Crown Profile. HS-NS-R3-D3. The avalanche likely occurred between the afternoon of 12/16 and the early morning of 12/17. The width of the avalanche was 1500ft, the vertical run was 2000ft, and the crown height ranged from 1-6ft. Debris was 10-20ft deep minimum. The majority of the avalanche involved recent wind deposited snow. In a rocky, 150 foot section of the crown where this crown profile was conducted, the avalanche stepped down and failed on a much deeper layer of old snow.