Minor earthquake: M3.3 quake has struck near Adak in Alaska

A minor earthquake magnitude 3.3 (ml/mb) has occurred on Thursday, 77 km SW of Adak, Alaska (48 miles). The earthquake occurred at a depth of 45.266 km (28 miles) below the earth’s surface. Exact location of earthquake, longitude -177.5594 West, latitude 51.4788 North, depth = 45.266 km. The temblor was detected at 10:00:30 / 10:00 am (local time epicenter). Global date and time of event UTC/GMT: 29/05/25 / 2025-05-29 10:00:30 / May 29, 2025 @ 10:00 am. Id of earthquake: us6000qht1. Event ids that are associated: ak0256ul1419, us6000qht1.

In the past 24 hours, there have been eight, in the last 10 days ten, in the past 30 days twenty-seven and in the last 365 days five hundred and one 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. There are an estimated 130,000 minor quakes in the world each year.

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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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 77 km SW of Adak, Alaska. This information comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.3 mb	The magnitude for the event.
Longitude	-177.5594° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.4788° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	45.266 km	Depth of the event in kilometers.
Place	77 km SW 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	2025-05-29 10:00:30	Time when the event occurred. UTC/GMT
Updated	2025-06-06 13:46:18	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	168	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	24	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.348	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.33 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	198	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	us6000qht1	Id of event.
Event Code	6000qht1	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0256ul1419,us6000qht1,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.3 quake has struck near Adak in Alaska

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