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

Posted by admin on December 26, 2025 0 Comments

Earthquake location 54.771S, -156.887WA light earthquake magnitude 4.2 (ml/mb) has occurred on Friday, 191 km SE of Perryville, Alaska (119 miles). Global time and date of event 26/12/25 / 2025-12-26 00:09:45 / December 26, 2025 @ 12:09 am UTC/GMT. Unique identifier: ak2025zjaano. Ids that are associated to the event: ak2025zjaano. Exact location of event, depth 44.8 km, -156.887° West, 54.771° North. 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 44.8 km (28 miles) below the earth’s surface. The 4.2-magnitude earthquake has occurred at 00:09:45 / 12:09 am (local time epicenter).

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

How would you describe the shaking?

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. 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: 191 km SE of Perryville, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -156.887° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.771° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 44.8 km Depth of the event in kilometers.
Place 191 km SE of Perryville, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-12-26 00:09:45 Time when the event occurred. UTC/GMT
Updated 2025-12-26 00:15:29 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 1.924 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 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 188 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.8 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.9 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 186 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 ak2025zjaano Id of event.
Event Code 2025zjaano An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak2025zjaano, A comma-separated list of event ids that are associated to an event.

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