Light earthquake, 4.9958904082334 mag has occurred near Atka in Alaska

A light earthquake with magnitude 4.9958904082334 (ml/mb) was reported 85 km SE of Atka, Alaska (53 miles) on Monday. The earthquake occurred at a depth of 3.0367798805237 km (2 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 01/12/25 / 2025-12-01 22:21:04 / December 1, 2025 @ 10:21 pm UTC/GMT. All ids that are associated to the event: ak2025xquzsz. Unique identifier: ak2025xquzsz. The 4.9958904082334-magnitude earthquake has occurred at 22:21:04 / 10:21 pm (local time epicenter). Exact location of event, longitude -173.41368103027 West, latitude 51.604869842529 North, depth = 3.0367798805237 km.

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 four, in the past 30 days five and in the last 365 days one hundred and fifty-six earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 13,000 light earthquakes in the world.

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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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 85 km SE of Atka, Alaska.

Alaska Atka

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Parameter	Value	Description
Magnitude	4.9958904082334 mb	The magnitude for the event.
Longitude	-173.41368103027° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.604869842529° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	3.0367798805237 km	Depth of the event in kilometers.
Place	85 km SE of Atka, 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 22:21:04	Time when the event occurred. UTC/GMT
Updated	2025-12-01 22:31:57	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	384	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	60	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.7700799703598	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.0577051302137 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	207.84572982788	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	ak2025xquzsz	Id of event.
Event Code	2025xquzsz	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak2025xquzsz,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.9958904082334 mag has occurred near Atka in Alaska

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