List of earthquakes in Montana explained

This is an incomplete list of earthquakes in the U.S state of Montana. Only earthquakes with a magnitude of 6.0 or greater are listed. Aftershocks are not included, unless they were of great significance or contributed to a death toll.

Earthquakes

Ref

1959-08-18	Hebgen Lake	7.2	IX	28+		$11 million
1935-10-31	Helena	6.0	VIII	2		Aftershock.
1935-10-18	Helena	6.2	VIII	2			^[1]
1925-06-27	Townsend	6.9	IX		2	$150.000	^[2]
1897-11-04	Dillon	6.4					^[3]
Note: The inclusion criteria for adding events are based on WikiProject Earthquakes' notability guideline that was developed for stand-alone articles. The principles described also apply to lists. In summary, only damaging, injurious, or deadly events and those of scientific interest should be recorded.

See also

• List of earthquakes in the United States
• List of earthquakes in Utah
• List of earthquakes in Nevada

Notes and References

1. Web site: M 6.3 - 2 km ENE of Helena, Montana. United States Geological Survey. October 18, 1935. January 23, 2022.
2. Web site: M 6.9 – western Montana. United States Geological Survey. January 23, 2022 . June 28, 1925.
3. Web site: M 6.4 - Near Dillon, Montana. United States Geological Survey. November 4, 1897. January 23, 2022.