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Light earthquake, 4.1856670339906 mag was detected near Yakutat in Alaska

Posted by admin on December 8, 2025 0 Comments

Earthquake location 60.512466430664S, -140.04806518555WA light earthquake with magnitude 4.1856670339906 (ml/mb) was reported 109 km N of Yakutat, Alaska (68 miles) on Monday. Exact location, longitude -140.04806518555° West, latitude 60.512466430664° North, depth = 5 km. The 4.1856670339906-magnitude earthquake was detected at 14:44:45 / 2:44 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 5 km (3 miles) below the earth’s surface. Id of earthquake: ak2025ydbyml. Event ids that are associated: ak2025ydbyml. Exact time and date of event in UTC/GMT: 08/12/25 / 2025-12-08 14:44:45 / December 8, 2025 @ 2:44 pm.

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been fifty-six, in the last 10 days two hundred and sixty-eight, in the past 30 days two hundred and sixty-eight and in the last 365 days two hundred and eighty-eight earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 109 km N of Yakutat, Alaska.

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More information

Parameter Value Description
Magnitude 4.1856670339906 mb The magnitude for the event.
Longitude -140.04806518555° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 60.512466430664° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5 km Depth of the event in kilometers.
Place 109 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 14:44:45 Time when the event occurred. UTC/GMT
Updated 2025-12-08 14:58:52 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 270 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 70 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.43020048737526 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 2.2439410291265 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 79.824924945831 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 ak2025ydbyml Id of event.
Event Code 2025ydbyml An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak2025ydbyml, A comma-separated list of event ids that are associated to an event.

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