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Minor earthquake 2.86 mag, 29 km WNW of Helena West Side, Montana

Posted by admin on April 29, 2016 0 Comments

Earthquake location 46.6753333S, -112.486WA minor earthquake with magnitude 2.86 (ml/mb) was reported 29 kilometers (18 miles) from Helena West Side in Montana on Thursday. The epicenter was at a depth of 4.75 km (3 miles). Global time and date of event 29/04/16 / 2016-04-29 00:58:47 / April 29, 2016 @ 12:58 am UTC/GMT. Exact location of event, longitude -112.486 West, latitude 46.6753333 North, depth = 4.75 km. The 2.86-magnitude earthquake was detected at 18:58:47 / 6:58 pm (local time epicenter). Unique identifier: mb80142704. Ids that are associated to the event: mb80142704.

Nearest cities/city/villages to epicentrum/hypocenter was Butte, Anaconda, Helena Valley Southeast (min 5000 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). The epicenter was 75 km (46 miles) from Butte (c. 34 200 pop), 36 km (22 miles) from Helena (c. 28 200 pop), 70 km (44 miles) from Anaconda (c. 9 400 pop), 44 km (27 miles) from Helena Valley Southeast (c. 8 200 pop), 32 km (20 miles) from Helena Valley West Central (c. 7 900 pop).

Each year there are an estimated 1,300,000 minor earthquakes in the world. 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 nine earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 2.5 to 2.9 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: 29 km WNW of Helena West Side, Montana.

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More information

Parameter Value Description
Magnitude 2.86 mb The magnitude for the event.
Longitude -112.486° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 46.6753333° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 4.75 km Depth of the event in kilometers.
Place 29km WNW of Helena West Side, Montana Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-04-29 00:58:47 Time when the event occurred. UTC/GMT
Updated 2016-04-29 14:12:25 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 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 126 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network mb The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,mb, A comma-separated list of network contributors.
Number of Stations Used 36 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.13 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.22 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 64 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 mb80142704 Id of event.
Event Code 80142704 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,mb80142704, A comma-separated list of event ids that are associated to an event.

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