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Minor earthquake, 3.3365667879637 mag strikes near Perryville in Alaska


Earthquake location 54.778720855713S, -156.82829284668WA minor earthquake with magnitude 3.3365667879637 (ml/mb) was detected on Thursday, 193 km SE of Perryville, Alaska (120 miles). The temblor was picked up at 22:54:20 / 10:54 pm (local time epicenter). Exact location of event, longitude -156.82829284668 West, latitude 54.778720855713 North, depth = 29.658685684204 km. Id of earthquake: ak2025xwjhkl. Event ids that are associated: ak2025xwjhkl. Date and time of earthquake in UTC/GMT: 04/12/25 / 2025-12-04 22:54:20 / December 4, 2025 @ 10:54 pm. The epicenter was at a depth of 29.658685684204 km (18 miles).

In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days four and in the last 365 days thirty-three earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 130,000 minor earthquakes in the world each year. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

How would you describe the shaking?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 193 km SE of Perryville, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.3365667879637 mb The magnitude for the event.
Longitude -156.82829284668° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.778720855713° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 29.658685684204 km Depth of the event in kilometers.
Place 193 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 2025-12-04 22:54:20 Time when the event occurred. UTC/GMT
Updated 2025-12-04 22:57:47 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 171 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 71 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.5993382930756 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.7200629854361 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 217.19074249268 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 ak2025xwjhkl Id of event.
Event Code 2025xwjhkl An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak2025xwjhkl, A comma-separated list of event ids that are associated to an event.

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