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

Posted by admin on July 5, 2015 0 Comments

Earthquake location 51.526S, -173.969WA light earthquake with magnitude 4.2 (ml/mb) was reported 76 km SSE of Atka, Alaska (47 miles) on Sunday. Exact location of earthquake, longitude -173.969 West, latitude 51.526 North, depth = 42.4 km. The epicenter was at a depth of 42.4 km (26 miles). The 4.2-magnitude earthquake has occurred at 06:56:47 / 6:56 am (local time epicenter). Event id: us10002njl. Ids that are associated to the earthquake: us10002njl. Global date and time of event UTC/GMT: 05/07/15 / 2015-07-05 18:56:47 / July 5, 2015 @ 6:56 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days five and in the last 365 days one hundred and two earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 13,000 light earthquakes in the world each year.

How would you describe the shaking?

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 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: 76 km SSE of Atka, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -173.969° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.526° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 42.4 km Depth of the event in kilometers.
Place 76km SSE of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-07-05 18:56:47 Time when the event occurred. UTC/GMT
Updated 2015-07-05 19:36:03 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 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 ,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 0.691 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.93 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 182 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 us10002njl Id of event.
Event Code 10002njl An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10002njl, A comma-separated list of event ids that are associated to an event.

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