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Light earthquake: M4.7 quake has struck near Atka in Alaska

Posted by admin on September 5, 2015 0 Comments

Earthquake location 51.5527S, -174.6165WA light earthquake magnitude 4.7 (ml/mb) has struck on Friday, 77 km SSW of Atka, Alaska (48 miles). Unique identifier: us20003gll. Ids that are associated to the event: us20003gll, ak11692564. The temblor was picked up at 19:20:03 / 7:20 pm (local time epicenter). Exact location of event, depth 41.72 km, -174.6165° West, 51.5527° North. Exact time and date of event in UTC/GMT: 05/09/15 / 2015-09-05 07:20:03 / September 5, 2015 @ 7:20 am. 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 41.72 km (26 miles) below the earth’s surface.

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

Did you feel the quake?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 77 km SSW of Atka, Alaska.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -174.6165° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.5527° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 41.72 km Depth of the event in kilometers.
Place 77km SSW 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 2015-09-05 07:20:03 Time when the event occurred. UTC/GMT
Updated 2015-09-05 07:39:22 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 2.61 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 340 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,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 0.699 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.95 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 147 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 us20003gll Id of event.
Event Code 20003gll An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003gll,ak11692564, A comma-separated list of event ids that are associated to an event.

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