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

A minor earthquake magnitude 3.5 (ml/mb) has struck on Tuesday, Rat Islands, Aleutian Islands, Alaska (0 miles). Event ids that are associated to the earthquake: ak0256fn5qar. Id of event: ak0256fn5qar. The epicenter of the earthquake was roughly 20.6 km (13 miles) below the earth’s surface. Global date and time of event UTC/GMT: 20/05/25 / 2025-05-20 06:58:51 / May 20, 2025 @ 6:58 am. Exact location of event, longitude 177.4171 East, latitude 50.1352 North, depth = 20.6 km. The temblor was reported at 06:58:51 / 6:58 am (local time epicenter).

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

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What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: Rat Islands, Aleutian Islands, Alaska. This data comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	3.5 mb	The magnitude for the event.
Longitude	177.4171° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	50.1352° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	20.6 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	2025-05-20 06:58:51	Time when the event occurred. UTC/GMT
Updated	2025-05-23 22:41:53	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	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		The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance		Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.84 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap		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	ak0256fn5qar	Id of event.
Event Code	0256fn5qar	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0256fn5qar,	A comma-separated list of event ids that are associated to an event.

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

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