Minor earthquake 3.7 mag, 256 km W of Adak, Alaska

A minor earthquake magnitude 3.7 (ml/mb) strikes 256 km W of Adak, Alaska (159 miles) on Monday. Exact location, longitude 179.6384° East, latitude 52.059° North, depth = 133.018 km. The temblor was reported at 13:32:25 / 1:32 pm (local time epicenter). Exact time and date of earthquake 01/12/25 / 2025-12-01 13:32:25 / December 1, 2025 @ 1:32 pm UTC/GMT. The earthquake was roughly at a depth of 133.018 km (83 miles). Unique identifier: us7000rewc. Ids that are associated to the event: ak2025xqdest, us7000rewc.

Each year there are an estimated 130,000 minor quakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days eight and in the last 365 days one hundred and two earthquakes of magnitude 3.0 or greater that has struck near.

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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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 256 km W of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.7 mb	The magnitude for the event.
Longitude	179.6384° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.059° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	133.018 km	Depth of the event in kilometers.
Place	256 km W 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	2025-12-01 13:32:25	Time when the event occurred. UTC/GMT
Updated	2025-12-02 06:36:12	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	211	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	86	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.07	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.78 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	125	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	us7000rewc	Id of event.
Event Code	7000rewc	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak2025xqdest,us7000rewc,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.7 mag, 256 km W of Adak, Alaska

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