Minor earthquake 3.9 mag, 131 km SSW of Adak, Alaska

A minor earthquake magnitude 3.9 (ml/mb) has struck on Monday, 131 km SSW of Adak, Alaska (81 miles). Exact location of event, longitude -177.4915 West, latitude 50.826 North, depth = 13.678 km. The epicenter was at a depth of 13.678 km (8 miles). Event id: us7000nx7r. Ids that are associated to the earthquake: us7000nx7r. Global date and time of event UTC/GMT: 09/12/24 / 2024-12-09 03:56:08 / December 9, 2024 @ 3:56 am. The temblor was reported at 03:56:08 / 3:56 am (local time epicenter).

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

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 131 km SSW of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	-177.4915° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	50.826° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	13.678 km	Depth of the event in kilometers.
Place	131 km SSW 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	2024-12-09 03:56:08	Time when the event occurred. UTC/GMT
Updated	2024-12-09 04:40:08	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	234	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	29	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.05	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.51 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	204	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	us7000nx7r	Id of event.
Event Code	7000nx7r	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000nx7r,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.9 mag, 131 km SSW of Adak, Alaska

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