Minor earthquake, 3.9 mag strikes near Attu Station in Alaska

A minor earthquake magnitude 3.9 (ml/mb) strikes 213 km WNW of Attu Station, Alaska (132 miles) on Thursday. Unique identifier: us2000a8ea. Ids that are associated to the event: us2000a8ea. The 3.9-magnitude earthquake has occurred at 18:42:44 / 6:42 pm (local time epicenter). Exact location of event, longitude 170.281 East, latitude 53.6433 North, depth = 27.6 km. The earthquake occurred at a depth of 27.6 km (17 miles). Global time and date of event 10/08/17 / 2017-08-10 07:42:44 / August 10, 2017 @ 7:42 am UTC/GMT.

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

How would you describe the shaking?

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: 213 km WNW of Attu Station, Alaska.

Alaska Attu Station

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	170.281° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	53.6433° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	27.6 km	Depth of the event in kilometers.
Place	213km WNW 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	2017-08-10 07:42:44	Time when the event occurred. UTC/GMT
Updated	2017-08-30 05:01:28	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	2.473	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.35 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	161	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	us2000a8ea	Id of event.
Event Code	2000a8ea	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us2000a8ea,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.9 mag strikes near Attu Station in Alaska

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