Helena Valley Northwest, MT has a high earthquake risk, with a total of 434 earthquakes since 1931. The USGS database shows that there is a 45.65% chance of a major earthquake within 50km of Helena Valley Northwest, MT within the next 50 years. The largest earthquake within 30 miles of Helena Valley Northwest, MT was a 5.8 Magnitude in 2017.
View the probability of a major earthquake within the next 50 years in Helena Valley Northwest, MT.
View the number of earthquake incidents in Helena Valley Northwest, MT by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in Helena Valley Northwest, MT within 30 miles. All distances and depths in the table are measured in miles.