	Puuwai	United States	0.2
	25 Aug 2018 04:30	Bahia Asuncion	Mexico	0.2
	24 Aug 2018 16:15	Kiholo	United States	0.1
	24 Aug 2018 16:15	Weliweli	United States	0.1
	24 Aug 2018 16:15	Anaehoomalu	United States	0.1
	24 Aug 2018 16:15	Puako	United States	0.1
	24 Aug 2018 16:15	Waikoloa Village	United States	0.1
	25 Aug 2018 03:45	Mahaiula	United States	0.1
	25 Aug 2018 03:45	Kaupulehu	United States	0.1
	24 Aug 2018 18:45	Paauilo	United States	0.1
	24 Aug 2018 18:45	Kukaiau	United States	0.1
	24 Aug 2018 18:45	Ookala	United States	0.1
	24 Aug 2018 18:45	Laupahoehoe	United States	0.1
	24 Aug 2018 18:45	Papaaloa	United States	0.1
	24 Aug 2018 18:45	Weloka	United States	0.1
	24 Aug 2018 18:45	Ninole	United States	0.1
	24 Aug 2018 17:45	Kukuihaele	United States	0.1
	24 Aug 2018 10:15	Honokaa	United States	0.1
	24 Aug 2018 08:00	Waipio	United States	0.1
	25 Aug 2018 11:00	Hakalau	United States	0.1
	25 Aug 2018 11:00	Honomu	United States	0.1
	25 Aug 2018 11:00	Pepeekeo	United States	0.1
	25 Aug 2018 11:00	Wainaku	United States	0.1
	25 Aug 2018 11:00	Papaikou	United States	0.1
	25 Aug 2018 11:00	Paukaa	United States	0.1
	25 Aug 2018 11:00	Hilo	United States	0.1
	24 Aug 2018 02:30	Kaupo	United States	0.1
	24 Aug 2018 02:30	Kipahulu	United States	0.1
	24 Aug 2018 02:30	Kaeleku	United States	0.1
	24 Aug 2018 02:30	Muolea	United States	0.1
	24 Aug 2018 02:30	Haou	United States	0.1
	24 Aug 2018 02:30	Puuiki	United States	0.1
	24 Aug 2018 02:30	Hana	United States	0.1
	24 Aug 2018 17:45	Hawaiian Paradise Park	United States	0.1
	24 Aug 2018 01:45	Honaunau	United States	0.1
	24 Aug 2018 01:45	Milolii	United States	0.1
	24 Aug 2018 01:45	Hookena	United States	0.1
	24 Aug 2018 01:45	Keokea	United States	0.1
	24 Aug 2018 01:45	Kealia	United States	0.1
	24 Aug 2018 01:45	Papa	United States	0.1
	24 Aug 2018 07:00	Waiahukini	United States	0.1
	24 Aug 2018 07:00	Kaalualu	United States	0.1
	24 Aug 2018 07:00	Naalehu	United States	0.1
	24 Aug 2018 07:00	Honuapo	United States	0.1
	24 Aug 2018 07:00	Hilea	United States	0.1
	24 Aug 2018 01:45	Captain Cook	United States	0.1
	24 Aug 2018 01:45	Napoopao	United States	0.1
	24 Aug 2018 01:15	Barbers Point Housing	United States	0.1
	24 Aug 2018 01:15	Ewa	United States	0.1
	24 Aug 2018 01:15	Honouliuli	United States	0.1
	24 Aug 2018 01:15	Ewa Gentry	United States	0.1
	24 Aug 2018 01:15	Village Park	United States	0.1
	24 Aug 2018 01:15	Waipahu	United States	0.1
	24 Aug 2018 01:15	Ewa Beach	United States	0.1
	24 Aug 2018 01:15	Waipio	United States	0.1
	24 Aug 2018 01:15	Iroquois Point	United States	0.1
	24 Aug 2018 01:15	Pearl City	United States	0.1
	24 Aug 2018 01:15	Hickam Housing	United States	0.1
	24 Aug 2018 01:15	Waimalu	United States	0.1
	25 Aug 2018 11:15	Koloa	United States	0.1
	25 Aug 2018 11:15	Poipu	United States	0.1
	25 Aug 2018 11:15	Puhi	United States	0.1
	25 Aug 2018 11:15	Lihue	United States	0.1
	25 Aug 2018 11:15	Hanamaulu	United States	0.1
	25 Aug 2018 11:15	Wailua	United States	0.1
	24 Aug 2018 08:45	Nonopapa	United States	0.1
	24 Aug 2018 08:45	Kiekie	United States	0.1
	26 Aug 2018 21:00	Kahaino	United States	0.1
	24 Aug 2018 18:00	Makuu	United States	0.1
	24 Aug 2018 18:00	Hawaiian Beaches	United States	0.1
	24 Aug 2018 18:00	Pohoiki	United States	0.1
	24 Aug 2018 18:00	Koae	United States	0.1
	26 Aug 2018 21:00	Waieli	United States	0.1
	26 Aug 2018 21:00	Mana	United States	0.1
	26 Aug 2018 21:00	Kekaha	United States	0.1
	26 Aug 2018 21:00	Waimea	United States	0.1
	26 Aug 2018 21:00	Kalalau	United States	0.1
	26 Aug 2018 21:00	Pakala Village	United States	0.1
	26 Aug 2018 21:00	Makaweli	United States	0.1
	24 Aug 2018 01:45	Keauhou	United States	0.1
	24 Aug 2018 01:45	Kahaluu	United States	0.1
	24 Aug 2018 01:45	Sea View	United States	0.1
	26 Aug 2018 21:15	Haena	United States	0.1
	26 Aug 2018 21:15	Wainiha	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.