Sherwins

SNOWPACK OBSERVATION
Sherwins
Submission Info
Forecaster
Thursday, February 2, 2017 - 3:00pm
Red Flags: 
Recent loading by new snow, wind, or rain
37° 36' 38.3832" N, 118° 59' 37.6008" W
Snowpit Observations
More detailed information about the snowpack: 

-Route: Old Mammoth Rd end, up past Mammoth Rock to ridgeline, down Mammoth Rock Bowl.

-2:30pm:  Moist snow at surface up to about 9500'.  ~2" on new very dense snow from this morning, but winds throughout most areas made it hard to tell exactly how much.  

-Handpits resulted in thin surface slab failures (2-3cm thick) in wind deposited areas.  ECT ~9700', NE facing 35 degree slope = several failures without propagation within top 10cm of snowpack.  

-Just below ridgetop (9,900'), shooting cracks extended ~1-1.5m, ~5-6" deep.  Small slab release occured ~20ft wide.  3:30pm: air temp=-1.5deg C, mod southerly winds resulting in some snow transport.  Obscured sky, no precipitation.  

-Settlement cones around trees showed about 1.5-2ft of settlement of the snowpack since the last significant storm last week.  (see attached pic)

-Interesting to note trees in the run-out zone below mammoth rock bowl, below the elevation of the base of mammoth rock, had broken branches and damaged trunks as a result of a large slide coming out of mammoth rock bowl likely at the end of last week's storm.  (see attached photo).

 

Snowpack photos: 

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