Moderate earthquake 5.3 mag, 53 km SSE of Adak, Alaska

A moderate earthquake magnitude 5.3 (ml/mb) has occurred on Monday, 53 km SSE of Adak, Alaska (33 miles). Unique identifier: ak2025yqeqgg. Ids that are associated to the event: ak2025yqeqgg. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 18:03:52 / 6:03 pm (local time epicenter). The epicenter of the earthquake was roughly 4.4 km (3 miles) below the earth’s surface. Exact location, longitude -176.377° West, latitude 51.416° North, depth = 4.4 km. Exact time and date of earthquake 15/12/25 / 2025-12-15 18:03:52 / December 15, 2025 @ 6:03 pm UTC/GMT.

There are an estimated 1320 moderate earthquakes in the world each year. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days seventeen and in the last 365 days three hundred and thirty-eight earthquakes of magnitude 3.0 or greater that was reported nearby.

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Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 53 km SSE of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	5.3 mb	The magnitude for the event.
Longitude	-176.377° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.416° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	4.4 km	Depth of the event in kilometers.
Place	53 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	2025-12-15 18:03:52	Time when the event occurred. UTC/GMT
Updated	2025-12-15 18:18:58	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	1	The total number of felt reports
CDI	3.4	The maximum reported intensity for the event.
MMI	6.535	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	432	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	40	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.4	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.8 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	202	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	ak2025yqeqgg	Id of event.
Event Code	2025yqeqgg	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak2025yqeqgg,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake 5.3 mag, 53 km SSE of Adak, Alaska

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