Light earthquake 4.062859111827 mag, 109 km SW of Adak, Alaska

A light earthquake with magnitude 4.062859111827 (ml/mb) was detected on Monday, 109 km SW of Adak, Alaska (68 miles). Exact location of earthquake, longitude -177.67488098145 West, latitude 51.137588500977 North, depth = 42.511051177979 km. Id of earthquake: ak2025xpxkax. Event ids that are associated: ak2025xpxkax. Date and time of earthquake in UTC/GMT: 01/12/25 / 2025-12-01 10:29:04 / December 1, 2025 @ 10:29 am. The epicenter was at a depth of 42.511051177979 km (26 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.062859111827-magnitude earthquake was detected at 10:29:04 / 10:29 am (local time epicenter).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days eight, in the past 30 days twelve and in the last 365 days four hundred and ninety-seven earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 13,000 light earthquakes in the world.

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How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 109 km SW of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	4.062859111827 mb	The magnitude for the event.
Longitude	-177.67488098145° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.137588500977° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	42.511051177979 km	Depth of the event in kilometers.
Place	109 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	2025-12-01 10:29:04	Time when the event occurred. UTC/GMT
Updated	2025-12-01 16:52:21	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	254	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	31	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.63456481695175	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.6674168577319 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	214.49732971191	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	ak2025xpxkax	Id of event.
Event Code	2025xpxkax	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak2025xpxkax,	A comma-separated list of event ids that are associated to an event.

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Light earthquake 4.062859111827 mag, 109 km SW of Adak, Alaska

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