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Observation: Cardiac Ridge

Observation Date
2/27/2022
Observer Name
Brett Carroll
Region
Salt Lake » Big Cottonwood Canyon » Cardiff Fork » Cardiac Ridge
Location Name or Route
Cardiac Ridge
Red Flags
Red Flags
Recent Avalanches
Poor Snowpack Structure
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
From what I've seen the past few days I would describe conditions right now as generally stable, but still requiring heads up snowpack assessment. Today I toured from Alta up to Cardiff Pass, made some laps in the Cardiac Ridge area, then skied out to the road in Big Cottonwood. For the most part I found 8-12" of powder (fist hard) on top of highly variable snow (facets, wind and sun crusts of varying thickness). In these areas it seemed that the 8-12" of powder was not cohesive enough to produce slab avalances. The one exception that I found today was nearing the top of a skin track under some cliffs on Cardiac Ridge (east facing slope, 10,300') where I suddenly found about 2' of four finger-hard snow (likely deeper due to wind loading) on top of a thin layer of facets that sat on windboard. A quick hand sheer produced a clean break on that facet layer with a moderate amount of force. I was in avalanche terrain so I didn't investigate further, but rather took a few steps back to an area with a more stable snowpack structure. I think that if I had poked around in that wind slab, it's fairly likely that I could have triggered an avalanche. I would describe the current persistent slab problem as isolated in distribution but potentially touchy in their sensitivity, and capable of producing avalanches up to D1.5.
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate
Coordinates