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Minor earthquake, 3.4 mag strikes near Atka in Alaska



Earthquake location 51.6056S, -175.2758WA minor earthquake magnitude 3.4 (ml/mb) strikes 98 km SW of Atka, Alaska (61 miles) on Tuesday. Exact location of earthquake, -175.2758° West, 51.6056° North, depth 25 km. Exact time and date of event in UTC/GMT: 22/12/15 / 2015-12-22 15:07:46 / December 22, 2015 @ 3:07 pm. The temblor was reported at 03:07:46 / 3:07 am (local time epicenter). The earthquake occurred at a depth of 25 km (16 miles) below the earth’s surface. Unique identifier: us100048x2. Ids that are associated to the event: ak12293336, us100048x2.

Each year there are an estimated 130,000 minor quakes in the world. In the past 24 hours, there have been thirteen, in the last 10 days eighteen, in the past 30 days twenty-three and in the last 365 days two hundred and thirty-four earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

How would you describe the shaking?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 98 km SW of Atka, Alaska.

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More information

Parameter Value Description
Magnitude 3.4 mb The magnitude for the event.
Longitude -175.2758° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.6056° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 25 km Depth of the event in kilometers.
Place 98km SW of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-12-22 15:07:46 Time when the event occurred. UTC/GMT
Updated 2016-01-19 21:01:11 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 178 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 0.48 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 us100048x2 Id of event.
Event Code 100048x2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak12293336,us100048x2, A comma-separated list of event ids that are associated to an event.

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