Quick report
- Slope Angle
- 39°
Avalanche
- Slab Width
- 1067 m
- Weak Layer
- Facets
- Trigger Type
- Natural
- Vertical Fall
- 533 m
- Avalanche Type
- Hard Slab
- Slab Thickness
- 183 cm
- Start Zone Aspect
- Northeast
- Avalanche Problem
- Persistent Weak Layer
- Start Zone Elevation
- 3109 m
This was one of the biggest avalanches I can remember on this slope, but I've only been around for 16 years in the backcountry. Bruce Tremper said today he's never seen it run that big in his 30-year career. I think this would classify as R4D4. The deepest part of the avalanche was 16 feet deep; however, the average depth across the crown line was closer to 6-8 feet deep. Impressive.
2,971 feet wide is the approximate distance of the crown line. The avalanche descended almost 1,800 vertical feet and ran a distance of 5,224 feet to where the debris stopped. We measured the alpha angle standing on the debris at 17.2°.