Overall Green Earthquake alert in United Kingdom on 17 Feb 2018 14:31 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.

M 4.9 in United Kingdom on 17 Feb 2018 14:31 UTC

Hazard models

EQ parameters

Shakemap

Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude:	4.9M
Depth:	10 Km
Lat/Lon:	51.65 , -3.83
Event Date:	17 Feb 2018 14:31 UTC 17 Feb 2018 14:31 Local
Exposed Population:	4090000 people within 100km
Source:	EMSC 649041
Inserted at:	17 Feb 2018 14:43 UTC
INFORM Coping capacity of the alert score	1.4 (United Kingdom)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
EMSC	0		0.3
649041	Scaled population (vector)	6.88
	C1 earthquake	1
	C2 earthquake	0
	Country Vulnerability	0
	INFORM_normalised	0.56

Maximum expected impact using different data sources.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1199424		0.3	17 Feb 2018 14:31	4.9M, 10km	N/A	4.1 million (in 100km)		00:12	EMSC
1199425		0.2	17 Feb 2018 14:31	4.7M, 10km	N/A	4.1 million (in 100km)		00:17	EMSC

The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.

The episode that has the last updated information.

* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in United Kingdom , Division of Wales (population 2,912,776) . The nearest places are Melyn, Neath, Skewen, Briton Ferry, Llandarcy, Cadoxton, Cimla, Bryncoch, Birchgrove, Baglan, and Bristol.

Radius	Population
100 km	4.1 million people
75 km	2.5 million people
50 km	1.7 million people
20 km	460000 people
10 km	240000 people
5 km	67000 people
2 km	17000 people

Affected Provinces

Region Province	Country	Population
Wales	United Kingdom	2.9 million people

Affected populated places

Name	Region Province	Country	City class	Population	Distance
Melyn	Neath Port Talbot, Wales	United Kingdom	Village	-	1 km
Neath	Neath Port Talbot, Wales	United Kingdom	City	47000 people	1 km
Skewen	Neath Port Talbot, Wales	United Kingdom	Village	-	2 km
Briton Ferry	Neath Port Talbot, Wales	United Kingdom	Village	7200 people	2 km
Llandarcy	Neath Port Talbot, Wales	United Kingdom	Village	-	2 km
Cadoxton	Neath Port Talbot, Wales	United Kingdom	Village	-	3 km
Cimla	Neath Port Talbot, Wales	United Kingdom	Village	-	3 km
Bryncoch	Neath Port Talbot, Wales	United Kingdom	Village	-	3 km
Birchgrove	Swansea, Wales	United Kingdom	Village	-	4 km
Baglan	Neath Port Talbot, Wales	United Kingdom	Village	7400 people	4 km
Trallwyn	Swansea, Wales	United Kingdom	Village	-	4 km
Llansamlet	Swansea, Wales	United Kingdom	Village	5800 people	5 km
Tonna	Neath Port Talbot, Wales	United Kingdom	Village	2100 people	5 km
Crymlyn Burrows	Swansea, Wales	United Kingdom	Village	-	5 km
Bryn	Swansea, Wales	United Kingdom	Village	-	5 km
Cilfrew	Neath Port Talbot, Wales	United Kingdom	Village	-	5 km
Baglan Moor	Neath Port Talbot, Wales	United Kingdom	Village	-	6 km
Fforest Goch	Neath Port Talbot, Wales	United Kingdom	Village	-	6 km
Cwmafon	Neath Port Talbot, Wales	United Kingdom	Village	-	6 km
Pentrechwyth	Swansea, Wales	United Kingdom	Village	-	6 km
Clydach	Swansea, Wales	United Kingdom	Village	9200 people	6 km
Port Talbot	Neath Port Talbot, Wales	United Kingdom	City	38000 people	6 km
Pontrhydyfen	Neath Port Talbot, Wales	United Kingdom	Village	-	6 km
Pentrepoeth	Swansea, Wales	United Kingdom	Village	-	7 km
Trebanos	Neath Port Talbot, Wales	United Kingdom	Village	-	7 km
Wernfadog	Swansea, Wales	United Kingdom	Village	-	7 km
Tonmawr	Neath Port Talbot, Wales	United Kingdom	Village	-	7 km
Port Tennant	Swansea, Wales	United Kingdom	Village	-	7 km
Cwmavon	Neath Port Talbot, Wales	United Kingdom	Village	-	7 km
Vardre	Swansea, Wales	United Kingdom	Village	-	7 km
Landore	Swansea, Wales	United Kingdom	Village	6700 people	7 km
Gellinudd	Neath Port Talbot, Wales	United Kingdom	Village	-	8 km
Penycae	Neath Port Talbot, Wales	United Kingdom	Village	-	8 km
Morriston	Swansea, Wales	United Kingdom	Village	17000 people	8 km
Pontardawe	Neath Port Talbot, Wales	United Kingdom	Village	9200 people	8 km
Maritime Quarter	Swansea, Wales	United Kingdom	Village	-	8 km
Goytre	Neath Port Talbot, Wales	United Kingdom	Village	-	8 km
Treboeth	Swansea, Wales	United Kingdom	Village	-	8 km
Pantlasau	Swansea, Wales	United Kingdom	Village	-	8 km
Clyne	Neath Port Talbot, Wales	United Kingdom	Village	-	8 km
Brynhyfryd	Swansea, Wales	United Kingdom	Village	-	8 km
Abertawe	Swansea, Wales	United Kingdom	Major city	170000 people	8 km
Craig-Cefn-Parc	Swansea, Wales	United Kingdom	Village	-	8 km
Cilybebyll	Neath Port Talbot, Wales	United Kingdom	Village	4600 people	8 km
Rhydypandy	Swansea, Wales	United Kingdom	Village	-	9 km
Cynonville	Neath Port Talbot, Wales	United Kingdom	Village	-	9 km
Llangyfelach	Swansea, Wales	United Kingdom	Village	-	9 km
Cilmaengwym	Neath Port Talbot, Wales	United Kingdom	Village	-	9 km
Cwmdu	Swansea, Wales	United Kingdom	Village	-	9 km
Gendros	Swansea, Wales	United Kingdom	Village	-	9 km
Rhydyfro	Neath Port Talbot, Wales	United Kingdom	Village	-	10 km
Abergarwed	Neath Port Talbot, Wales	United Kingdom	Village	-	10 km
Uplands	Swansea, Wales	United Kingdom	Village	-	10 km
Margam	Neath Port Talbot, Wales	United Kingdom	Village	1800 people	10 km
Ravenhill	Swansea, Wales	United Kingdom	Village	-	10 km
Salem	Swansea, Wales	United Kingdom	Village	-	10 km
Duffryn	Neath Port Talbot, Wales	United Kingdom	Village	-	11 km
Crynant	Neath Port Talbot, Wales	United Kingdom	Village	1600 people	11 km
Cockett	Swansea, Wales	United Kingdom	Village	13000 people	11 km
Abercregan	Neath Port Talbot, Wales	United Kingdom	Village	-	11 km
Fforestfach	Swansea, Wales	United Kingdom	Village	-	11 km
Sketty	Swansea, Wales	United Kingdom	Village	-	11 km
Ynysfadog	Neath Port Talbot, Wales	United Kingdom	Village	-	11 km
Godrergraig	Neath Port Talbot, Wales	United Kingdom	Village	-	11 km
Resolven	Neath Port Talbot, Wales	United Kingdom	Village	2400 people	12 km
Nantyffyllon	Bridgend, Wales	United Kingdom	Village	-	12 km
Tircoed	Swansea, Wales	United Kingdom	Village	-	12 km
Penllergaer	Swansea, Wales	United Kingdom	Village	-	12 km
Caerau	Bridgend, Wales	United Kingdom	Village	-	12 km
Ystalyfera	Neath Port Talbot, Wales	United Kingdom	Village	5200 people	13 km
Felindre	Swansea, Wales	United Kingdom	Village	-	13 km
Maesteg	Bridgend, Wales	United Kingdom	Village	21000 people	13 km
Cymer	Neath Port Talbot, Wales	United Kingdom	Village	-	13 km
Garden Village	Swansea, Wales	United Kingdom	Village	-	13 km
Killay	Swansea, Wales	United Kingdom	Village	4400 people	13 km
Pontlliw	Swansea, Wales	United Kingdom	Village	1500 people	13 km
Waunarlwydd	Swansea, Wales	United Kingdom	Village	-	13 km
Blackpill	Swansea, Wales	United Kingdom	Village	-	13 km
Gurnos	Powys, Wales	United Kingdom	Village	-	14 km
Bolgoed	Swansea, Wales	United Kingdom	Village	-	14 km
Nant-y-Cafn	Neath Port Talbot, Wales	United Kingdom	Village	-	14 km
West Cross	Swansea, Wales	United Kingdom	Village	-	14 km
Cwmfelin	Bridgend, Wales	United Kingdom	Village	-	14 km
Glyncorrwg	Neath Port Talbot, Wales	United Kingdom	Village	7300 people	14 km
Dunvant	Swansea, Wales	United Kingdom	Village	5200 people	14 km
Gowerton	Swansea, Wales	United Kingdom	Village	-	15 km
Mumbles	Swansea, Wales	United Kingdom	Village	-	15 km
Cwmgors	Neath Port Talbot, Wales	United Kingdom	Village	-	15 km
Rhiwfawr	Neath Port Talbot, Wales	United Kingdom	Village	-	15 km
Grovesend	Swansea, Wales	United Kingdom	Village	-	15 km
Gorseinon	Swansea, Wales	United Kingdom	Village	18000 people	15 km
Cwmdu	Bridgend, Wales	United Kingdom	Village	-	15 km
Cwmtwrch	Powys, Wales	United Kingdom	Village	-	15 km
Llangynwyd	Bridgend, Wales	United Kingdom	Village	-	15 km
Abergwynfi	Neath Port Talbot, Wales	United Kingdom	Village	-	15 km
Upper Killay	Swansea, Wales	United Kingdom	Village	-	15 km
Seven Sisters	Neath Port Talbot, Wales	United Kingdom	Village	2600 people	15 km
Ystradgynlais	Powys, Wales	United Kingdom	Village	5200 people	15 km
Caswell	Swansea, Wales	United Kingdom	Village	-	16 km
Clyne Common	Swansea, Wales	United Kingdom	Village	-	16 km

see full list

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)	Distance
Swansea Fairwood Common	SWS	90	Civ.	Paved	Yes	4800	18 km
St Athan		50	Mil.	Paved	Yes	5900	39 km
Cardiff	CWL	67	Civ.	Paved	Yes	7700	44 km
Chivenor		8				0	66 km
Aberporth		130				0	72 km
Haverfordwest	HAW	47	Civ.	Paved	No	5000	81 km
Bristol	BRS	189	Civ.	Paved	Yes	6500	83 km
Filton	FZO	69	Civ.	Paved	Yes	8000	87 km
Brawdy		112				0	93 km
Dunkeswell		259	Civ.	Paved	No	3100	97 km
Merryfield Navy		45	Mil.	Paved	No	5900	99 km

Ports

Name	LOCODE	Country	Distance
Neath		United Kingdom	2 km
Port Talbot	GBPTB	United Kingdom	6 km
Swansea	GBSWA	United Kingdom	8 km
Llanelly		United Kingdom	23 km
Lynmouth		United Kingdom	46 km
Barry	GBBAD	United Kingdom	47 km
Cardiff	GBCDF	United Kingdom	50 km
Ilfracombe		United Kingdom	52 km
Minehead		United Kingdom	55 km
Newport	GBNPT	United Kingdom	59 km
Tenby		United Kingdom	60 km
Watchet	GBWAT	United Kingdom	62 km
Barnstaple		United Kingdom	64 km
Weston-Super-Mare	GBWSM	United Kingdom	67 km
Redcliff Bay	GBREB	United Kingdom	73 km
Appledore	GBAPP	United Kingdom	73 km
Burnham On Sea		United Kingdom	74 km
Cardigan		United Kingdom	74 km
Bideford	GBBID	United Kingdom	74 km
Portishead	GBPTH	United Kingdom	75 km
Pembroke	GBPED	United Kingdom	76 km
Pembroke Dock	GBPED	United Kingdom	76 km
Portbury	GBPRU	United Kingdom	78 km
Avonmouth	GBAVO	United Kingdom	79 km
Lundy Island		United Kingdom	79 km
Bristol	GBBRS	United Kingdom	80 km
Chepstow	GBCHT	United Kingdom	81 km
Bridgwater	GBBRW	United Kingdom	82 km
Clovelly		United Kingdom	83 km
Aberysstwyth		United Kingdom	87 km
Fishguard	GBFIS	United Kingdom	88 km
Milford Haven	GBMLF	United Kingdom	92 km
Sharpness & Gloucester	GBSSS	United Kingdom	93 km
Aberdovey		United Kingdom	98 km

Dams

Dam Name	River	Year	Distance
Usk	Usk	1955	34 km
Talybont	Caerfanell	1939	44 km
Llyn Brianne	Towy	1972	53 km
Claerwen	Claerwen	1952	69 km
Wimbleball	Haddeo	1978	71 km
Caban Coch	Elan	1904	71 km
Craig-Goch	Elan	1904	75 km
Nant-y-Moch	Afon Rheidol	1962	90 km
Chew Stoke		1956	91 km
Clywedog	Clywedog	1967	93 km

Nuclear plants

Name	Country	Reactors	Distance
HINKLEY POINT	UNITED KINGDOM	4	70 km
OLDBURY	UNITED KINGDOM	2	87 km
BERKELEY	UNITED KINGDOM	2	92 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.

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