Quick report
- Slope Angle
- 37°
Avalanche
- Slab Width
- 122 m
- Weak Layer
- Facets
- Trigger Type
- Snowmobiler
- Vertical Fall
- 183 m
- Avalanche Type
- Hard Slab
- Slab Thickness
- 91 cm
- Start Zone Aspect
- Northeast
- Avalanche Problem
- Persistent Weak Layer
- Start Zone Elevation
- 3261 m
Checked out this sled triggered slide in the Humpy Basin area. Even though the terrain was broken into small sub ridges this slide propagated around a few corners and was quite connected. It was possibly triggered somewhere lower on the slope.
The lookers right flank of the slide was around 3' deep, while up near the ridge line the crown was closer to 5-6' deep. This hard slab avalanche failed on sugary faceted snow that formed earlier in the month. This area as seen from some of the photos is a steep, cold, shady northeast aspect with weak sugary faceted snow and a dense hard slab sitting on top. All it takes is a person to find the shallow weak spot, collapse the slope releasing a scary avalanche. Glad to hear no one was caught in this one.