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Light earthquake 4.1 mag, 12 km S of Big Lake, Alaska

Earthquake location 61.4059S, -149.9221WA light earthquake with magnitude 4.1 (ml/mb) was reported 12 kilometers (7 miles) from Big Lake in Alaska on Wednesday. A tsunami warning has been issued near Big Lake in Alaska (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: ak019gjee93, at00pl39jk. Id of event: ak019gjee93. The 4.1-magnitude earthquake has occurred at 15:04:31 / 3:04 pm (local time epicenter). The earthquake occurred at a depth of 18.3 km (11 miles). Exact location of event, longitude -149.9221 West, latitude 61.4059 North, depth = 18.3 km. Global time and date of event 10/01/19 / 2019-01-10 00:04:31 / January 10, 2019 @ 12:04 am UTC/GMT.

Event epicenter was 21 km (13 miles) from Anchorage (c. 291 800 pop), 21 km (13 miles) from Eagle River (c. 24 800 pop), 21 km (13 miles) from Knik-Fairview (c. 14 900 pop), 39 km (25 miles) from Lakes (c. 8 400 pop), 36 km (22 miles) from Tanaina (c. 8 200 pop), 32 km (20 miles) from Wasilla (c. 7 800 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Palmer, Gateway, Lakes (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days twenty-one, in the past 30 days fifty-nine and in the last 365 days four hundred and ninety-seven earthquakes of magnitude 3.0 or greater that has struck near.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 12 km S of Big Lake, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -149.9221° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.4059° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 18.3 km Depth of the event in kilometers.
Place 12km 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 2019-01-10 00:04:31 Time when the event occurred. UTC/GMT
Updated 2019-01-10 00:14:20 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 37 The total number of felt reports
CDI 3.4 The maximum reported intensity for the event.
MMI 4.56 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 1 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 271 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,at, 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 0.79 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 ak019gjee93 Id of event.
Event Code 019gjee93 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak019gjee93,at00pl39jk, A comma-separated list of event ids that are associated to an event.

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