Light earthquake, 4 mag strikes near Adak in Alaska

A light earthquake magnitude 4 (ml/mb) has occurred on Saturday, 174 km WNW of Adak, Alaska (108 miles). The epicenter was at a depth of 243.1 km (151 miles). Id of earthquake: us7000pe0n. Event ids that are associated: ak025247iybu, us7000pe0n. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -179.0658 West, latitude 52.3376 North, depth = 243.1 km. The temblor was detected at 08:07:07 / 8:07 am (local time epicenter). Global time and date of event 15/02/25 / 2025-02-15 08:07:07 / February 15, 2025 @ 8:07 am UTC/GMT.

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 174 km WNW of Adak, Alaska. This information comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	-179.0658° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.3376° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	243.1 km	Depth of the event in kilometers.
Place	174 km WNW of Adak, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-02-15 08:07:07	Time when the event occurred. UTC/GMT
Updated	2025-03-02 09:33:35	Time when the event was most recently updated. UTC/GMT
Timezone offset		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	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	246	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	,ak,us,	A comma-separated list of network contributors.
Number of Stations Used	58	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.55	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.63 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	68	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	us7000pe0n	Id of event.
Event Code	7000pe0n	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak025247iybu,us7000pe0n,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4 mag strikes near Adak in Alaska

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