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Minor earthquake, 2.9 mag strikes near Amatignak Island in Alaska


Earthquake location 51.2704S, 179.8736WA minor earthquake magnitude 2.9 (ml/mb) has struck on Friday, 71 km W of Amatignak Island, Alaska (44 miles). Unique identifier: ak18736662. Ids that are associated to the event: ak18736662. Exact location of earthquake, longitude 179.8736 East, latitude 51.2704 North, depth = 42.8 km. The earthquake occurred at a depth of 42.8 km (27 miles). Global time and date of event 23/03/18 / 2018-03-23 09:39:51 / March 23, 2018 @ 9:39 am UTC/GMT. The 2.9-magnitude earthquake was detected at 21:39:51 / 9:39 pm (local time epicenter).

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

Questions or comments?

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: 71 km W of Amatignak Island, Alaska.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude 179.8736° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.2704° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 42.8 km Depth of the event in kilometers.
Place 71km W of Amatignak 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 2018-03-23 09:39:51 Time when the event occurred. UTC/GMT
Updated 2018-03-23 16:13:28 Time when the event was most recently updated. UTC/GMT
Timezone offset 720 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 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 ak18736662 Id of event.
Event Code 18736662 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18736662, A comma-separated list of event ids that are associated to an event.

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