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

A minor earthquake with magnitude 3 (ml/mb) was detected on Friday, 18 kilometers (11 miles) from Big Lake in Alaska. The epicenter of the earthquake was roughly 19.3 km (12 miles) below the earth’s surface. Global date and time of event UTC/GMT: 21/12/18 / 2018-12-21 12:40:07 / December 21, 2018 @ 12:40 pm. The temblor was picked up at 03:40:07 / 3:40 am (local time epicenter). Exact location of event, longitude -150.108 West, latitude 61.3744 North, depth = 19.3 km. Unique identifier: ak20525575. Ids that are associated to the event: ak20525575.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Palmer, Gateway, Lakes. Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Earthquake epicenter was 21 km (13 miles) from Anchorage (c. 291 800 pop), 29 km (18 miles) from Eagle River (c. 24 800 pop), 31 km (19 miles) from Knik-Fairview (c. 14 900 pop), 50 km (31 miles) from Lakes (c. 8 400 pop), 46 km (28 miles) from Tanaina (c. 8 200 pop).

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

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 18 km SSW of Big Lake, Alaska. This information comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	3 mb	The magnitude for the event.
Longitude	-150.108° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	61.3744° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	19.3 km	Depth of the event in kilometers.
Place	18km SSW 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	2018-12-21 12:40:07	Time when the event occurred. UTC/GMT
Updated	2018-12-21 12:53:45	Time when the event was most recently updated. UTC/GMT
Timezone offset	-540	Timezone offset from UTC in minutes at the event epicenter.
Felt	1	The total number of felt reports
CDI	2	The maximum reported intensity for the event.
MMI	2.6	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	139	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	0.97 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	ak20525575	Id of event.
Event Code	20525575	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak20525575,	A comma-separated list of event ids that are associated to an event.

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

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