Manteau neigeux

Observation: Big Cottonwood Canyon

Bo TorreySalt Lake
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Photo d’observation 1

Quick report

Aspect
East
Red Flags
Recent Avalanches, Heavy Snowfall, Wind Loading, Cracking, Poor Snowpack Structure
Elevation
2865 m
Slope Angle
35°
Red Flags Comment
<p>Easy to initiate shooting cracks on wind drifted slopes.</p>

Rising avalanche hazard was in your face today, Heavy snow & strong winds created sensitive surface snow conditions. Our group triggered 2 isolated wind drifted pockets. One remotely triggered from roughly 50' away. 12"-16" deep and 15'-50' wide. One ran a reported 300'

Dug a quick test pit on an E aspect at 9450' and found 2 crust's buried 20 cm and 40 cm below the surface. The crust buried 40 cm below the surface has small grain NSF (.5-1) below it. We did not get propagation on this layer in our Extended Column Tests (ECTN 16 @ 38 cm) but something I will continue to look for.

Snowpack

Instability Comment
<p>Found 3"-6" of dense snow failing on a 2" layer of low-density snow that fell earlier this week. 2 pockets triggered were isolated and less than 50' wide.</p>

Upside down snow. Wind affected and punchy.