Minor earthquake, 3.5 mag strikes near Adak in Alaska

A minor earthquake magnitude 3.5 (ml/mb) has struck on Thursday, 80 km SSE of Adak, Alaska (50 miles). Unique identifier: us7000ply7. Ids that are associated to the event: ak0253mqpjzs, us7000ply7. Global time and date of event 20/03/25 / 2025-03-20 05:46:50 / March 20, 2025 @ 5:46 am UTC/GMT. Exact location of event, longitude -176.1864 West, latitude 51.2045 North, depth = 35 km. The 3.5-magnitude earthquake has occurred at 05:46:50 / 5:46 am (local time epicenter). The epicenter of the earthquake was roughly 35 km (22 miles) below the earth’s surface.

In the past 24 hours, there have been one hundred and twenty-nine, in the last 10 days one hundred and thirty-one, in the past 30 days one hundred and thirty-six and in the last 365 days four hundred and sixty-one earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 130,000 minor quakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Did you feel the quake?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 80 km SSE of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.5 mb	The magnitude for the event.
Longitude	-176.1864° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.2045° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35 km	Depth of the event in kilometers.
Place	80 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 05:46:50	Time when the event occurred. UTC/GMT
Updated	2025-04-06 05:21:54	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	188	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	27	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.672	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.44 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	224	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	us7000ply7	Id of event.
Event Code	7000ply7	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0253mqpjzs,us7000ply7,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.5 mag strikes near Adak in Alaska

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