Observation: Guardsman Pass area

Observation Date
12/19/2020
Observer Name
Cody Hughes
Region
Salt Lake » Big Cottonwood Canyon » Guardsman Pass area
Location Name or Route
Guardsman's (PC Ridgeline)
Weather
Sky
Few
Wind Direction
West
Wind Speed
Moderate
Weather Comments
Calm at the TH at 0700. Sustained moderate wind speeds and drifting snow noted from 0900 until I left the mtns at 1600.
Snow Characteristics
New Snow Depth
13"
New Snow Density
Low
Snow Surface Conditions
Powder
Red Flags
Red Flags
Recent Avalanches
Heavy Snowfall
Wind Loading
Cracking
Collapsing
Poor Snowpack Structure
Red Flags Comments
Recent human triggered avalanches in the last 48 hours. Heavy snowfall in the last 48 hours with a bump in wind speeds overnight and during the day. Cracking and collapsing noted in our group today and poor structure in our snowpits. The mountains are talking to us, and low angle love is the name of the game.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
The problem is apparent with recent natural and human triggered avalanches and the management strategy is simple. Avoid slopes where the PWL exists. Everywhere I have dug snow pits in the last few days shows the poor structure and I am hearing reports of poor structure on some solar aspects as well. The storm initially began with higher densities and created a small 4 finger slab on top of the NSF layer. That higher density snow is just stiff enough to allow for propagation out of the wind zone. On leeward slopes and terrain features the problem is exacerbated by a more stiff slab allowing for wider and more destructive avalanches.
Avalanche Problem #2
Problem
Wind Drifted Snow
Trend
Decreasing Danger
Problem #2 Comments
Winds were sustained at moderate speeds today and blowing out of the WNW. Notable wind drifting observed throughout the day.
Video
Upper BCC
HS 80 cm
North 9500 ft
ECTP 6 - down 33 cm's
Today's Observed Danger Rating
High
Tomorrows Estimated Danger Rating
Considerable