Likelihood of triggering a slide on 3/14 interface is gradually decreasing as overlying slab facets. But, you'd be hard-pressed to talk me into committing to a steep, shaded slope.
Thin, high clouds for much of the morning hours, dissipating into the afternoon. Calm to light winds blowing out of a variety of directions. Snow surface heated up slowly.
|1||Past 48 hours||
|D1.5||O-Old Snow||40cm||N-Natural||Relatively fresh slab. Debris appeared to be wet in character. Observed from a distance, so hard to be certain on nature of release mechanism, but suspect that solar radiation played a role.||None|
Went out to check on persistent slab problem in the southeastern portion of the forecast area. Dug on sheltered NNW aspect at 8,400', where HS=120cm. Snow since 3/14 had settled to 40cm, much of which had faceted. Below this it was facets of gradually increasing size and variable hardness (4F- to F-) to the ground. 12/7 interface was still evident and reactive to CPSTs (scores in the low 30s/110 to END), but unreactive to ECT. I even found a few SH grains here. 3/14 interface yielded consistent ECTPs in the 11-14 range and CPST scores in the low 40s/110 to END. 3/17 interface (down 15cm) looked ugly, with FCsf obvious in pitwall, but didn't produce propagating pit results, likely due to lack of a slab. The current surface is considerably faceted and capped with 1-2mm SH on sheltered mid elevation slopes. This snowpack will continue to react poorly to additional loading.
Layer Depth/Date: 3/14, down 40cm
Avoided avalanche terrain on shaded slopesClose