How They Happen In heavy storms, rain water soaks into the ground faster than it can run off.
Water pressure loosens soil and rocks, causing particles to build up and form a dam.
When soil and rocks break loose, they become a mass of wet earth that can destroy anything in its path. If you observe the following after heavy rains, prepare for the worst. What To Do Call your local police, fire or public works department right away and inform your neighbors. Then move quickly to a safe place.