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Observation: Bear Trap

Observation Date
12/5/2022
Observer Name
Hardesty, Weber, Little
Region
Salt Lake » Big Cottonwood Canyon » Bear Trap
Location Name or Route
Beartrap
Weather
Sky
Obscured
Precipitation
Moderate Snowfall
Snow Characteristics
New Snow Depth
8"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments
5 star powder all aspects and elevations
Red Flags
Red Flags
Poor Snowpack Structure
Red Flags Comments
We only experienced localized cracking and collapsing on polar aspects.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
Wondering if things may be getting more dangerous. Not unstable, mind you, but more dangerous insofar that a slow stabilization may have the tendency to pull people out onto suspect slopes. We had anticipated experiencing more cracking and collapsing with the high likelihood of remote triggering along the Lake Deso - West Deso ridgeline BUT it may be that the hard slabs are more stubborn, that slopes have already run, and/or that slopes had already collapsed and gained strength. Despite these (lack of) signs, we stayed low angle and kept it conservative.
The PWL exists on all aspects and elevations. The slopes with the greatest loading (North>East) have been the most suspect. South and southwest aspects have seen minimal loading and in many cases have been stripped of a great deal of snow during wind events. Still, a poor snowpack structure exists on these "off" aspects and collapsing and cracking have been noted on these aspects; the danger is lower than their polar counterparts. A recent Heat Map of activity tells the story of avalanches in regard to aspect and elevation.
On a south facing aspects at 9200' in Beartrap, one can find 60 cm of snow with half being new powder snow sitting above an amalgamation of crusts and facets. See the distinct coloring below. ECTX.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates