Sherwins

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SNOWPACK OBSERVATION
Submission Info
Forecaster
Saturday, December 9, 2017 - 12:00pm
Red Flags: 
Obvious avalanche path
37° 36' 42.5484" N, 118° 59' 41.928" W
Snowpit Observations
More detailed information about the snowpack: 

Hiked up the Sherwins boot pack to check on lingering wind slab sensitivity and snowpack faceting. Boot pack and to top of the Sherwin ridge are mostly dry. Dug a quick profile near the top of Mammoth Rock Bowl on a NE aspect in an obviously wind drifted area (see attached profile). Test results were inconclusive and slope tests had only shallow and localized cracking. Even though air temps were above freezing the N face of the Sherwins was in shade and cold almost all day and the temperature gradient in the upper snowpack is still enough to drive faceting. Wind deposits were quite deep near the top of the ridge but the snowpack thinned quickly as I descended. I finally took off my skis and walked down at about 8700', above the Mammoth Rock Trail. Most snow surfaces were facets with a thin wind slab underneath. Lower down 1cm surface hoar covered the snow between still exposed bushes and rocks.

Snowpit or crown profile photo or graph: 
Weather Observations
Blowing Snow: 
Air temperature: 
Wind Speed: 
Precipitation: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: 

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