Minor earthquake 3.9 mag, 121 km SW of Nikolski, Alaska

A minor earthquake magnitude 3.9 (ml/mb) has struck on Friday, 121 km SW of Nikolski, Alaska (75 miles). Exact location, longitude -170.0999° West, latitude 52.151° North, depth = 44.918 km. Exact time and date of earthquake 04/04/25 / 2025-04-04 09:38:13 / April 4, 2025 @ 9:38 am UTC/GMT. The epicenter was at a depth of 44.918 km (28 miles). Event ids that are associated to the earthquake: ak0254bm3p72, us6000q409. Id of event: us6000q409. The temblor was reported at 09:38:13 / 9:38 am (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 two, in the last 10 days three, in the past 30 days eight and in the last 365 days two hundred and six earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 130,000 minor quakes in the world.

Questions or comments?

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: 121 km SW of Nikolski, Alaska.

Alaska Nikolski

More information

Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	-170.0999° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.151° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	44.918 km	Depth of the event in kilometers.
Place	121 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	2025-04-04 09:38:13	Time when the event occurred. UTC/GMT
Updated	2025-04-08 08:23:52	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	1.911	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	,ak,us,	A comma-separated list of network contributors.
Number of Stations Used	82	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.652	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.66 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	179	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	us6000q409	Id of event.
Event Code	6000q409	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0254bm3p72,us6000q409,	A comma-separated list of event ids that are associated to an event.

Earthquakes today

Current and latest world earthquakes breaking news, activity and articles today

Minor earthquake 3.9 mag, 121 km SW of Nikolski, Alaska

Questions or comments?

More information

Leave a ReplyCancel reply

Follow us!

Tsunami videos

Categories

Information