Minor earthquake, 2.9 mag strikes near Helena Valley Northeast in Montana

A minor earthquake with magnitude 2.9 (ml/mb) was detected on Wednesday, 27 kilometers (17 miles) from Helena Valley Northeast in Montana. The 2.9-magnitude earthquake has occurred at 14:18:59 / 2:18 pm (local time epicenter). Exact location of event, longitude -111.6003 West, latitude 46.7407 North, depth = 10 km. Global date and time of event UTC/GMT: 01/01/25 / 2025-01-01 14:18:59 / January 1, 2025 @ 2:18 pm. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. All ids that are associated to the event: mb90069928, us6000pgvl. Unique identifier: us6000pgvl.

Nearest cities/city/towns to hypocenter/epicentrum was Helena, Helena Valley West Central, Helena Valley Southeast (min 5000 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop). The epicenter was 37 km (23 miles) from Helena (c. 28 200 pop), 28 km (18 miles) from Helena Valley Southeast (c. 8 200 pop), 36 km (22 miles) from Helena Valley West Central (c. 7 900 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days two earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world.

Questions or comments?

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: 27 km E of Helena Valley Northeast, Montana.

More information

Parameter	Value	Description
Magnitude	2.9 mb	The magnitude for the event.
Longitude	-111.6003° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	46.7407° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	27 km E of Helena Valley Northeast, Montana	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-01-01 14:18:59	Time when the event occurred. UTC/GMT
Updated	2025-01-08 14:20:13	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	10	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	131	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	69	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	0.65 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	46	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	us6000pgvl	Id of event.
Event Code	6000pgvl	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,mb90069928,us6000pgvl,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 2.9 mag strikes near Helena Valley Northeast in Montana

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