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Light earthquake 4.2 mag, 50 km E of Semisopochnoi Island, Alaska

Posted by admin on January 6, 2018 0 Comments

Earthquake location 51.8762S, -179.6805WA light earthquake with magnitude 4.2 (ml/mb) was detected on Friday, 50 km E of Semisopochnoi Island, Alaska (31 miles). The 4.2-magnitude earthquake has occurred at 17:03:59 / 5:03 pm (local time epicenter). The epicenter of the earthquake was roughly 126.49 km (79 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us1000c1d8. Ids that are associated to the event: us1000c1d8. Date and time of earthquake in UTC/GMT: 06/01/18 / 2018-01-06 05:03:59 / January 6, 2018 @ 5:03 am. Exact location of earthquake, longitude -179.6805 West, latitude 51.8762 North, depth = 126.49 km.

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

Did you feel it?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 50 km E of Semisopochnoi Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -179.6805° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.8762° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 126.49 km Depth of the event in kilometers.
Place 50km E of Semisopochnoi 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 2018-01-06 05:03:59 Time when the event occurred. UTC/GMT
Updated 2018-01-06 06:13:07 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 ,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 0.808 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.79 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 132 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 us1000c1d8 Id of event.
Event Code 1000c1d8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000c1d8, A comma-separated list of event ids that are associated to an event.

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