Light earthquake 4 mag, 105 km NNW of Atka, Alaska

A light earthquake magnitude 4 (ml/mb) strikes 105 km NNW of Atka, Alaska (65 miles) on Sunday. Id of earthquake: us7000qsvd. Event ids that are associated: us7000qsvd. The epicenter was at a depth of 222.702 km (138 miles). The temblor was reported at 18:30:09 / 6:30 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 31/08/25 / 2025-08-31 18:30:09 / August 31, 2025 @ 6:30 pm UTC/GMT. Exact location of event, longitude -175.0543 West, latitude 52.9922 North, depth = 222.702 km.

Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days four and in the last 365 days fifty-one earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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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: 105 km NNW of Atka, Alaska. This information comes from the USGS Earthquake Notification Service.

Alaska Atka

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	-175.0543° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.9922° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	222.702 km	Depth of the event in kilometers.
Place	105 km NNW 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	2025-08-31 18:30:09	Time when the event occurred. UTC/GMT
Updated	2025-09-21 17:07:52	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	246	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	,us,	A comma-separated list of network contributors.
Number of Stations Used	28	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.949	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.78 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	68	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	us7000qsvd	Id of event.
Event Code	7000qsvd	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000qsvd,	A comma-separated list of event ids that are associated to an event.

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Light earthquake 4 mag, 105 km NNW of Atka, Alaska

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