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Minor earthquake 2.9 mag, 39 km SSW of Unalaska, Alaska


Earthquake location 53.528S, -166.6638WA minor earthquake with magnitude 2.9 (ml/mb) was detected on Tuesday, 39 km SSW of Unalaska, Alaska (24 miles). The temblor was detected at 15:18:13 / 3:18 pm (local time epicenter). The earthquake occurred at a depth of 68.1 km (42 miles) below the earth’s surface. Global time and date of event 13/09/16 / 2016-09-13 23:18:13 / September 13, 2016 @ 11:18 pm UTC/GMT. Exact location of earthquake, longitude -166.6638 West, latitude 53.528 North, depth = 68.1 km. All ids that are associated to the event: ak13967225. Unique identifier: ak13967225.

There are an estimated 130,000 minor earthquakes in the world each year. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days six and in the last 365 days ninety-four earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 3.5 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 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: 39 km SSW of Unalaska, Alaska.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude -166.6638° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 53.528° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 68.1 km Depth of the event in kilometers.
Place 39km SSW 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 2016-09-13 23:18:13 Time when the event occurred. UTC/GMT
Updated 2016-09-20 15:20:09 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 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 129 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, A comma-separated list of network contributors.
Number of Stations Used 28 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.2856643 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 194.399984448 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 ak13967225 Id of event.
Event Code 13967225 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13967225, A comma-separated list of event ids that are associated to an event.

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