Minor earthquake 3.5 mag, Rat Islands, Aleutian Islands, Alaska

A minor earthquake magnitude 3.5 (ml/mb) strikes Rat Islands, Aleutian Islands, Alaska (0 miles) on Wednesday. Exact location of earthquake, longitude 177.2928 East, latitude 51.7041 North, depth = 64.962 km. The temblor was detected at 13:28:35 / 1:28 pm (local time epicenter). Unique identifier: us6000qudl. Ids that are associated to the event: ak0259dljj8h, us6000qudl. The epicenter was at a depth of 64.962 km (40 miles). Exact time and date of earthquake 23/07/25 / 2025-07-23 13:28:35 / July 23, 2025 @ 1:28 pm UTC/GMT.

In the past 24 hours, there have been five, in the last 10 days nine, in the past 30 days eleven and in the last 365 days ninety-one earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world.

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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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: Rat Islands, Aleutian Islands, Alaska.

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Parameter	Value	Description
Magnitude	3.5 mb	The magnitude for the event.
Longitude	177.2928° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.7041° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	64.962 km	Depth of the event in kilometers.
Place	Rat Islands, Aleutian Islands, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-07-23 13:28:35	Time when the event occurred. UTC/GMT
Updated	2025-08-13 10:26:37	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	188	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	,ak,us,	A comma-separated list of network contributors.
Number of Stations Used	30	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.795	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.47 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	195	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	us6000qudl	Id of event.
Event Code	6000qudl	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0259dljj8h,us6000qudl,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.5 mag, Rat Islands, Aleutian Islands, Alaska

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