Snowpack

Observation: LSB North

Brett CarrollSalt Lake
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Red Flags
Recent Avalanches, Heavy Snowfall, Wind Loading, Cracking

Snowpack

Instability Comment
<p>Swirling winds have deposited wind slabs on many different aspects along upper elevation ridge lines. These slabs also vary significantly in hardness, thickness, and sensitivity to triggering. We dug a pit at the top of Little Superior Bowl (NE aspect, 10300') and observed ECT P 12 30cm (12") below the snow surface on an interface between a wind slab and softer storm snow. In the same test we also observed ECT N 2 10cm (4") below the snow surface on an interface between last night's snow and yesterday's snow surface (more on that under the next problem).</p> <p>The 10cm (4") of new snow overnight formed a relatively cohesive layer on top of a softer layer of snow. One skier in our party triggered a very small avalanche (4" deep, 30' wide, ran 50') in Two Trees, on a south-facing slope at 10000' that appeared to be on this interface.</p>