Moderate earthquake, 5 mag has occurred near Adak in Alaska

A moderate earthquake magnitude 5 (ml/mb) has occurred on Friday, 264 km W of Adak, Alaska (164 miles). A tsunami warning has been issued near Adak in Alaska (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 29/08/25 / 2025-08-29 09:14:26 / August 29, 2025 @ 9:14 am UTC/GMT. The temblor was picked up at 09:14:26 / 9:14 am (local time epicenter). The epicenter was at a depth of 65 km (40 miles). Event id: at00t1r0c2. Ids that are associated to the earthquake: at00t1r0c2. Exact location of earthquake, longitude 179.575 East, latitude 51.5379 North, depth = 65 km.

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. There are an estimated 1320 moderate quakes in the world each year. In the past 24 hours, there have been three, in the last 10 days four, in the past 30 days four and in the last 365 days one hundred and four earthquakes of magnitude 3.0 or greater that have been detected nearby.

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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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 264 km W of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	5 mb	The magnitude for the event.
Longitude	179.575° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.5379° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	65 km	Depth of the event in kilometers.
Place	264 km W 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	2025-08-29 09:14:26	Time when the event occurred. UTC/GMT
Updated	2025-08-29 09:18:29	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	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	385	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	at	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,at,	A comma-separated list of network contributors.
Number of Stations Used	25	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.233562	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.32 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	147.599988192	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	at00t1r0c2	Id of event.
Event Code	00t1r0c2	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,at00t1r0c2,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake, 5 mag has occurred near Adak in Alaska

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