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Minor earthquake, 3.1 mag has occurred near Big Lake in Alaska

Earthquake location 61.457S, -150.0541WA minor earthquake with magnitude 3.1 (ml/mb) was detected on Friday, 8 kilometers (5 miles) from Big Lake in Alaska. The temblor was reported at 21:52:48 / 9:52 pm (local time epicenter). Global time and date of event 01/12/18 / 2018-12-01 06:52:48 / December 1, 2018 @ 6:52 am UTC/GMT. The earthquake was roughly at a depth of 20.2 km (13 miles). Exact location, longitude -150.0541° West, latitude 61.457° North, depth = 20.2 km. Event id: ak20421612. Ids that are associated to the earthquake: ak20421612.

Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the earthquake was 28 km (17 miles) from Anchorage (c. 291 800 pop), 30 km (19 miles) from Eagle River (c. 24 800 pop), 25 km (15 miles) from Knik-Fairview (c. 14 900 pop), 43 km (27 miles) from Lakes (c. 8 400 pop), 38 km (24 miles) from Tanaina (c. 8 200 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Palmer, Gateway, Lakes.

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

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 8 km SW of Big Lake, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -150.0541° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.457° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.2 km Depth of the event in kilometers.
Place 8km SW 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 2018-12-01 06:52:48 Time when the event occurred. UTC/GMT
Updated 2018-12-01 06:59:23 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 0.95 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 ak20421612 Id of event.
Event Code 20421612 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20421612, A comma-separated list of event ids that are associated to an event.

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