Minor earthquake: M3.1 quake has struck near Big Lake in Alaska

A minor earthquake magnitude 3.1 (ml/mb) has struck on Sunday, 5 kilometers (3 miles) from Big Lake in Alaska. The earthquake occurred at a depth of 33.9 km (21 miles) below the earth’s surface. All ids that are associated to the event: ak20431332. Unique identifier: ak20431332. Exact location of event, longitude -149.973 West, latitude 61.4714 North, depth = 33.9 km. The 3.1-magnitude earthquake has occurred at 05:42:46 / 5:42 am (local time epicenter). Global time and date of event 02/12/18 / 2018-12-02 14:42:46 / December 2, 2018 @ 2:42 pm UTC/GMT.

Event epicenter was 28 km (18 miles) from Anchorage (c. 291 800 pop), 27 km (17 miles) from Eagle River (c. 24 800 pop), 20 km (13 miles) from Knik-Fairview (c. 14 900 pop), 38 km (24 miles) from Lakes (c. 8 400 pop), 34 km (21 miles) from Tanaina (c. 8 200 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Palmer, Gateway, Lakes.

In the past 24 hours, there have been thirty, in the last 10 days one hundred and seventy-three, in the past 30 days one hundred and seventy-four and in the last 365 days two hundred and thirty-four earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 5 km S of Big Lake, Alaska.

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Parameter	Value	Description
Magnitude	3.1 mb	The magnitude for the event.
Longitude	-149.973° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	61.4714° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	33.9 km	Depth of the event in kilometers.
Place	5km S of Big Lake, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2018-12-02 14:42:46	Time when the event occurred. UTC/GMT
Updated	2018-12-02 14:50:08	Time when the event was most recently updated. UTC/GMT
Timezone offset	-540	Timezone offset from UTC in minutes at the event epicenter.
Felt		The total number of felt reports
CDI		The maximum reported intensity for the event.
MMI		The maximum estimated instrumental intensity for the event.
Alert Level		The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status	automatic	Indicates whether the event has been reviewed by a human.
Tsunami	0	This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG	148	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	ak	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,ak,	A comma-separated list of network contributors.
Number of Stations Used		The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance		Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.77 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap		The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	ml	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	ak20431332	Id of event.
Event Code	20431332	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak20431332,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.1 quake has struck near Big Lake in Alaska

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