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Avalanche: Park City Ridgeline

Observer Name
James May
Observation Date
Tuesday, January 5, 2021
Avalanche Date
Tuesday, January 5, 2021
Region
Salt Lake » Park City Ridgeline
Location Name or Route
Movie Line
Elevation
9,400'
Aspect
Northeast
Trigger
Skier
Depth
10"
Width
45'
Comments
I was part of an experienced group of three backcountry skiers. We proceeded out the gate on top of Peak 9990 above Park City Mountain Resort and skinned up the back of Conehead. We didn't feel comfortable skiing the terrain off Conehead given current avalanche conditions (fresh snow, windloading), so we proceeded down ridge (South) towards our intended run, Movie Line, which is lower angle and has a more NE aspect, rather than E. We skied one run in Movie Line with no avalanche issues, but were surprised when we got back to the 9990 lift that it appeared a small pocket had ripped out in Hanky Panky, a spot just north of Movie Line. We proceeded back up the lift, up the skin track, and over to Movie Line again. We elected to ski Movie Line again rather than several untracked options further north (near Hanky Panky) because of the recent small avalanche. Upon the first skier entering movie line, the other members of the party noticed a loud whomping sound and seemingly dozens of micro cracks shooting across the terrain. The slope held, and the remaining skiers selected a safer line just to the South. Halfway down Movie Line, where the slope rolls over a little into steeper terrain, the first skier triggered a small (10" deep, 50' wide) avalanche and skied out of it without knowing about it. The snow didn't move very far, but we were able to observe a clear crown and thin snowpack in the bed surface.
Overall, all skiers felt comfortable in the situation and considered more of a "terrain management" exercize than a dangerous situation. The alarming thing to us, however, was just how rare it was to all of us to observe even small avalanche activity in this area of Dutches Draw. In my experience skiing this terrain for the last 15 years, I don't believe I have seen any avalanche activity in Movie Line, other than the bottom rollover section. Seeing one slide in Hanky Panky and another near avalanche at the top of Movie Line tells me that we have an unusually weak and shallow snowpack.
Coordinates