Minor earthquake 3.7 mag, 176 km ESE of Atka, Alaska

A minor earthquake with magnitude 3.7 (ml/mb) was detected on Tuesday, 176 km ESE of Atka, Alaska (109 miles). Exact location of earthquake, longitude -171.6897 West, latitude 51.8485 North, depth = 40.304 km. The epicenter of the earthquake was roughly 40.304 km (25 miles) below the earth’s surface. Id of earthquake: us7000pud0. Event ids that are associated: ak02555lm30w, us7000pud0. Exact time and date of earthquake 22/04/25 / 2025-04-22 22:55:06 / April 22, 2025 @ 10:55 pm UTC/GMT. The temblor was detected at 22:55:06 / 10:55 pm (local time epicenter).

In the past 24 hours, there have been two, in the last 10 days four, in the past 30 days thirteen and in the last 365 days one hundred and fifty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world.

Did you feel the quake?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 176 km ESE of Atka, Alaska.

Alaska Atka

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Parameter	Value	Description
Magnitude	3.7 mb	The magnitude for the event.
Longitude	-171.6897° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.8485° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	40.304 km	Depth of the event in kilometers.
Place	176 km ESE 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	2025-04-22 22:55:06	Time when the event occurred. UTC/GMT
Updated	2025-04-24 02:46:53	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	45	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.455	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.86 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	214	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	us7000pud0	Id of event.
Event Code	7000pud0	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak02555lm30w,us7000pud0,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.7 mag, 176 km ESE of Atka, Alaska

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