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Minor earthquake 2.8 mag, 12 km SSW of Big Lake, Alaska

Posted by admin on December 4, 2018 0 Comments

Earthquake location 61.422S, -150.0461WA minor earthquake magnitude 2.8 (ml/mb) has occurred on Tuesday, 12 kilometers (7 miles) from Big Lake in Alaska. Exact location of event, depth 20 km, -150.0461° West, 61.422° North. Global time and date of event 04/12/18 / 2018-12-04 14:28:59 / December 4, 2018 @ 2:28 pm UTC/GMT. The temblor was picked up at 05:28:59 / 5:28 am (local time epicenter). The epicenter of the earthquake was roughly 20 km (12 miles) below the earth’s surface. Id of earthquake: ak20442213. Event ids that are associated: ak20442213.

Country/countries that might be effected, United States (c. 310 233 000 pop). Event epicenter was 24 km (15 miles) from Anchorage (c. 291 800 pop), 28 km (17 miles) from Eagle River (c. 24 800 pop), 26 km (16 miles) from Knik-Fairview (c. 14 900 pop), 44 km (27 miles) from Lakes (c. 8 400 pop), 40 km (25 miles) from Tanaina (c. 8 200 pop). Closest city/cities/towns to epicentrum/hypocenter was Palmer, Gateway, Lakes (min 5000 pop).

In the past 24 hours, there have been fifteen, in the last 10 days two hundred and seven, in the past 30 days two hundred and nine and in the last 365 days two hundred and sixty-five earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 1,300,000 minor earthquakes in the world each year. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 12 km SSW of Big Lake, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -150.0461° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.422° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20 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 2018-12-04 14:28:59 Time when the event occurred. UTC/GMT
Updated 2018-12-04 14:34:26 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 0.82 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 ak20442213 Id of event.
Event Code 20442213 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20442213, A comma-separated list of event ids that are associated to an event.

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