Quick report
- Slope Angle
- 39°
Avalanche
- Slab Width
- 38 m
- Weak Layer
- Facets
- Trigger Type
- Skier
- Vertical Fall
- 213 m
- Slab Thickness
- 56 cm
- Trigger Detail
- Remotely Triggered
- Start Zone Aspect
- Northeast
- Avalanche Problem
- Persistent Weak Layer
- Start Zone Elevation
- 2926 m
Widespread collapsing and shooting cracks throughout Upper Mill D North, Upper Millcreek, and the PC Ridgeline today on surfaces that held old snow NW through E. Remotely triggered this slide (arrow) while walking the PC Ridge in Mother In Law north of Square Top. Approximately 140' wide, 18-26" deep, running ~500-700'.
Failed on small-grained facets on top of what's left of the crust that was mid-snowpack prior to the Friday/Saturday precipitation.
Along with this persistent weak layer, the strong SW winds that came on the front end of the storm created wind loading and slabs along the ridge lines. This played a sensitivity role in this avalanche's start zone.
Widespread collapsing and shooting cracks on areas that held old faceted snow.