Minor earthquake 3.5 mag, 103 km SSE of Adak, Alaska

A minor earthquake with magnitude 3.5 (ml/mb) was reported 103 km SSE of Adak, Alaska (64 miles) on Thursday. The 3.5-magnitude earthquake has occurred at 22:06:39 / 10:06 pm (local time epicenter). The earthquake occurred at a depth of 35 km (22 miles). Exact location of earthquake, longitude -176.1751 West, latitude 50.9851 North, depth = 35 km. Date and time of earthquake in UTC/GMT: 20/03/25 / 2025-03-20 22:06:39 / March 20, 2025 @ 10:06 pm. Unique identifier: us7000pmtz. Ids that are associated to the event: ak0253n0lbpk, us7000pmtz.

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

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What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 103 km SSE of Adak, Alaska. This information 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	-176.1751° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	50.9851° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35 km	Depth of the event in kilometers.
Place	103 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 22:06:39	Time when the event occurred. UTC/GMT
Updated	2025-03-31 23:33:15	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	18	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.89	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.47 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	216	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	us7000pmtz	Id of event.
Event Code	7000pmtz	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0253n0lbpk,us7000pmtz,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.5 mag, 103 km SSE of Adak, Alaska

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