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Light earthquake, 4.7 mag has occurred near Atka in Alaska

Posted by admin on December 28, 2017 0 Comments

Earthquake location 52.5169S, -174.3542WA light earthquake with magnitude 4.7 (ml/mb) was detected on Thursday, 37 km NNW of Atka, Alaska (23 miles). The earthquake occurred at a depth of 178.39 km (111 miles) below the earth’s surface. Unique identifier: us1000bx6m. Ids that are associated to the event: at00p1oexu, us1000bx6m. A tsunami warning has been issued near Atka in Alaska (Does not indicate if a tsunami actually did or will exist). The 4.7-magnitude earthquake was detected at 04:58:42 / 4:58 am (local time epicenter). Date and time of earthquake in UTC/GMT: 28/12/17 / 2017-12-28 14:58:42 / December 28, 2017 @ 2:58 pm. Exact location, longitude -174.3542° West, latitude 52.5169° North, depth = 178.39 km.

There are an estimated 13,000 light earthquakes in the world each year. 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 five, in the past 30 days eleven and in the last 365 days one hundred and ten earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel it?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 37 km NNW of Atka, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -174.3542° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.5169° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 178.39 km Depth of the event in kilometers.
Place 37km NNW 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 2017-12-28 14:58:42 Time when the event occurred. UTC/GMT
Updated 2017-12-28 15:20:57 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 1 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 ,at,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 0.33 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.92 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 84 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 us1000bx6m Id of event.
Event Code 1000bx6m An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00p1oexu,us1000bx6m, A comma-separated list of event ids that are associated to an event.

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