Minor earthquake, 3.9 mag has occurred near Yunaska Island in Alaska

A minor earthquake with magnitude 3.9 (ml/mb) was detected on Wednesday, 74 km SE of Yunaska Island, Alaska (46 miles). The earthquake occurred at a depth of 35 km (22 miles). Exact location, longitude -169.8631° West, latitude 52.192° North, depth = 35 km. Id of earthquake: us1000bwns. Event ids that are associated: us1000bwns. Date and time of earthquake in UTC/GMT: 27/12/17 / 2017-12-27 11:39:37 / December 27, 2017 @ 11:39 am. The 3.9-magnitude earthquake has occurred at 00:39:37 / 12:39 am (local time epicenter).

In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days fourteen and in the last 365 days one hundred and seventy-three earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. 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: 74 km SE of Yunaska Island, Alaska.

Alaska Yunaska Island

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	-169.8631° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.192° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35 km	Depth of the event in kilometers.
Place	74km SE of Yunaska Island, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2017-12-27 11:39:37	Time when the event occurred. UTC/GMT
Updated	2017-12-27 12:02:25	Time when the event was most recently updated. UTC/GMT
Timezone offset	-660	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	0.632	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.6 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	189	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	us1000bwns	Id of event.
Event Code	1000bwns	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us1000bwns,	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 Yunaska Island in Alaska

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