Quick report
- Aspect
- North
- Elevation
- 3078 m
- Slope Angle
- 41°
This snowpit was on a steep 41° slope on a due north facing piece of terrain in Hideaway Park. I believe that the steepness of the terrain is what allowed for failures with propagation with such low numbers including one failure when cutting the back out. These failures show us that we have poor structure and we are not seeing avalanches on this weak layer. As Greg mentioned we had one PWL avalanche that was explosive triggered on December 21st, but the last reported avalanche on this PWL layer was December 9th in the Wilson Chutes. I don't trust this PWL layer. While temperature gradient in the snowpits I have dug shows healing in this layer. This structure is still very poor and any additional load (either new snow or wind) is suspect in my mind. The immediate concern is new snow and wind-drifted snow (upper level) instabilities and I will keep the PWL layer near the ground in the back of my mind when making terrain choices for the time being.
Snowpack
- Instability Comment
- <p>Photo of natural dry loose avalanches ( most likely running on a layer of rimed stellars) on Silver Fork Headwall. I noticed the same dry loose characteristics in steeper terrain in Days Fork and saw observed some spontaneous dry loose avalanches on east facing terrain with an uptick in winds around 330pm. These were dry loose point releases were about 4-6" deep and would not have been enough to push a rider over unless it was in extremely steep terrain with room to run. On a a steep east facing gully feature at 8700' I was not able to trigger any avalanches in the new snow. </p> <p> </p> <p>I noticed some wind-drifted snow isolated to the ridgelines (within 15' of the ridgelines) where there was some minor cracking. There is now snow available for transport and is something I would watch for in the next few days. </p>
New snow was 6-8" deeo in most locations. Old snow surface was a mixed bag of crusts in places I traveled. The solar aspects (S-W) were stiff melt-freeze crusts with new snow on top and the polar aspects (N-E) had a lighter crust underneath the new snow. Some wind-drifted snow isolated to the ridgetops. Around 9-10am I noticed some rimed stellar crystals. All the dry loose avalanches I saw were running on a density change within the new snow that I suspect was rimed crystals.