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Minor earthquake: M3.3373138634387 quake has struck near Adak in Alaska


Earthquake location 51.037155151367S, -179.82940673828WA minor earthquake magnitude 3.3373138634387 (ml/mb) has occurred on Thursday, 240 km WSW of Adak, Alaska (149 miles). Exact location of event, depth 11.370199203491 km, -179.82940673828° West, 51.037155151367° North. Date and time of earthquake in UTC/GMT: 20/11/25 / 2025-11-20 05:53:50 / November 20, 2025 @ 5:53 am. Unique identifier: ak2025wvjhex. Ids that are associated to the event: ak2025wvjhex. The temblor was reported at 05:53:50 / 5:53 am (local time epicenter). The earthquake occurred at a depth of 11.370199203491 km (7 miles) below the earth’s surface.

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

Did you feel it?

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 240 km WSW of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 3.3373138634387 mb The magnitude for the event.
Longitude -179.82940673828° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.037155151367° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 11.370199203491 km Depth of the event in kilometers.
Place 240 km WSW of Adak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-11-20 05:53:50 Time when the event occurred. UTC/GMT
Updated 2025-12-03 18:41:21 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 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 11 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.64450442790985 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.51749686152542 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 236.85331726074 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 ak2025wvjhex Id of event.
Event Code 2025wvjhex An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak2025wvjhex, A comma-separated list of event ids that are associated to an event.

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