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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.2 quake has struck near Chernabura Island in Alaska

Posted by admin on October 9, 2016 0 Comments

Earthquake location 55.1389S, -157.6858WA light earthquake magnitude 4.2 (ml/mb) strikes 126 km ENE of Chernabura Island, Alaska (78 miles) on Wednesday. The 4.2-magnitude earthquake was detected at 11:11:59 / 11:11 am (local time epicenter). Exact location of earthquake, longitude -157.6858 West, latitude 55.1389 North, depth = 35.11 km. Unique identifier: us10006rgk. Ids that are associated to the event: ak14010487, us10006rgk. Global date and time of event UTC/GMT: 21/09/16 / 2016-09-21 22:11:59 / September 21, 2016 @ 10:11 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 35.11 km (22 miles) below the earth’s surface.

In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days nine and in the last 365 days sixty earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 126 km ENE of Chernabura Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -157.6858° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 55.1389° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35.11 km Depth of the event in kilometers.
Place 126km ENE of Chernabura 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 2016-09-21 22:11:59 Time when the event occurred. UTC/GMT
Updated 2016-10-09 15:59:48 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 271 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak,us, 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 1.139 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.61 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 154 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10006rgk Id of event.
Event Code 10006rgk An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak14010487,us10006rgk, A comma-separated list of event ids that are associated to an event.

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