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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.9 mag strikes near Adak in Alaska

Earthquake location 52.4924S, -176.2453WA minor earthquake with magnitude 3.9 (ml/mb) was reported 73 km NNE of Adak, Alaska (45 miles) on Saturday. Exact time and date of event in UTC/GMT: 15/10/16 / 2016-10-15 23:40:49 / October 15, 2016 @ 11:40 pm. The earthquake occurred at a depth of 194.16 km (121 miles) below the earth’s surface. The temblor was reported at 11:40:49 / 11:40 am (local time epicenter). Exact location, longitude -176.2453° West, latitude 52.4924° North, depth = 194.16 km. All ids that are associated to the event: ak14212549, us20007g1s. Unique identifier: us20007g1s.

In the past 24 hours, there have been four, in the last 10 days ten, in the past 30 days seventeen and in the last 365 days fifty-five earthquakes of magnitude 3.0 or greater that has struck near. Every year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 73 km NNE of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 3.9 mb The magnitude for the event.
Longitude -176.2453° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.4924° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 194.16 km Depth of the event in kilometers.
Place 73km NNE of Adak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-10-15 23:40:49 Time when the event occurred. UTC/GMT
Updated 2016-11-11 05:22:28 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 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 0.415 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.97 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 148 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 us20007g1s Id of event.
Event Code 20007g1s An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak14212549,us20007g1s, A comma-separated list of event ids that are associated to an event.

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