An AIARE Level 1 group toured up behind Mammoth Rock to the top of Sherwin Ridge to analyze terrain and make snowpack observations on north facing terrain up to Treeline elevation.
Surface conditions are a mix of soft, near surface facets, but even protected treed slopes have been heavily wind affected especially where previous ski tracks exist, and wind board was found to be mostly breakable with some supportable found close to the exposed ridgetop.
Temps at 1300 at 9800' were 1.5c, and there were no observations of loose wet activity. A quick test pit was dug at 9750' on a NNE aspect on a lee loaded slope. HS 130, 20cm P+ wind slab on faceted grains. CT13 and CT19 down 20cm, both BRK.
Group skied the prow down to Mammoth Rock, and encountered variable and sometimes challenging snow conditions, and while verifying the isolated wind slabs, would not ski there again until conditions change.