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Light earthquake, 4 mag has occurred near Nikolski in Alaska

Posted by admin on July 28, 2015 0 Comments

Earthquake location 51.9903S, -169.2697WA light earthquake with magnitude 4 (ml/mb) was detected on Tuesday, 108 km SSW of Nikolski, Alaska (67 miles). The temblor was reported at 09:49:14 / 9:49 am (local time epicenter). Exact location of event, depth 27.92 km, -169.2697° West, 51.9903° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us20003115. Ids that are associated to the earthquake: us20003115. The earthquake occurred at a depth of 27.92 km (17 miles). Exact time and date of event in UTC/GMT: 28/07/15 / 2015-07-28 20:49:14 / July 28, 2015 @ 8:49 pm.

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

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. 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: 108 km SSW of Nikolski, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -169.2697° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.9903° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 27.92 km Depth of the event in kilometers.
Place 108km SSW 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 2015-07-28 20:49:14 Time when the event occurred. UTC/GMT
Updated 2015-07-28 22:15:12 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 246 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 1.015 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.61 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 us20003115 Id of event.
Event Code 20003115 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20003115, A comma-separated list of event ids that are associated to an event.

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