The Big Sky and YC Ski Patrols triggered numerous avalanches during control work. Most slides were fresh wind slabs created by the 4-6" of new snow and strong winds. Most stayed confined to the upper layers of the snowpack, but one slide at the YC broke on facets near the ground. This slide broke 2-3' deep and ran nearly full path.
NORTHERN MADISON RANGE
Soft slab avalanche
An explosive detonated above the snow surface (air blast)
c-A controlled or intentional release by the indicated trigger
O - Old snow
Slab Thickness units