Karl Birkeland, 51, is a longtime avalanche forecaster and director of the U.S. Forest Service National Avalanche Center in Bozeman, Montana. Here’s an excerpt from our conversation on 20 years of education, safety and snow science.
Mountain Skills: Cutting a Cornice
Dropping a cornice onto a slope can be an effective way to see if it will slide, simulating the weight of a skier on the snow. Here’s a video demonstration of proper cornice cutting technique.
Mountain Skills: Ski Cutting a Slope
By skiing quickly across a slope you can test stability without hanging yourself too far out there. Here’s a video that demonstrates proper ski-cutting technique.