Light earthquake, 4.2 mag strikes near Atka in Alaska

A light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 99 km SSE of Atka, Alaska (62 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 25/03/16 / 2016-03-25 02:58:29 / March 25, 2016 @ 2:58 am. Exact location of event, longitude -173.4078 West, latitude 51.4532 North, depth = 10 km. Event ids that are associated to the earthquake: us20005cck. Id of event: us20005cck. The temblor was detected at 14:58:29 / 2:58 pm (local time epicenter). The epicenter was at a depth of 10 km (6 miles).

Every year there are an estimated 13,000 light earthquakes in the world. 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 twenty-six, in the past 30 days sixty-two and in the last 365 days two hundred and seventy-six earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

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. 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: 99 km SSE of Atka, Alaska.

Alaska Atka

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	-173.4078° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.4532° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	99km SSE of Atka, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2016-03-25 02:58:29	Time when the event occurred. UTC/GMT
Updated	2016-03-25 03:16:27	Time when the event was most recently updated. UTC/GMT
Timezone offset	-720	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	1.768	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.26 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	194	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	us20005cck	Id of event.
Event Code	20005cck	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us20005cck,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.2 mag strikes near Atka in Alaska

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