Size is based on the destructive potential of avalanches. SMALL avalanches are relatively harmless to people unless they push you into a terrain trap. small

LARGE avalanches could bury, injure or kill a person.


VERY LARGE avalanches could bury cars, destroy a house, or break trees.


HISTORIC avalanches are even more destructive, and nearing the maximum size the slope could produce.

Historic Avalanche