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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag was detected near Yakutat in Alaska

Posted by admin on December 13, 2025 0 Comments

Earthquake location 60.4962S, -139.6979WA light earthquake magnitude 4 (ml/mb) has occurred on Saturday, 105 km N of Yakutat, Alaska (65 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us6000rsz9. Ids that are associated to the earthquake: ak2025yaainu, us6000rsz9. The epicenter of the earthquake was roughly 5 km (3 miles) below the earth’s surface. The 4-magnitude earthquake has occurred at 22:42:49 / 10:42 pm (local time epicenter). Exact location of event, longitude -139.6979 West, latitude 60.4962 North, depth = 5 km. Exact time and date of earthquake 06/12/25 / 2025-12-06 22:42:49 / December 6, 2025 @ 10:42 pm UTC/GMT.

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

Questions or comments?

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: 105 km N of Yakutat, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -139.6979° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 60.4962° 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 2025-12-06 22:42:49 Time when the event occurred. UTC/GMT
Updated 2025-12-13 03:35:18 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 246 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak,us, A comma-separated list of network contributors.
Number of Stations Used 35 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.487 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.49 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 45 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 us6000rsz9 Id of event.
Event Code 6000rsz9 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak2025yaainu,us6000rsz9, A comma-separated list of event ids that are associated to an event.

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