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Light earthquake: M4.1 quake has struck near Nikolski in Alaska

Posted by admin on September 13, 2015 0 Comments

Earthquake location 52.3962S, -169.5809WA light earthquake magnitude 4.1 (ml/mb) has struck on Saturday, 77 km SW of Nikolski, Alaska (48 miles). The earthquake was roughly at a depth of 46.03 km (29 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.1-magnitude earthquake was detected at 13:58:33 / 1:58 pm (local time epicenter). Date and time of earthquake in UTC/GMT: 13/09/15 / 2015-09-13 00:58:33 / September 13, 2015 @ 12:58 am. Exact location of earthquake, -169.5809° West, 52.3962° North, depth 46.03 km. Id of earthquake: us20003j3p. Event ids that are associated: us20003j3p.

Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days six, in the past 30 days twenty-one and in the last 365 days three hundred and twenty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel anything?

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: 77 km SW of Nikolski, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -169.5809° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.3962° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 46.03 km Depth of the event in kilometers.
Place 77km 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 2015-09-13 00:58:33 Time when the event occurred. UTC/GMT
Updated 2015-09-13 04:53:30 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 259 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 0.726 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 177 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 us20003j3p Id of event.
Event Code 20003j3p An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003j3p, A comma-separated list of event ids that are associated to an event.

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