Light earthquake: M4.2 quake has struck near Yakutat in Alaska

A light earthquake magnitude 4.2 (ml/mb) has struck on Monday, 105 km N of Yakutat, Alaska (65 miles). Exact location of event, longitude -139.864 West, latitude 60.495 North, depth = 5 km. Event id: ak2025ydscin. Ids that are associated to the earthquake: ak2025ydscin. The 4.2-magnitude earthquake has occurred at 22:51:56 / 10:51 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 5 km (3 miles) below the earth’s surface. Global date and time of event UTC/GMT: 08/12/25 / 2025-12-08 22:51:56 / December 8, 2025 @ 10:51 pm.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been fifty-one, in the last 10 days two hundred and ninety-seven, in the past 30 days two hundred and ninety-seven and in the last 365 days three hundred and thirteen earthquakes of magnitude 3.0 or greater that was reported nearby.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking 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: 105 km N of Yakutat, Alaska. This data comes from the USGS Earthquake Notification Service.

Alaska Yakutat

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	-139.864° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	60.495° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	5 km	Depth of the event in kilometers.
Place	105 km N of Yakutat, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-12-08 22:51:56	Time when the event occurred. UTC/GMT
Updated	2025-12-08 23:02:16	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	271	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	72	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	2.2 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	49	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	ak2025ydscin	Id of event.
Event Code	2025ydscin	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak2025ydscin,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.2 quake has struck near Yakutat in Alaska

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