Size Description Typical Length 2 Could bury, injure, or kill a person 100 meters 3 Could bury a car, destroy a small building, or break trees 1000 meters 4 Could destroy a rail cars 2000 meters 5 Largest known 3000 meters
"An avalanche is one of the most powerful events in nature. A fractured mass of snow may flow down a slope or become airborne. In a cascading manner which builds energy as it flows downhill. An avalanche starts when a layer in the snowpack becomes overloaded and fails. The two typical ingredients are: (1) a pre-existing weak layer, and (2) a trigger...
The human body is three times denser than avalanche debris and will sink quickly."