Light earthquake, 4.2 mag strikes near Nikolski in Alaska

A light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 71 km SSE of Nikolski, Alaska (44 miles). The temblor was detected at 12:57:35 / 12:57 pm (local time epicenter). Exact time and date of event in UTC/GMT: 21/01/16 / 2016-01-21 23:57:35 / January 21, 2016 @ 11:57 pm. The earthquake occurred at a depth of 41.4 km (26 miles). Event ids that are associated to the earthquake: us10004g83. Id of event: us10004g83. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -168.3321 West, latitude 52.3882 North, depth = 41.4 km.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days thirteen and in the last 365 days three hundred and eighty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 13,000 light quakes in the world each year.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 71 km SSE of Nikolski, Alaska.

Alaska Nikolski

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	-168.3321° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.3882° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	41.4 km	Depth of the event in kilometers.
Place	71km SSE of Nikolski, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2016-01-21 23:57:35	Time when the event occurred. UTC/GMT
Updated	2016-01-22 00:42:37	Time when the event was most recently updated. UTC/GMT
Timezone offset	-660	Timezone offset from UTC in minutes at the event epicenter.
Felt	0	The total number of felt reports
CDI	1	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	reviewed	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	us	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,us,	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	0.666	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.47 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	178	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mb	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us10004g83	Id of event.
Event Code	10004g83	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us10004g83,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.2 mag strikes near Nikolski in Alaska

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