Which have been the bigest

Avalanche made in the world, where and when?
Paul Weinstock

1. Huascaran avalanche. South America, 1962 and 1970.
2. Montroc avalanche. Chamonix, 1999.
3. Cordova avalanche. Alaska, 2000.
4. Allalin avalanche. Switzerland 1965.
5. Alpine Meadows. California 1982.

Those are some avalanches. Useful facts here:

http://library.thinkquest.org/C00360...estudies.shtml