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Minor earthquake, 2.8 mag has occurred near Chignik Lake in Alaska



Earthquake location 57.0319S, -157.7626WA minor earthquake magnitude 2.8 (ml/mb) has struck on Saturday, 106 km NE of Chignik Lake, Alaska (66 miles). Exact time and date of earthquake 02/04/16 / 2016-04-02 20:49:08 / April 2, 2016 @ 8:49 pm UTC/GMT. Exact location of earthquake, -157.7626° West, 57.0319° North, depth 8.9 km. The 2.8-magnitude earthquake was detected at 12:49:08 / 12:49 pm (local time epicenter). Unique identifier: ak13425472. Ids that are associated to the event: ak13425472. The epicenter was at a depth of 8.9 km (6 miles).

Each year there are an estimated 1,300,000 minor quakes in the world. In the past 24 hours, there have been sixty, in the last 10 days sixty, in the past 30 days sixty-one and in the last 365 days one hundred and twelve earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 106 km NE of Chignik Lake, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -157.7626° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 57.0319° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.9 km Depth of the event in kilometers.
Place 106km NE of Chignik Lake, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-04-02 20:49:08 Time when the event occurred. UTC/GMT
Updated 2016-04-11 21:16:34 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 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 25 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 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 125.99998992 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 ak13425472 Id of event.
Event Code 13425472 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13425472, A comma-separated list of event ids that are associated to an event.

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