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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag has occurred near Nikolski in Alaska

Earthquake location 52.4257S, -169.558WA light earthquake magnitude 4.3 (ml/mb) strikes 73 km SW of Nikolski, Alaska (45 miles) on Thursday. Exact location of earthquake, longitude -169.558 West, latitude 52.4257 North, depth = 47.84 km. The 4.3-magnitude earthquake has occurred at 09:38:20 / 9:38 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us10004dj8. Ids that are associated to the event: ak12445515, us10004dj8. Exact time and date of event in UTC/GMT: 07/01/16 / 2016-01-07 20:38:20 / January 7, 2016 @ 8:38 pm. The earthquake occurred at a depth of 47.84 km (30 miles) below the earth’s surface.

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

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 73 km SW of Nikolski, Alaska.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -169.558° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.4257° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 47.84 km Depth of the event in kilometers.
Place 73km SW of Nikolski, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-01-07 20:38:20 Time when the event occurred. UTC/GMT
Updated 2016-02-03 21:41:56 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 284 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 0.375 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 143 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 us10004dj8 Id of event.
Event Code 10004dj8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak12445515,us10004dj8, A comma-separated list of event ids that are associated to an event.

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