| Trigger | Snowmachiner | Remote Trigger | Unknown |
| Avalanche Type | Soft Slab | Aspect | Southeast |
| Elevation | 2400ft | Slope Angle | unknown |
| Crown Depth | 24in | Width | 300ft |
| Vertical Run | 100ft |
Avalanche: Turnagain
Location: Main Bowl, Turnagain Pass
Standard moto uptrack to Main Bowl.
Avalanche Details
Three snowmachine triggered avalanche in Main Bowl today. I investigated one and found the Solstice BSH was weak layer, about 60cm down. Confident this was also the weak layer in the other two avalanches.
At least two of three slopes that avalanched had multiple tracks prior to avalanche.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | No |
Observer Comments
Recent avalanches.
Weather
Calm winds. Single digit temps and high clouds.
Snow surface
12-20” low density snow from NYE storm.
Snowpack
Melt freeze crust from early in NYE storm is present below about 2200’. It disappears in the 2200-2300’ elevation band.
No formal stability tests but all three avalanches failed on buried surface hoar 50-60cm down.
Main Bowl, East aspect ~2400’. Snowmachine triggered this morning. Possibly remote triggered. Photo: Travis Smith
Main Bowl, SE aspect ~2250’. Snowmachine triggered, D1.
Looking at weak layer from the above avalanche. Solstice buried surface hoar was the culprit.
Main Bowl, SE Aspect. ~2300’. Snowmachine triggered, ~300’ wide. Debris 10-15’ deep.
Parking lot scene on opening day, Turnagain Pass.