About that Idaho avalanche...they have 3 bodies now. Ski area crews had worked up there that morning and set charges to start slides. It didn't do enough. They let skiers on the runs thinking it was safe. There were 2 and possibly 3 slides later that day and 7 skiers on the hill. This link is about how 1 skier was rescued. Pretty scary.
AVALANCHESThis was on a developed ski hill. Predicting an avalanche in the back country can be pretty tricky and sometimes very risky.