Avalanches may release spontaneously on some steep slopes. Avalanches can get large enough to bury or even kill you (size 2).
You can easily trigger avalanches on many steep slopes. Avalanches can get large enough to bury or even kill you (size 2).
Avalanches may release spontaneously on a few steep slopes. Avalanches can get large enough to bury a car or destroy a small house (size 3). Remote triggering is possible.