Light earthquake, 4.28 mag strikes near Lincoln in Montana

A light earthquake with magnitude 4.28 (ml/mb) was detected on Thursday, 9 kilometers (6 miles) from Lincoln in Montana. The epicenter was at a depth of 15.74 km (10 miles). The temblor was reported at 08:27:58 / 8:27 am (local time epicenter). Exact location of event, longitude -112.5161667 West, latitude 46.9245 North, depth = 15.74 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 06/07/17 / 2017-07-06 15:27:58 / July 6, 2017 @ 3:27 pm. Unique identifier: mb80224574. Ids that are associated to the event: us100097bs, mb80224574.

Epicenter of the earthquake was 52 km (32 miles) from Helena (c. 28 200 pop), 57 km (35 miles) from Helena Valley Southeast (c. 8 200 pop), 45 km (28 miles) from Helena Valley West Central (c. 7 900 pop). Closest city/cities/towns to epicentrum/hypocenter was Helena Valley Southeast, Helena, Helena Valley West Central (min 5000 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been nineteen, in the last 10 days nineteen, in the past 30 days nineteen and in the last 365 days twenty-six earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 13,000 light earthquakes in the world each year.

Questions or comments?

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. 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: 9 km SE of Lincoln, Montana.

More information

Parameter	Value	Description
Magnitude	4.28 mb	The magnitude for the event.
Longitude	-112.5161667° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	46.9245° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	15.74 km	Depth of the event in kilometers.
Place	9km SE 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	2017-07-06 15:27:58	Time when the event occurred. UTC/GMT
Updated	2017-07-07 15:56:12	Time when the event was most recently updated. UTC/GMT
Timezone offset	-420	Timezone offset from UTC in minutes at the event epicenter.
Felt	120	The total number of felt reports
CDI	4.1	The maximum reported intensity for the event.
MMI	3.59	The maximum estimated instrumental intensity for the event.
Alert Level	green	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	331	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	,us,mb,	A comma-separated list of network contributors.
Number of Stations Used	49	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.162	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.31 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	58	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	mb80224574	Id of event.
Event Code	80224574	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us100097bs,mb80224574,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.28 mag strikes near Lincoln in Montana

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