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Light earthquake, 4.2 mag strikes near Big Lake in Alaska

Posted by admin on November 30, 2018 0 Comments

A light earthquake with magnitude 4.2 (ml/mb) was reported 6 kilometers (4 miles) from Big Lake in Alaska on Friday. The epicenter of the earthquake was roughly 21.3 km (13 miles) below the earth’s surface. Global time and date of event 30/11/18 / 2018-11-30 23:07:46 / November 30, 2018 @ 11:07 pm UTC/GMT. The temblor was detected at 14:07:46 / 2:07 pm (local time epicenter). Exact location of event, longitude -150.0247 West, latitude 61.4754 North, depth = 21.3 km. Id of earthquake: ak20420496. Event ids that are associated: ak20420496. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearby 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). Epicenter of the earthquake was 29 km (18 miles) from Anchorage (c. 291 800 pop), 30 km (18 miles) from Eagle River (c. 24 800 pop), 23 km (14 miles) from Knik-Fairview (c. 14 900 pop), 41 km (25 miles) from Lakes (c. 8 400 pop), 36 km (22 miles) from Tanaina (c. 8 200 pop), 33 km (21 miles) from Wasilla (c. 7 800 pop).

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been fifty-eight, in the last 10 days fifty-nine, in the past 30 days sixty and in the last 365 days one hundred and twenty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 6 km SW of Big Lake, Alaska. This information comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	-150.0247° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	61.4754° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	21.3 km	Depth of the event in kilometers.
Place	6km 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	2018-11-30 23:07:46	Time when the event occurred. UTC/GMT
Updated	2018-11-30 23:20:45	Time when the event was most recently updated. UTC/GMT
Timezone offset	-540	Timezone offset from UTC in minutes at the event epicenter.
Felt	0	The total number of felt reports
CDI	0	The maximum reported intensity for the event.
MMI	3.22	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	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,	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	0.92 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	ak20420496	Id of event.
Event Code	20420496	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak20420496,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.2 mag strikes near Big Lake in Alaska

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