Avalanche
- Slab Width
- 14 m
- Weak Layer
- Facets
- Trigger Type
- Snowmobiler
- Vertical Fall
- 30 m
- Avalanche Type
- Soft Slab
- Slab Thickness
- 91 cm
- Trigger Detail
- Unintentionally Triggered
- Start Zone Aspect
- Northeast
- Avalanche Problem
- Persistent Weak Layer
- Start Zone Elevation
- 2896 m
Watched one, or two sledders meander all over the steeper slopes of Y Not and Outhouse in Mary Ellen Gulch. High marking without incident for the most part. Turned away to have some lunch and when I looked back there was a small slide at the apex of one of their high marks mid slope on a convexity near some scrubby trees. I assume they throttled out, but did not witness the slide and the trigger continued to rip around on even larger faces without additional activity. See Slide pictured in middle of frame. Approximate dimensions viewed from across drainage.