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



Earthquake location 61.4121S, -150.0371WA minor earthquake with magnitude 3.1 (ml/mb) was detected on Wednesday, 12 kilometers (7 miles) from Big Lake in Alaska. Global date and time of event UTC/GMT: 02/08/17 / 2017-08-02 15:58:56 / August 2, 2017 @ 3:58 pm. The 3.1-magnitude earthquake has occurred at 06:58:56 / 6:58 am (local time epicenter). The earthquake occurred at a depth of 16.7 km (10 miles). Event id: ak16405740. Ids that are associated to the earthquake: ak16405740. Exact location of earthquake, -150.0371° West, 61.4121° North, depth 16.7 km.

Earthquake epicenter was 23 km (14 miles) from Anchorage (c. 291 800 pop), 27 km (17 miles) from Eagle River (c. 24 800 pop), 26 km (16 miles) from Knik-Fairview (c. 14 900 pop), 44 km (28 miles) from Lakes (c. 8 400 pop), 40 km (25 miles) from Tanaina (c. 8 200 pop). Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Palmer, Gateway, Lakes.

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 five, in the past 30 days six and in the last 365 days seventy-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.

Did you feel it?

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. 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 SSW of Big Lake, Alaska.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -150.0371° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.4121° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 16.7 km Depth of the event in kilometers.
Place 12km 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 2017-08-02 15:58:56 Time when the event occurred. UTC/GMT
Updated 2017-08-02 16:03:39 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 2.7 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 0.81 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 ak16405740 Id of event.
Event Code 16405740 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16405740, A comma-separated list of event ids that are associated to an event.

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