Helena Valley Northeast, MT has a high earthquake risk, with a total of 228 earthquakes since 1931. The USGS database shows that there is a 48.26% chance of a major earthquake within 50km of Helena Valley Northeast, MT within the next 50 years. The largest earthquake within 30 miles of Helena Valley Northeast, MT was a 3.9 Magnitude in 1975.
View the probability of a major earthquake within the next 50 years in Helena Valley Northeast, MT.
View the number of earthquake incidents in Helena Valley Northeast, MT by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in Helena Valley Northeast, MT within 30 miles. All distances and depths in the table are measured in miles.