Quick report
- Slope Angle
- 33°
Avalanche
- Slab Width
- 76 m
- Weak Layer
- Depth Hoar
- Trigger Type
- Snowmobiler
- Vertical Fall
- 18 m
- Avalanche Type
- Hard Slab
- Slab Thickness
- 122 cm
- Trigger Detail
- Remotely Triggered
- Start Zone Aspect
- East
- Avalanche Problem
- Wind Slab
- Start Zone Elevation
- 2316 m
The noise/vibration from my snowmobile triggered the avalanche about 100 feet from me. There still remains a crack in the snow from the 4 foot slab slide towards my snowmobile, suggesting more snow is yet to come down. There have been high winds near the summit of Logan Canyon the last couple of days, and this cornice looked like a large wind blown cornice consisting of soft snow where the top of the ridge just above the cornice hardly had any snow. This avalanche is about 200 feet from Highway 89 in Logan Canyon and visible from the Bear Lake overlook visitor center (it's just across the street).
On 2-10-2021, I (toby) examined the avalanche. Stability tests on an adjacent slope showed unstable snow conditions. There sure are lots of similar slopes in the area, which are suspect. This one ran onto a very low angled slope and stopped, but there are numerous drifted slopes nearby with longer runs of sustained 30 degree steepness...