Moderate earthquake, 5.3 mag has occurred near Adak in Alaska

A moderate earthquake with magnitude 5.3 (ml/mb) was detected on Friday, 95 km SSE of Adak, Alaska (59 miles). The temblor was picked up at 14:58:27 / 2:58 pm (local time epicenter). Global date and time of event UTC/GMT: 21/03/25 / 2025-03-21 14:58:27 / March 21, 2025 @ 2:58 pm. The earthquake occurred at a depth of 29.6 km (18 miles). Unique identifier: ak0253ojobmg. Ids that are associated to the event: ak0253ojobmg. Exact location of earthquake, -176.0314° West, 51.0984° North, depth 29.6 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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

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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: 95 km SSE of Adak, Alaska. This information comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	5.3 mb	The magnitude for the event.
Longitude	-176.0314° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.0984° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	29.6 km	Depth of the event in kilometers.
Place	95 km SSE 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	2025-03-21 14:58:27	Time when the event occurred. UTC/GMT
Updated	2025-03-21 15:07:35	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	3.579	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	432	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	0.48 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	ak0253ojobmg	Id of event.
Event Code	0253ojobmg	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0253ojobmg,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake, 5.3 mag has occurred near Adak in Alaska

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