Avalanche
- Slab Width
- 137 m
- Weak Layer
- Facets
- Trigger Type
- Snowmobiler
- Vertical Fall
- 76 m
- Avalanche Type
- Soft Slab
- Slab Thickness
- 46 cm
- Trigger Detail
- Unintentionally Triggered
- Start Zone Aspect
- East
- Avalanche Problem
- Persistent Weak Layer
- Start Zone Elevation
- 2926 m
This avalanche was remotely triggered by a snowmobiler sidehilling through the trees low on the slope.
I had dug a snowpit about 50 feet from the crown line the day before.
It failed on a crust with facets on top of it that was buried the night before Valentine's day.
Photo 1 - layers at the crown showing the ice crust with small facets just above the crust where the avalanche failed
Photo 2 - overview photo with red line showing the approx location of the crown face
Photo 3 - close up view of the small facets