Snowpack Tests Above Mammoth Rock

SNOWPACK OBSERVATION
Submission Info
Forecaster
Wednesday, March 7, 2018 - 3:00am
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Recent loading by new snow, wind, or rain
37° 36' 45" N, 118° 59' 30.48" W
Snowpit Observations
More detailed information about the snowpack: 

Toured up behind Mammoth Rock on the standard Sherwins skin track to look at the persistent weak layer. No whumphing or cracking today, no results on ski cuts. Test profile dug at 9354' on a NNE apsect showed that the the facets still fail in snowpack tests. So do several layers of storm and wind deposited snow above the facets (see profile and ECT video). Hand shears going up the slope failed in these more superficial layers with moderate to easy force depending on location. Pole probing on the way up seemed to confirm the snowpack structure from our pit. Most exposed locations had a slightly harder 15cm thick wind slab on top of the storm snow.

Light SW winds were transporting snow across N aspects and onto NE aspects near the top of Sherwin Ridge. Some turbulent suspension, primarily saltation and creep. Only true N aspects with shade were still cold winter snow. The sun was transitioning other slopes to melt-freeze. Below ~8800' most surfaces were either moistening in the sun or had a 1cm melt-freeze crust in the shade.

Snowpit or crown profile photo or graph: 
Snowpit videos (tests, etc): 
Weather Observations
Blowing Snow: 
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