Minor earthquake, 3.8 mag was detected near Nikolski in Alaska

A minor earthquake with magnitude 3.8 (ml/mb) was detected on Friday, 185 km SW of Nikolski, Alaska (115 miles). Exact location, longitude -171.1032° West, latitude 51.9821° North, depth = 35 km. Global time and date of event 16/05/25 / 2025-05-16 16:11:37 / May 16, 2025 @ 4:11 pm UTC/GMT. The earthquake occurred at a depth of 35 km (22 miles) below the earth’s surface. The temblor was reported at 16:11:37 / 4:11 pm (local time epicenter). Event ids that are associated to the earthquake: ak025696okfy, us7000pzq6. Id of event: us7000pzq6.

There are an estimated 130,000 minor quakes in the world each year. 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 five, in the past 30 days fourteen and in the last 365 days one hundred and sixty-four earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 185 km SW of Nikolski, Alaska.

Alaska Nikolski

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Parameter	Value	Description
Magnitude	3.8 mb	The magnitude for the event.
Longitude	-171.1032° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.9821° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35 km	Depth of the event in kilometers.
Place	185 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 16:11:37	Time when the event occurred. UTC/GMT
Updated	2025-05-25 13:00:12	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	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	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	20	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.086	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.84 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	207	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	us7000pzq6	Id of event.
Event Code	7000pzq6	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak025696okfy,us7000pzq6,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.8 mag was detected near Nikolski in Alaska

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