Light earthquake, 4.8 mag was detected near Adak in Alaska

A light earthquake magnitude 4.8 (ml/mb) strikes 115 km SSW of Adak, Alaska (71 miles) on Sunday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 21:42:38 / 9:42 pm (local time epicenter). The earthquake was roughly at a depth of 10 km (6 miles). Unique identifier: us7000nx4z. Ids that are associated to the event: us7000nx4z. Exact location, longitude -177.2709° West, latitude 50.9124° North, depth = 10 km. Exact time and date of event in UTC/GMT: 08/12/24 / 2024-12-08 21:42:38 / December 8, 2024 @ 9:42 pm.

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been fourteen, in the last 10 days fourteen, in the past 30 days eighteen and in the last 365 days one hundred and three earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 115 km SSW of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	4.8 mb	The magnitude for the event.
Longitude	-177.2709° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	50.9124° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	115 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	2024-12-08 21:42:38	Time when the event occurred. UTC/GMT
Updated	2024-12-08 22:04:37	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	354	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	35	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.945	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.83 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	139	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	us7000nx4z	Id of event.
Event Code	7000nx4z	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000nx4z,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.8 mag was detected near Adak in Alaska

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