Observation: Broads Fork

Observation Date
2/20/2021
Observer Name
Meisenheimer / Coyne
Region
Salt Lake » Big Cottonwood Canyon » Broads Fork
Location Name or Route
Broads Fork
Weather
Sky
Scattered
Precipitation
Light Snowfall
Wind Speed
Calm
Weather Comments
Light snowfall warm temps. Sun at times.
Snow Characteristics
Snow Surface Conditions
Powder
Dense Loose
Faceted Loose
Rain-Rime Crust
Damp
Snow Characteristics Comments
Warm conditions at this elevation (8200')
Red Flags
Red Flags
Recent Avalanches
Heavy Snowfall
Poor Snowpack Structure
Red Flags Comments
Basically, we have a 100 cm slab sitting over a very weak 30 cm layer of weak snow on the ground.
Avalanche Problem #1
Problem
Persistent Weak Layer
Problem #1 Comments
I turned my attention to the periphery today with hopes of looking at the structure in our outlying zones. I suspected that we would continue with a poor snowpack in zones outside of the Upper Cottonwoods, and today's field day confirmed my suspicions. It's pretty simple structure with strong snow over weak snow. Except back here, the snowpack is basically 100-140 cm deep, and I guess that humans can still affect the weak snow on the ground.
We are transitioning to a deeper snowpack in the upper canyon with the slab being 120-200 cm deep. The likelihood of a human triggering this avalanche is lowering every day. However, in places where the snowpack is shallower (Mineral, Mill B, Storm Mtn, Millcreek, PC Ridge, etc.) We can easily affect this layer by riding on it.
Personally, I am not ready to trust any steep slope in the Wasatch Range, but we are getting to a turning point in the deep zones. Maybe in time, we can trust this terrain. For now, it's still off the table for me.
Snow Profile
Aspect
North
Elevation
8,200'
Slope Angle
27°
Video
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable