Minor earthquake, 3.4 mag strikes near Adak in Alaska

A minor earthquake magnitude 3.4 (ml/mb) has struck on Thursday, 65 km SSE of Adak, Alaska (40 miles). The earthquake occurred at a depth of 21.4 km (13 miles). Unique identifier: ak0253mwi2ek. Ids that are associated to the event: ak0253mwi2ek. The 3.4-magnitude earthquake was detected at 15:19:36 / 3:19 pm (local time epicenter). Global time and date of event 20/03/25 / 2025-03-20 15:19:36 / March 20, 2025 @ 3:19 pm UTC/GMT. Exact location of earthquake, -176.2899° West, 51.3211° North, depth 21.4 km.

There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been fifteen, in the last 10 days eighteen, in the past 30 days twenty-four and in the last 365 days three hundred and fifty earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

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Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 65 km SSE of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.4 mb	The magnitude for the event.
Longitude	-176.2899° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.3211° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	21.4 km	Depth of the event in kilometers.
Place	65 km SSE 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	2025-03-20 15:19:36	Time when the event occurred. UTC/GMT
Updated	2025-03-20 19:07:06	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	1.388	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	178	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	0.89 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	ak0253mwi2ek	Id of event.
Event Code	0253mwi2ek	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0253mwi2ek,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.4 mag strikes near Adak in Alaska

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