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Light earthquake: M4.33 quake has struck near Lincoln in Montana


Earthquake location 46.9045S, -112.5226667WA light earthquake magnitude 4.33 (ml/mb) has occurred on Tuesday, 13 kilometers (8 miles) from Lincoln in Montana. The temblor was picked up at 04:11:14 / 4:11 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 17/04/18 / 2018-04-17 11:11:14 / April 17, 2018 @ 11:11 am UTC/GMT. Exact location of event, longitude -112.5226667 West, latitude 46.9045 North, depth = 10.1 km. Event ids that are associated to the earthquake: mb80290219. Id of event: mb80290219. The epicenter of the earthquake was roughly 10.1 km (6 miles) below the earth’s surface.

Epicenter of the event was 51 km (32 miles) from Helena (c. 28 200 pop), 92 km (57 miles) from Anaconda (c. 9 400 pop), 56 km (35 miles) from Helena Valley Southeast (c. 8 200 pop), 44 km (28 miles) from Helena Valley West Central (c. 7 900 pop). Nearest cities/city/villages to epicentrum/hypocenter was Anaconda, Helena Valley Southeast, Helena (min 5000 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop).

Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days three and in the last 365 days ninety-two earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 13 km ESE of Lincoln, Montana.

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More information

Parameter Value Description
Magnitude 4.33 mb The magnitude for the event.
Longitude -112.5226667° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 46.9045° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10.1 km Depth of the event in kilometers.
Place 13km 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 2018-04-17 11:11:14 Time when the event occurred. UTC/GMT
Updated 2018-04-17 14:01:21 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 288 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 19 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.173 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.23 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 112 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 mb80290219 Id of event.
Event Code 80290219 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,mb80290219, A comma-separated list of event ids that are associated to an event.

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