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Eastern Sierra Avalanche Center

Public Observation

Observation Details

Observation Date:
November 21, 2021
Submitted:
November 24, 2021
Zone or Region:
Mammoth Lakes
Activity:
Location:
Smuggler's Knob

Observations

While skinning up towards Smuggler's Knob, I noticed cracking and collapsing under my splitboard (not shooting cracks). It happened on all NW to NE aspects on which I travelled, so I wanted to check out what was going on in the snowpack. I first dug a quick handpit which showed a thick crust layer with sugary facets about 6 inches below. Boot penetration about 4-6 inches.

After digging a very rough snowpit on a NW aspect, I found a 1inch freeze/thaw crust with about 6 inches of sugary facets underneath. This was followed by another freeze/crust layer and another 2-3 inches of facets below. Another freeze/thaw crust was present at the very base. Total snowpack 45 inches on this sunny aspect.

Signs of Unstable Snow

Did you see shooting cracks? 
No
Did you experience collapsing or whumpfing? 
Yes

Media

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