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Minor earthquake: M2.8 quake has struck near Nikiski in Alaska



Earthquake location 61.2549S, -151.6152WA minor earthquake magnitude 2.8 (ml/mb) has struck on Saturday, 65 km NNW of Nikiski, Alaska (40 miles). The earthquake was roughly at a depth of 74.7 km (46 miles). Exact time and date of earthquake 12/08/17 / 2017-08-12 23:06:31 / August 12, 2017 @ 11:06 pm UTC/GMT. Unique identifier: ak16508412. Ids that are associated to the event: ak16508412. Exact location of event, longitude -151.6152 West, latitude 61.2549 North, depth = 74.7 km. The temblor was detected at 14:06:31 / 2:06 pm (local time epicenter).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor quakes 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 four and in the last 365 days sixty-eight earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 65 km NNW of Nikiski, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -151.6152° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.2549° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 74.7 km Depth of the event in kilometers.
Place 65km NNW of Nikiski, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-08-12 23:06:31 Time when the event occurred. UTC/GMT
Updated 2017-08-12 23:11:08 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 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 automatic 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 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 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 0.57 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 ak16508412 Id of event.
Event Code 16508412 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16508412, A comma-separated list of event ids that are associated to an event.

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