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Light earthquake: M4.0180420794226 quake has struck near Yakutat in Alaska

Posted by admin on December 7, 2025 0 Comments

Earthquake location 60.324569702148S, -139.38897705078WA light earthquake with magnitude 4.0180420794226 (ml/mb) was detected on Saturday, 88 km NNE of Yakutat, Alaska (55 miles). The 4.0180420794226-magnitude earthquake was detected at 22:42:51 / 10:42 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -139.38897705078 West, latitude 60.324569702148 North, depth = 10 km. Exact time and date of event in UTC/GMT: 06/12/25 / 2025-12-06 22:42:51 / December 6, 2025 @ 10:42 pm. The epicenter was at a depth of 10 km (6 miles). Unique identifier: ak2025yaaggd. Ids that are associated to the event: ak2025yaaggd.

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

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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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 88 km NNE of Yakutat, Alaska.

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More information

Parameter Value Description
Magnitude 4.0180420794226 mb The magnitude for the event.
Longitude -139.38897705078° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 60.324569702148° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 88 km NNE 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 2025-12-06 22:42:51 Time when the event occurred. UTC/GMT
Updated 2025-12-07 01:29:45 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 automatic 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 248 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 25 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.6575990319252 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.5486212739486 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 82.182861328125 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 ak2025yaaggd Id of event.
Event Code 2025yaaggd An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak2025yaaggd, A comma-separated list of event ids that are associated to an event.

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