Minor earthquake, 3.9 mag was detected near Attu Station in Alaska

A minor earthquake with magnitude 3.9 (ml/mb) was detected on Wednesday, 23 km E of Attu Station, Alaska (14 miles). Id of earthquake: us6000q5f9. Event ids that are associated: us6000q5f9. Exact time and date of event in UTC/GMT: 02/04/25 / 2025-04-02 02:48:34 / April 2, 2025 @ 2:48 am. The 3.9-magnitude earthquake has occurred at 02:48:34 / 2:48 am (local time epicenter). Exact location, longitude 173.5392° East, latitude 52.8425° North, depth = 33.996 km. The earthquake occurred at a depth of 33.996 km (21 miles) below the earth’s surface.

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

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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. 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: 23 km E of Attu Station, Alaska.

Alaska Attu Station

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	173.5392° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.8425° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	33.996 km	Depth of the event in kilometers.
Place	23 km E of Attu Station, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-02 02:48:34	Time when the event occurred. UTC/GMT
Updated	2025-04-12 00:43:30	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	234	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	26	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.359	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.65 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	193	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	us6000q5f9	Id of event.
Event Code	6000q5f9	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000q5f9,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.9 mag was detected near Attu Station in Alaska

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