Overall Green Earthquake alert in United States on 31 Dec 2018 02:35 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 6.1 in United States on 31 Dec 2018 02:35 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:	6.1M
Depth:	26.92 Km
Lat/Lon:	54.4279 , -161.4719
Event Date:	31 Dec 2018 02:35 UTC 30 Dec 2018 15:35 Local
Exposed Population:	About 1000 people within 100km
Source:	NEIC us2000izcv
Inserted at:	31 Dec 2018 02:56 UTC
INFORM Coping capacity of the alert score:	2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		GDACS score
NEIC	0		0
us2000izcv	Scaled population (vector)	0
	C1 shakemap	-0.59
	C2 shakemap	0.53
	Country Vulnerability	0
	INFORM_normalised	1

Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.

Episode Timeline

ID	Date	Mag, Depth	MMI*	Population**	Delay (hh:mm)	Source
1243214	31 Dec 2018 02:35	5.8M, 34km	N/A	No people affected (in 100km)	00:05	NTWC
1243217	31 Dec 2018 02:35	5.5M, 26.3km	N/A	2 thousand (in 100km)	00:13	ALASKA EC
1243218	31 Dec 2018 02:35	6.1M, 26.92km	4.27	N/A (in MMI>=VII)	00:20	NEIC
1243330	31 Dec 2018 02:35	6M, 31km	4.23	N/A (in MMI>=VII)	21:16	NEIC

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 States ,of Alaska (population 304) . The alertlevel for this event is GREEN

Intensity	Population
	no people

Shakemaps Timeline

Shake id #	episodeid	Lat/Lon	Magnitude	Depth	Max MMI	Date shake (UTC)	Delay (hh:mm)
1	1243218	54.428/-161.472	6.1	26.92	4.07	31 Dec 2018 02:56	00:21	(new episode)
2	1243218	54.428/-161.472	6.1	26.92	4.27	31 Dec 2018 04:38	02:02	(upd of #1)
3	1243330	54.428/-161.472	6.1	26.92	4.27	31 Dec 2018 23:52	21:17	(new episode)
4	1243330	54.387/-161.507	6	31	4.23	31 Dec 2018 23:54	21:18	(upd of #3)

Affected Provinces

Intensity	Region Province	Country	Population
	Alaska	United States	<1000 people
	Alaska	United States	2300 people

Affected populated places. Areas of interest

Name	Region Province	Country	City class	Population	Distance
Pauloff Harbor	Alaska	United States	Village	-	80 km
Belkofski	Alaska	United States	Village	-	82 km
Sanak	Alaska	United States	Village	-	87 km
Unga	Alaska	United States	Village	-	105 km
Squaw Harbor	Alaska	United States	Village	-	109 km
Ikatan	Alaska	United States	Village	-	124 km
Morzhovoi	Alaska	United States	Village	-	129 km
Village	Alaska	United States	Village	-	136 km
Herendeen Bay	Alaska	United States	Village	-	158 km
Port Moller	Alaska	United States	Village	-	182 km
Bear River	Alaska	United States	Village	-	204 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
Pauloff Harbor	KPH	unknown				0	79 km
Cold Bay	CDB	30	Civ.	Paved	Yes	10400	118 km
Blinn Lake		15				0	123 km
King Cove	KVC	47				0	92 km
Squaw Harbor		unknown				0	107 km
Sand Point	SDP	6	Civ.	Paved	Yes	4000	116 km
False Pass	KFP	6				0	134 km
Herendeen Bay		6				0	157 km
Nelson Lagoon	NLG	4				0	177 km
Port Moller	PML	unknown				0	185 km
Johnsons Landing		40				0	195 km
Chignik Bay	KBW	unknown				0	285 km
Chignik Fisheries	KCG	8				0	287 km

Ports

Name	Country	Distance
Belkofski	Wake Island	81 km
Sanak Island	Wake Island	88 km
Cold Bay	Wake Island	117 km
King Cove	Wake Island	88 km
Unga	Wake Island	104 km
Baralof Bay	Wake Island	108 km
Fort Randal	Wake Island	115 km
Sand Point	Wake Island	117 km
Port Moller	Wake Island	183 km
Chignik	Wake Island	285 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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