Minor earthquake, 3.9 mag has occurred near Attu Station in Alaska

A minor earthquake with magnitude 3.9 (ml/mb) was detected on Saturday, 280 km SE of Attu Station, Alaska (174 miles). The temblor was reported at 05:51:50 / 5:51 am (local time epicenter). Exact location, longitude 176.1946° East, latitude 51.1462° North, depth = 34.2 km. Global date and time of event UTC/GMT: 15/08/20 / 2020-08-15 05:51:50 / August 15, 2020 @ 5:51 am. All ids that are associated to the event: us6000bf3e. Unique identifier: us6000bf3e. The earthquake occurred at a depth of 34.2 km (21 miles).

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. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days thirty earthquakes of magnitude 3.0 or greater that have been detected nearby.

Questions or comments?

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: 280 km SE of Attu Station, Alaska.

Alaska Attu Station

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	176.1946° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.1462° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	34.2 km	Depth of the event in kilometers.
Place	280 km SE of Attu Station, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2020-08-15 05:51:50	Time when the event occurred. UTC/GMT
Updated	2020-08-15 06:37:25	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		The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.964	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.43 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	205	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	us6000bf3e	Id of event.
Event Code	6000bf3e	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000bf3e,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.9 mag has occurred near Attu Station in Alaska

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