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Light earthquake, 4 mag has occurred near Chignik Lake in Alaska

Posted by admin on October 28, 2016 0 Comments

Earthquake location 57.0913S, -157.8164WA light earthquake with magnitude 4 (ml/mb) was reported 109 km NNE of Chignik Lake, Alaska (68 miles) on Friday. Global time and date of event 28/10/16 / 2016-10-28 08:30:50 / October 28, 2016 @ 8:30 am UTC/GMT. All ids that are associated to the event: ak14281240. Unique identifier: ak14281240. The earthquake occurred at a depth of 12 km (7 miles) below the earth’s surface. Exact location, longitude -157.8164° West, latitude 57.0913° North, depth = 12 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake has occurred at 00:30:50 / 12:30 am (local time epicenter).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days four, in the past 30 days five and in the last 365 days one hundred and fourteen earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 109 km NNE of Chignik Lake, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -157.8164° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 57.0913° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 12 km Depth of the event in kilometers.
Place 109km NNE 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 2016-10-28 08:30:50 Time when the event occurred. UTC/GMT
Updated 2016-10-28 08:55:30 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 3.84 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 246 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 0.81 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 ak14281240 Id of event.
Event Code 14281240 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak14281240, A comma-separated list of event ids that are associated to an event.

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