Avalanche
- Slab Width
- 107 m
- Weak Layer
- New Snow/Old Snow Interface
- Vertical Fall
- 213 m
- Avalanche Type
- Hard Slab
- Slab Thickness
- 61 cm
- Start Zone Aspect
- Northeast
- Avalanche Problem
- Wind Slab
- Start Zone Elevation
- 2835 m
Slide on NE face, western side of West Porter Fork headwall. Upper crown is visible just left of center. This is at least two days old, reported to our party by friends as being present on 2/19.
Debris ran approximately 700 vertical feet into lower angle terrain, crossing the up track and a commonly used transition area.