Light earthquake, 4 mag has occurred near Adak in Alaska

A light earthquake magnitude 4 (ml/mb) has struck on Sunday, 22 km NE of Adak, Alaska (14 miles). The earthquake occurred at a depth of 127.028 km (79 miles). Exact location of earthquake, -176.4035° West, 52.0237° North, depth 127.028 km. The temblor was picked up at 09:00:53 / 9:00 am (local time epicenter). All ids that are associated to the event: ak025bt6h7i8, us7000qw4u. Unique identifier: us7000qw4u. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 14/09/25 / 2025-09-14 09:00:53 / September 14, 2025 @ 9:00 am UTC/GMT.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days six and in the last 365 days two hundred and eighty-one earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel it?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 22 km NE of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	-176.4035° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.0237° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	127.028 km	Depth of the event in kilometers.
Place	22 km NE of Adak, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-09-14 09:00:53	Time when the event occurred. UTC/GMT
Updated	2025-09-14 09:55:07	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	1	The total number of felt reports
CDI	2.2	The maximum reported intensity for the event.
MMI	3.067	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	246	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	129	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.129	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.69 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	83	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	us7000qw4u	Id of event.
Event Code	7000qw4u	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak025bt6h7i8,us7000qw4u,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4 mag has occurred near Adak in Alaska

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