Floods

• Flood records date back to at least 1899.flood defenses image by Studio Pookini from Fotolia.com
  
  Recorded natural disasters caused by flooding in Montana date back to at least 1899. Glendive and Miles City flooded because of an ice jam along the Tongue River in April 1899. Gravelly Coolee and Havre both flooded in June 1938, as did Jordan, Cohagen and Springdale. Cloudbursts brought on by storms caused the flooding in these regions.
  
  

Earthquakes

• Earthquakes have caused landslides in Montana.craquelure 2 image by Nathalie P from Fotolia.com
  
  One of the best-known earthquake events to hit Montana occurred in West Yellowstone in 1959. Sixteen people were killed in this series of earthquakes hitting the region, and an 8,000-foot mountain crumbled, causing a landslide.
  
  

Landslides

• A landslide caused part of a dam to fail in 1938.panneau image by Palindra from Fotolia.com
  
  In September 1938, a landslide caused part of a dam to fail in Fort Peck. Seven men were killed when millions of tons of dirt and rock crashed into the dam.
  
  

Tornadoes

• A tornado destroyed 10 buildings in Bainville in 1933.Twister image by Isa from Fotolia.com
  
  Bainville suffered a tornado in May 1933 that destroyed 10 buildings. Reports of a few injuries and communications breakdowns round out the damage done.