Minor earthquake 3.7 mag, 25 km W of Chernabura Island, Alaska

A minor earthquake magnitude 3.7 (ml/mb) has struck on Thursday, 25 km W of Chernabura Island, Alaska (16 miles). The 3.7-magnitude earthquake was detected at 22:51:34 / 10:51 pm (local time epicenter). Exact location of event, longitude -159.9518 West, latitude 54.8173 North, depth = 3.3 km. All ids that are associated to the event: ak16876658, us2000avn2. Unique identifier: us2000avn2. Date and time of earthquake in UTC/GMT: 22/09/17 / 2017-09-22 07:51:34 / September 22, 2017 @ 7:51 am. The epicenter of the earthquake was roughly 3.3 km (2 miles) below the earth’s surface.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been three, in the last 10 days six, in the past 30 days nine and in the last 365 days seventy-one earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 130,000 minor earthquakes in the world.

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: 25 km W of Chernabura Island, Alaska.

Alaska Chernabura Island

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Parameter	Value	Description
Magnitude	3.7 mb	The magnitude for the event.
Longitude	-159.9518° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	54.8173° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	3.3 km	Depth of the event in kilometers.
Place	25km W of Chernabura 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	2017-09-22 07:51:34	Time when the event occurred. UTC/GMT
Updated	2017-10-13 13:19:48	Time when the event was most recently updated. UTC/GMT
Timezone offset	-540	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	211	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	,ak,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		Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.63 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	us2000avn2	Id of event.
Event Code	2000avn2	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak16876658,us2000avn2,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.7 mag, 25 km W of Chernabura Island, Alaska

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