Observation: Park City Ridgeline

Observation Date
1/9/2020
Observer Name
P. Earle
Region
Salt Lake » Park City Ridgeline
Location Name or Route
PC Ridgeline
Weather
Sky
Overcast
Precipitation
Light Snowfall
Wind Direction
South
Wind Speed
Light
Weather Comments
Snow showers in the AM, ramping up to S2 by early afternoon. Light to moderate S-SW winds were occasionally moving snow, but no evidence of fresh wind slabs in my travels. 1 cm windskin at most.
Snow Characteristics
New Snow Depth
8"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments
New snow was right side up and skiing well.
Red Flags
Red Flags
Poor Snowpack Structure
Red Flags Comments
No cracking/collapsing observed. Small sluff off conehead from a skier. Folks were hitting most of the big lines off the PC Ridgeline, W and S Monitor, Dutches, etc without incident. Skied the West Monitor Sneak as I'm not quite as confident in the snowpack as everyone else seemed to be.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Decreasing Danger
Problem #1 Comments
Went out to evaluate the current CR/FC combo on solar exposures. Dug a pit on SE @ 9700' and found evidence of poor structure, but the facets are beginning to round and stability tests revealed moderate strength and no propagation. In this particular spot there was not a wind slab on the weaknesses, so that still may behave a little differently. I think we'll turn the corner on this problem relatively soon especially if the wx forecast verifies and we continue to progressively load this layer without a major water event to tip the balance. See attached snowpit for specifics.
Snow Profile
Aspect
Southeast
Elevation
9,700'
Slope Angle
33°
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate
Coordinates