Minor earthquake, 3.8 mag strikes near Adak in Alaska

A minor earthquake with magnitude 3.8 (ml/mb) was reported 87 km S of Adak, Alaska (54 miles) on Friday. Unique identifier: us6000q665. Ids that are associated to the event: us6000q665. The epicenter was at a depth of 12.416 km (8 miles). Exact time and date of earthquake 04/04/25 / 2025-04-04 05:29:59 / April 4, 2025 @ 5:29 am UTC/GMT. Exact location of earthquake, longitude -176.4122 West, latitude 51.0969 North, depth = 12.416 km. The temblor was picked up at 05:29:59 / 5:29 am (local time epicenter).

In the past 24 hours, there have been three, in the last 10 days eight, in the past 30 days one hundred and fifty-eight and in the last 365 days four hundred and eighty-six earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 130,000 minor earthquakes in the world each year. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Did you feel anything?

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: 87 km S of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.8 mb	The magnitude for the event.
Longitude	-176.4122° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.0969° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	12.416 km	Depth of the event in kilometers.
Place	87 km S 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	2025-04-04 05:29:59	Time when the event occurred. UTC/GMT
Updated	2025-04-16 10:40:17	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	222	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	22	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.887	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.93 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	192	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	us6000q665	Id of event.
Event Code	6000q665	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000q665,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.8 mag strikes near Adak in Alaska

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