Observation: Pink Pine

Observation Date
2/8/2020
Observer Name
Champion
Region
Salt Lake » Little Cottonwood Canyon » Red Pine » Pink Pine
Location Name or Route
Pink Pine
Weather
Sky
Overcast
Wind Direction
Northwest
Wind Speed
Moderate
Weather Comments
Was sunny and bluebird as we were heading up the canyon, but the time we made it to the parking lot it was grey bird. Stayed grey bird, with light winds and no precipitation for most of the afternoon. Around 3 pm the clouds filled in, we lost visibility, and light graupel began to fall.
Snow Characteristics
Snow Surface Conditions
Wind Crust
Melt-Freeze Crust
Damp
Snow Characteristics Comments
A variety of snow surfaces out there today. Primarily dust on crust, about 3cm of graupel sitting on a varying (2-5cm) depth melt-freeze/rime/rain crust. In some protected areas on the way out, in the lower elevations, the snow surface was damp. Areas not protected from the winds were scoured and showed signs of the high winds from the last few days.
The trees were covered in heavy icy, and piles of ice were falling off the trees into the skin track.
Photo of the icy trees:
Red Flags
Red Flags
Recent Avalanches
Wind Loading
Poor Snowpack Structure
Comments
Headed out today to try to see what was going on in White Pine, and across Little for the last couple days. Sadly didn't have great visibility, but saw that almost every south-facing aspect across from White Pine had gone either naturally, or with assistance during the storm. As for the snow surface, we had a pretty stout melt-freeze/rime crust with about 2-5cm of graupel on top of that. The crust was primarily supportable, but when skiing the new graupel was quickly running on that surface. It should make another interesting bed surface.
When we stuck our shovel blades in, we found our tests (ECTP23/ECTP21) on a density change 30cm down in the snowpack at the lower elevation snowpit. At 9,000 feet we were unable to get any results in our ECT, but go the same layer to fail when doing a shovel shear. It was consistently 30cm down at both 8,000 feet and 9,000 on both an E and N facing aspect. I would guess that that is just the transition between Monday's storm, or during the temperature increase Wednesday night.
While we were out walking, we were unable to get any signs of instability such as cracking, whomping and I was unable to get anything to move on cut banks and small test slopes. Where we were was generally protected from the winds, but did see a bit of transport happening as the clouds dropped on us, and the weather was changing.
For the upcoming week, I would be most concerned about winds continuing to load that midstorm density change - or the rime crust becoming a future bed surf from new snow instabilities.
Tree limb took down midstorm by the high winds
ECTP23 down 30 cm on density step - East Aspect - 8100 ft - 31 degree slope
Avalanche paths filled with debris on the south-facing terrain of Little Cottonwood.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable