Observation: Park City Ridgeline

Observation Date
1/28/2013
Observer Name
Willis Richardson
Region
Salt Lake » Park City Ridgeline
Location Name or Route
Park City Ridge Line 9990 back to Canyons via Roscos.
Weather
Sky
Broken
Precipitation
Light Snowfall
Wind Direction
Southwest
Wind Speed
Calm
Weather Comments
There were intermittent clouds, sun and snow which was very light. I looked to get photos of the Desolation Lake Avalanche but so no evidence which it might have been on the south facing ridge I did not go along that ridge line to see if there was a more extensive collapse.There was rime on all the trees which came from the south and west as you can see from my photos. The snow was from 10 to 20 inches in depth. There was still a bottomless feel to the snow as I exited west along the ridge line. I dropped down and moved along the south slope behind Square Top. There were a number of snow layers as others have observed. The real concern was the sugar snow when I poked my ski grip through the multiple layers. I skied low angle slopes which had at least a 12 inches of new snow. There was not much wind loading only on parts of the ridge line. The ski tracks from the last two weeks had not been completely filled. I saw only two other skiers, one across from Tom's Hill on an ascent directly up and over the cornice and another skiing on the south facing slopes of Little Water Peak. There was quite a bit of facets forming on the snow surface in all areas. There was little wind damage from any of my observations. The loading was on the ridge line. The loading which usually appears south to north was more directed west to north east in nature which was somewhat unusual. I saw no avalanches or cracking in the area only cornice development along all ridges near and in the distance.
Snow Characteristics
New Snow Depth
10"
New Snow Density
Low
Snow Surface Conditions
Powder
Faceted Loose
Snow Characteristics Comments
The snow depth conditions varied but faceted on the surface with light powder beneath and mixed layer below.
Red Flags
Red Flags
Poor Snowpack Structure
Red Flags Comments
The snow pack is unstable in all areas even in low angle slopes. You can feel these variance with a simple glove pit on any slope.
Avalanche Problem #1
Problem
New Snow
Trend
Increasing Danger
Problem #1 Comments
New snow is really going exacerbate the current conditions.
Avalanche Problem #2
Problem
Persistent Weak Layer
Trend
Increasing Danger
Problem #2 Comments
If there is an increase in the wind the light powder and facets will probably increase the danger even on low angled slopes.
Comments
The skiing simple stated spectacular. My only problem was breaking trail in and of the area where I skied, 1 hour in 1. 5 hours out.
Today's Observed Danger Rating
None
Tomorrows Estimated Danger Rating
None
Coordinates