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

Posted by admin on December 12, 2025 0 Comments

Earthquake location 60.5239S, -139.9831WA light earthquake magnitude 4.2 (ml/mb) strikes 109 km N of Yakutat, Alaska (68 miles) on Thursday. All ids that are associated to the event: ak2025yiyhab, us6000ru8c. Unique identifier: us6000ru8c. The 4.2-magnitude earthquake was detected at 19:20:44 / 7:20 pm (local time epicenter). The earthquake was roughly at a depth of 7.659 km (5 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 11/12/25 / 2025-12-11 19:20:44 / December 11, 2025 @ 7:20 pm. Exact location of event, depth 7.659 km, -139.9831° West, 60.5239° North.

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

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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 4.2 mb The magnitude for the event.
Longitude -139.9831° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 60.5239° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7.659 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 2025-12-11 19:20:44 Time when the event occurred. UTC/GMT
Updated 2025-12-12 16:38:04 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 4.481 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 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 46 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.45 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.11 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 53 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000ru8c Id of event.
Event Code 6000ru8c An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak2025yiyhab,us6000ru8c, A comma-separated list of event ids that are associated to an event.

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