Minor earthquake, 3.4 mag was detected near Adak in Alaska

A minor earthquake magnitude 3.4 (ml/mb) has occurred on Friday, 107 km SSE of Adak, Alaska (66 miles). The temblor was picked up at 15:52:26 / 3:52 pm (local time epicenter). The earthquake was roughly at a depth of 35 km (22 miles). All ids that are associated to the event: ak0253ok8gx6, us7000pmbc. Unique identifier: us7000pmbc. Date and time of earthquake in UTC/GMT: 21/03/25 / 2025-03-21 15:52:26 / March 21, 2025 @ 3:52 pm. Exact location of event, longitude -175.9644 West, latitude 51.0064 North, depth = 35 km.

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been seventy-six, in the last 10 days one hundred and six, in the past 30 days one hundred and eleven and in the last 365 days four hundred and eleven earthquakes of magnitude 3.0 or greater that has occurred nearby.

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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 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: 107 km SSE of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.4 mb	The magnitude for the event.
Longitude	-175.9644° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.0064° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35 km	Depth of the event in kilometers.
Place	107 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	2025-03-21 15:52:26	Time when the event occurred. UTC/GMT
Updated	2025-03-29 19:13:22	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		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	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	14	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.9	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.28 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	246	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	us7000pmbc	Id of event.
Event Code	7000pmbc	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0253ok8gx6,us7000pmbc,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.4 mag was detected near Adak in Alaska

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