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Minor earthquake, 2.8 mag strikes near Unalaska in Alaska


Earthquake location 53.3061S, -167.5613WA minor earthquake magnitude 2.8 (ml/mb) strikes 92 km SW of Unalaska, Alaska (57 miles) on Friday. Exact location of earthquake, longitude -167.5613 West, latitude 53.3061 North, depth = 10.65 km. The 2.8-magnitude earthquake was detected at 11:38:24 / 11:38 am (local time epicenter). Event ids that are associated to the earthquake: ak12944416, us10004wr1. Id of event: us10004wr1. The earthquake occurred at a depth of 10.65 km (7 miles) below the earth’s surface. Global date and time of event UTC/GMT: 04/03/16 / 2016-03-04 20:38:24 / March 4, 2016 @ 8:38 pm.

In the past 24 hours, there have been five, in the last 10 days seven, in the past 30 days nine and in the last 365 days sixty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby. Every year there are an estimated 1,300,000 minor earthquakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

How would you describe the shaking?

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 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: 92 km SW of Unalaska, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -167.5613° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 53.3061° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10.65 km Depth of the event in kilometers.
Place 92km SW of Unalaska, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-03-04 20:38:24 Time when the event occurred. UTC/GMT
Updated 2016-04-02 21:58:48 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 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 121 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 0.234 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.32 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 ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10004wr1 Id of event.
Event Code 10004wr1 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak12944416,us10004wr1, A comma-separated list of event ids that are associated to an event.

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