| Trigger | Snowmachiner | Remote Trigger | 0 |
| Avalanche Type | Soft Slab | Aspect | Northwest |
| Elevation | unknown | Slope Angle | unknown |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | unknown |
Avalanche: Hatcher Pass
Location: Hatch Peak
Skied some north facing aspects with dry snow.
Avalanche Details
Us 4 skiers didn't trigger or observe anything from where we were on Hatch Peak.
Upon return to the car, there was a party of snowmobilers who were waiting for friends to get dig out a backpack which was buried in an avy. They said the slope had been rode about 8 times already. They switched to riding an adjacent slope, and a combination of the rider snowmachining and a cornice falling triggered a large slide on the old slope. The slide ran far, into the area where they were hanging out and watching from. In sledding away from the incoming slide, a backpack they left was buried. Around Hidden Bowl apparently.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | No |
Observer Comments
Snowmachine triggered avalanche
Weather
Below freezing, on/off light to moderate winds, mostly cloudy.
Snow surface
Heavy frozen mush at the car, drying with elevation.