Observation: Lower Weber Drainage

Observation Date
12/31/2022
Observer Name
Mike J
Region
Uintas » Lower Weber Drainage
Location Name or Route
Lower Weber Canyon
Weather
Sky
Obscured
Precipitation
Moderate Snowfall
Wind Direction
Northwest
Wind Speed
Moderate
Snow Characteristics
New Snow Depth
10"
New Snow Density
Medium
Snow Surface Conditions
Powder
Red Flags
Red Flags
Recent Avalanches
Wind Loading
Collapsing
Poor Snowpack Structure
Avalanche Problem #1
Problem
New Snow
Trend
Decreasing Danger
Avalanche Problem #2
Problem
Persistent Weak Layer
Trend
Same
Snow Profile
Aspect
Northeast
Elevation
9,900'
Slope Angle
32°
Comments
After the rain let up and started to switch to snow around 10:30 I headed up to 10k to see what the snow was doing. There was about 10 inches of new snow that has fallen since our partly sunny day, Thursday. The Wednesday storm finished off with 6 inches of smoke on top of a dense skier supportive layer. That smoke made for the best ski day of the year but is now the weak snow that failed ECTP 6 SC Q1 in my stability tests. Although the test was very repeatable, pushing on steep entrances zones from a safe place above produced no results. It seems there is propagation, but the energy released during the collapse of the new snow is not enough to overload the planar friction. In other words, the snow is connected and collapsing on a weak layer but it’s not able to run down the slope, yet. It needs more weight. The PWL is now sitting around 45 cm above the ground. In most places this layer is at ground rubble level and not necessarily a major issue. That was certainly the case where I dug, in and around large firs. Open grassy terrain is another story and I am still avoiding that type of terrain on the north and east half of the compass.
Today's Observed Danger Rating
High
Tomorrows Estimated Danger Rating
High