From e-mail on 4/11/19: "We found reactive storm slabs and touchy windslabs near ridgelines. We kicked off a small windslab in 4th of July from the top of the couloir. Attached is a photo of the crown to give you a depth perspective. It was about 6 feet across and 3-4 inches deep."
Number of slides
Soft slab avalanche
c-A controlled or intentional release by the indicated trigger
S - Avalanche released within new snow
Slab Thickness units
Single / Multiple / Red Flag