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Minor earthquake, 2.9 mag has occurred near Semisopochnoi Island in Alaska


Earthquake location 51.4266S, 179.4615WA minor earthquake with magnitude 2.9 (ml/mb) was detected on Thursday, 59 km S of Semisopochnoi Island, Alaska (37 miles). Exact time and date of event in UTC/GMT: 18/02/16 / 2016-02-18 10:41:23 / February 18, 2016 @ 10:41 am. Id of earthquake: ak12939473. Event ids that are associated: ak12939473. Exact location of event, longitude 179.4615 East, latitude 51.4266 North, depth = 52.9 km. The earthquake was roughly at a depth of 52.9 km (33 miles). The 2.9-magnitude earthquake has occurred at 00:41:23 / 12:41 am (local time epicenter).

In the past 24 hours, there have been 0, in the last 10 days four, in the past 30 days eight and in the last 365 days one hundred and twenty-seven earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor earthquakes in the world.

Questions or comments?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 59 km S of Semisopochnoi Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude 179.4615° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.4266° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 52.9 km Depth of the event in kilometers.
Place 59km S of Semisopochnoi Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-02-18 10:41:23 Time when the event occurred. UTC/GMT
Updated 2016-03-02 01:21:20 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 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 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 0.82 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 ak12939473 Id of event.
Event Code 12939473 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak12939473, A comma-separated list of event ids that are associated to an event.

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