Minor earthquake: M3.8 quake has struck near Adak in Alaska

A minor earthquake magnitude 3.8 (ml/mb) has occurred on Sunday, 54 km SE of Adak, Alaska (34 miles). The 3.8-magnitude earthquake was detected at 01:38:21 / 1:38 am (local time epicenter). Exact location, longitude -176.1443° West, latitude 51.5092° North, depth = 37.98 km. Date and time of earthquake in UTC/GMT: 31/12/17 / 2017-12-31 13:38:21 / December 31, 2017 @ 1:38 pm. The earthquake occurred at a depth of 37.98 km (24 miles). Event ids that are associated to the earthquake: ak17776122, us1000c2cm. Id of event: us1000c2cm.

In the past 24 hours, there have been five, in the last 10 days ten, in the past 30 days twenty-one and in the last 365 days one hundred and ninety-four earthquakes of magnitude 3.0 or greater that has occurred nearby. 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.

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What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 54 km SE of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.8 mb	The magnitude for the event.
Longitude	-176.1443° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	51.5092° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	37.98 km	Depth of the event in kilometers.
Place	54km SE 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	2017-12-31 13:38:21	Time when the event occurred. UTC/GMT
Updated	2018-01-16 18:33:18	Time when the event was most recently updated. UTC/GMT
Timezone offset	-720	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	222	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	0.388	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.36 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	184	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	us1000c2cm	Id of event.
Event Code	1000c2cm	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak17776122,us1000c2cm,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.8 quake has struck near Adak in Alaska

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