Date of Observation: 12/12/2016
Name: Evan Ross
Avalanches: 2nd hand information. Snowmobiler triggered, was caught and buried by a persistent slab avalanche. They were rescued by the rest of their party, and did not sustain any injuries.
Average slope angle across the bed surface was 39 degrees. Crown was about 175ft wide and 3ft deep. Persistent slab failed at the ground on 2mm faceted grains, 4f- hard.