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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.9 quake has struck near Nikolski in Alaska


Earthquake location 52.003S, -169.287WA minor earthquake magnitude 3.9 (ml/mb) has struck on Tuesday, 107 km SSW of Nikolski, Alaska (66 miles). Exact location, longitude -169.287° West, latitude 52.003° North, depth = 35.8 km. Exact time and date of earthquake 28/07/15 / 2015-07-28 22:47:09 / July 28, 2015 @ 10:47 pm UTC/GMT. The temblor was picked up at 11:47:09 / 11:47 am (local time epicenter). The earthquake occurred at a depth of 35.8 km (22 miles) below the earth’s surface. Id of earthquake: us10002xiy. Event ids that are associated: ak11661479, us10002xiy.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been ninety-seven, in the last 10 days one hundred and ninety-five, in the past 30 days one hundred and ninety-nine and in the last 365 days two hundred and seventy-nine earthquakes of magnitude 3.0 or greater that was reported nearby. Each year there are an estimated 130,000 minor quakes in the world.

How would you describe the shaking?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 107 km SSW of Nikolski, Alaska.

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More information

Parameter Value Description
Magnitude 3.9 mb The magnitude for the event.
Longitude -169.287° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.003° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35.8 km Depth of the event in kilometers.
Place 107km 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 22:47:09 Time when the event occurred. UTC/GMT
Updated 2015-08-19 05:56:58 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 234 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.04 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 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 us10002xiy Id of event.
Event Code 10002xiy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11661479,us10002xiy, A comma-separated list of event ids that are associated to an event.

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