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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.1 mag has occurred near Lincoln in Montana

Earthquake location 46.9242S, -112.5424WA minor earthquake magnitude 3.1 (ml/mb) has occurred on Saturday, 11 kilometers (7 miles) from Lincoln in Montana. The 3.1-magnitude earthquake has occurred at 14:10:00 / 2:10 pm (local time epicenter). Exact location, longitude -112.5424° West, latitude 46.9242° North, depth = 15.74 km. Exact time and date of earthquake 21/10/17 / 2017-10-21 21:10:00 / October 21, 2017 @ 9:10 pm UTC/GMT. The earthquake was roughly at a depth of 15.74 km (10 miles). Event ids that are associated to the earthquake: mb80264469, us1000aw3v. Id of event: us1000aw3v.

Event epicenter was 53 km (33 miles) from Helena (c. 28 200 pop), 58 km (36 miles) from Helena Valley Southeast (c. 8 200 pop), 47 km (29 miles) from Helena Valley West Central (c. 7 900 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Helena Valley Southeast, Helena, Helena Valley West Central. Close country/countries that might be effected, United States (c. 310 233 000 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been three, in the last 10 days seven, in the past 30 days eleven and in the last 365 days eighty earthquakes of magnitude 3.0 or greater that have been detected nearby.

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. 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: 11 km ESE of Lincoln, Montana.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -112.5424° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 46.9242° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 15.74 km Depth of the event in kilometers.
Place 11km ESE of Lincoln, Montana Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-21 21:10:00 Time when the event occurred. UTC/GMT
Updated 2017-11-10 03:36:24 Time when the event was most recently updated. UTC/GMT
Timezone offset -420 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2 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 148 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 ,mb,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 0.083 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.47 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 140 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000aw3v Id of event.
Event Code 1000aw3v An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,mb80264469,us1000aw3v, A comma-separated list of event ids that are associated to an event.

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