The main objective was to visually confirm which weak layers the two skier-triggered avalanches failed on. Both of those avalanches failed on the new/old layer (1/5) buried 12-16 inches deep. The new/old layer is made up of various types of facets, surface hoar, and crusts. The weather built another layer of complexity in our snowpack.
Mostly cloudy for the majority of the day. Snow started to fall around 1300hrs with S-1 rates until 1700.
Jan 10, 2023
(+/- 1 day)
Camp Creek (near the "Anti-Cross")
|D1||SS-Soft Slab||I-New/Old Interface||1ft||AS-Skier||Report|
Jan 11, 2023
(+/- 1 day)
Governors Punch Bowl
|D1||SS-Soft Slab||I-New/Old Interface||1.5ft||AS-Skier||Report|
Gov. Punch Bowl Skier Trigger:
There were two avalanches (refer to Avalanche Database) involved in this location. One was possibly skier-triggered with ski tracks leading into the crown. The avalanche failed on a thin layer of facets on top of a crust. It is possible that the party remotely triggered another avalanche about 100' away. Both of the crowns appear to be the same depth, so it is likely they failed on the same weak layer.
Camp Creek (near the "Anti-Cross") Remote Trigger:
Ski tracks left from a steep rock outcropping and were within 10' of a soft slab. It was about 40' wide and didn't travel very far (~50'). The avalanche failed on a weak layer of buried surface hoar (2-3mm) down 32cm (1/5).
As I was traveling across a south slope, I experienced two large collapses. See snowpits below for results.
Layer Depth/Date: 30-40cm/0105
Weak Layer(s): Jan 5, 2023 (SH)
Comments: Shading depicts terrain traveled today and found evidence of instability.
There is growing evidence that the new/old weak layer (1/5) might not be just a shady problem (NW-N-NE-E). More evidence is needed to see if this is a southern end of the compass problem too.
I stayed on bed surfaces and debris piles when below avalanche terrain. The day was filled with an assessment mindset.