Minor earthquake: M2.8 quake has struck near Big Lake in Alaska

A minor earthquake with magnitude 2.8 (ml/mb) was reported 6 kilometers (4 miles) from Big Lake in Alaska on Friday. The temblor was detected at 09:57:08 / 9:57 am (local time epicenter). Exact location of event, longitude -150.0103 West, latitude 61.467 North, depth = 43.6 km. The epicenter of the earthquake was roughly 43.6 km (27 miles) below the earth’s surface. Unique identifier: ak20526145. Ids that are associated to the event: ak20526145. Date and time of earthquake in UTC/GMT: 21/12/18 / 2018-12-21 18:57:08 / December 21, 2018 @ 6:57 pm.

Nearest cities/city/towns to hypocenter/epicentrum was Palmer, Gateway, Lakes (min 5000 pop). The epicenter was 28 km (18 miles) from Anchorage (c. 291 800 pop), 29 km (18 miles) from Eagle River (c. 24 800 pop), 22 km (14 miles) from Knik-Fairview (c. 14 900 pop), 40 km (25 miles) from Lakes (c. 8 400 pop), 36 km (22 miles) from Tanaina (c. 8 200 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. 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-five and in the last 365 days four hundred and fifty-three earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 1,300,000 minor earthquakes in the world each year.

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 6 km SSW of Big Lake, Alaska.

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Parameter	Value	Description
Magnitude	2.8 mb	The magnitude for the event.
Longitude	-150.0103° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	61.467° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	43.6 km	Depth of the event in kilometers.
Place	6km 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 18:57:08	Time when the event occurred. UTC/GMT
Updated	2018-12-21 19:04:18	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	121	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	0.98 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	ak20526145	Id of event.
Event Code	20526145	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak20526145,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M2.8 quake has struck near Big Lake in Alaska

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