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Observation: Grandview Peak

Observation Date
12/17/2022
Observer Name
Staples
Region
Session Mountains » Salt Lake » Grandview Peak
Location Name or Route
Grandview Peak area
Weather
Weather Comments
Very cold in the morning, warm during the day. Calm winds but they were moving some snow onto the NE face of Grandview.
Snow Characteristics
New Snow Depth
14"
New Snow Density
Low
Snow Surface Conditions
Powder
Red Flags
Red Flags
Recent Avalanches
Poor Snowpack Structure
Red Flags Comments
Except for yesterday's large avalanche and the easy-to-find weak layer, we saw no red flags. https://utahavalanchecenter.org/avalanche/71830
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
Pretty much the only avalanche problem. The persistent weak layer of facets is very easy to find. When digging a snowpit, you can easil feel the weak layer with your shovel, and you can easily see it with your eyes. It does seem to be gaining some hardness.
We dug in three locations:
NW facing, 8100 ft, ECTN
N facing, 7600 ft, ECTP 24
ENE facing, 8600 ft, ECTP28
We couldn't find any small slope that would collapse or crack. This area seems to mirror the upper cottonwoods sometimes and many extended columne tests continue to propagate on 20+ taps. However, other places at mid and low elevations continue to produce ECTP's with very low numbers.
As the sensitivity of this avalanche problem decreases (aka the likelihood of triggering a slide on the PWL), it is doing so at different rates in different areas and different slopes.
Below is a profile dug below and to the north of the Grandview avalanche triggered yesterday on this layer.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates