Minor earthquake, 3.8 mag strikes near Nikolski in Alaska

A minor earthquake magnitude 3.8 (ml/mb) has struck on Friday, 189 km SW of Nikolski, Alaska (117 miles). Exact location of event, longitude -171.1835 West, latitude 51.9916 North, depth = 25.7 km. Exact time and date of earthquake 16/05/25 / 2025-05-16 16:11:36 / May 16, 2025 @ 4:11 pm UTC/GMT. The epicenter of the earthquake was roughly 25.7 km (16 miles) below the earth’s surface. All ids that are associated to the event: ak025696okfy. Unique identifier: ak025696okfy. The 3.8-magnitude earthquake has occurred at 16:11:36 / 4:11 pm (local time epicenter).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days nine and in the last 365 days one hundred and fifty-eight earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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: 189 km SW of Nikolski, Alaska.

Alaska Nikolski

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Parameter	Value	Description
Magnitude	3.8 mb	The magnitude for the event.
Longitude	-171.1835° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.9916° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	25.7 km	Depth of the event in kilometers.
Place	189 km SW of Nikolski, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-05-16 16:11:36	Time when the event occurred. UTC/GMT
Updated	2025-05-16 20:16:06	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	1.725	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	ak	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,ak,	A comma-separated list of network contributors.
Number of Stations Used		The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance		Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.79 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap		The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	ml	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	ak025696okfy	Id of event.
Event Code	025696okfy	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak025696okfy,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.8 mag strikes near Nikolski in Alaska

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