This video explains why the the PST was developed, shows two demonstrations of the propagation saw test, explains the usual interpretation of test results, and shows how it performed next to real avalanches and whumpfs over four winters.
3/11/2010, Skiing the Hypodermic Needle in the Wasatch range. This is one of the best runs in the state of utah. It includes a 50 degree couloir that dumps into a massive apron. A total descent of 5000 vertical feet from peak to creek. We were lucky enough to hit it in all time powder conditions.
Just like that, another sure to be classic winter in the Wasatch has begun. And boy did it start off nicely. All it took was one storm cycle to put down a blanket of snow so deep that it allowed us to go wherever we chose. I took a tour with Jim Harris to the summit of Mt. Superior, while Neil stepped on a snurf board for the first time since his bad accident in the spring where he broke his legs.
check out these links to see photos from the trip: