Observation: Upper Weber Canyon

Observation Date
1/11/2019
Observer Name
jg
Region
Uintas » Upper Weber Canyon
Location Name or Route
Upper Weber Canyon
Weather
Sky
Scattered
Wind Direction
Northeast
Wind Speed
Light
Weather Comments
Cloudy skies early slowly breaking up during the course of the day and clear by dusk. High peaks were shrouded with clouds through mid day. Wind were light from the NNE. Temps in the mid teens at 10K.
Snow Characteristics
New Snow Depth
1"
New Snow Density
Low
Snow Surface Conditions
Powder
Dense Loose
Snow Characteristics Comments
A trace to 1"of new snow fell overnigh compised of graupel, stellars and rimed stellars.
Red Flags
Red Flags
Recent Avalanches
Cracking
Collapsing
Poor Snowpack Structure
Red Flags Comments
Red flags were minimal and not widespread. Saw one old, natural slide on a steep east aspect that most likely went during the last storm cycle. I had one big whoopfing collapse that took me by surprise on the second time up my skin track and than another smaller collapse 50 feet higher.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments
There are several persistent weak layers in the snowpack now that should trend toward the same to decreasing danger with no new snow load.
Snow Profile
Aspect
Northwest
Elevation
10,000'
Slope Angle
24°
Comments
Small pocket on east aspect at 9600 feet.
First photo, new snow, second photo, basal facets, third photo, rime in the trees.
I traveled from 7400-10,400 mostly on the north half of the compass. I found soft snow at all elevations and aspects traveled. I was surprised that I didn't encounter melt/freeze crust at lower elevations with the warm temps from the last couple of days. Skinning, i was sandboxing on and off at lower elevations up to about 9K but mostly supportable. Rime above about 10K but not much.
I did two ECT's with one ECTX and one ECTN18, 39cm's down. Four CT's all failed on basal facets with moderate effort to fail. One CT18RP 57cm's down. A bit a temperature gradient in the upper 20 cm's of the snowpack but not radical.
Today's forecast reflected what I was finding in my travels.
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate