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Light earthquake, 4.8 mag strikes near Atka in Alaska

Posted by admin on November 9, 2025 0 Comments

Earthquake location 52.1699S, -171.4091WA light earthquake magnitude 4.8 (ml/mb) has occurred on Sunday, 190 km E of Atka, Alaska (118 miles). The temblor was reported at 09:36:50 / 9:36 am (local time epicenter). Global time and date of event 09/11/25 / 2025-11-09 09:36:50 / November 9, 2025 @ 9:36 am UTC/GMT. Exact location of earthquake, longitude -171.4091 West, latitude 52.1699 North, depth = 43.395 km. Event ids that are associated to the earthquake: at00t5gddc, ak025edssceq, us6000rmez. Id of event: us6000rmez. A tsunami warning has been issued near Atka in Alaska (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 43.395 km (27 miles).

In the past 24 hours, there have been three, in the last 10 days five, in the past 30 days six and in the last 365 days one hundred and fourty-two earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 190 km E of Atka, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -171.4091° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.1699° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 43.395 km Depth of the event in kilometers.
Place 190 km E of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-11-09 09:36:50 Time when the event occurred. UTC/GMT
Updated 2025-11-09 09:53:46 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 3.581 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 1 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 354 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 ,at,ak,us, A comma-separated list of network contributors.
Number of Stations Used 62 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.1 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.99 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 143 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 us6000rmez Id of event.
Event Code 6000rmez An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00t5gddc,ak025edssceq,us6000rmez, A comma-separated list of event ids that are associated to an event.

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