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Minor earthquake, 2.8 mag was detected near Boulder in Montana

Earthquake location 46.257S, -112.0499WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Friday, 5 kilometers (3 miles) from Boulder in Montana. Exact time and date of earthquake 18/04/20 / 2020-04-18 01:00:19 / April 18, 2020 @ 1:00 am UTC/GMT. The temblor was detected at 18:00:19 / 6:00 pm (local time epicenter). Exact location of earthquake, longitude -112.0499 West, latitude 46.257 North, depth = 10 km. All ids that are associated to the event: us70008z1g. Unique identifier: us70008z1g. The epicenter was at a depth of 10 km (6 miles).

Epicenter of the earthquake was 47 km (29 miles) from Butte (c. 34 200 pop), 61 km (38 miles) from Butte-Silver Bow (Balance) (c. 33 500 pop), 37 km (23 miles) from Helena (c. 28 200 pop), 70 km (44 miles) from Anaconda (c. 9 400 pop), 41 km (25 miles) from Helena Valley Southeast (c. 8 200 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Anaconda, Butte-Silver Bow (Balance), Butte. Nearby country/countries that might be effected, United States (c. 310 233 000 pop).

In the past 24 hours, there have been 0, in the last 10 days 0, in the past 30 days 0 and in the last 365 days twenty-three earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. Each year there are an estimated 1,300,000 minor quakes in the world.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 5 km ENE of Boulder, Montana. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -112.0499° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 46.257° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 5km ENE of Boulder, Montana Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-04-18 01:00:19 Time when the event occurred. UTC/GMT
Updated 2020-04-18 01:11:44 Time when the event was most recently updated. UTC/GMT
Timezone offset -420 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 121 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 0.478 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.56 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 78 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 us70008z1g Id of event.
Event Code 70008z1g An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70008z1g, A comma-separated list of event ids that are associated to an event.

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