Sherwins - New Snow

Above Mammoth Rock
Submission Info
Saturday, March 7, 2020 - 4:30pm
Red Flags: 
Recent loading by new snow, wind, or rain
37° 36' 35.586" N, 118° 59' 32.0388" W
Snowpit Observations
More detailed information about the snowpack: 

Late afternoon tour up the Sherwins from the end of Old Mammoth Rd up by Mammoth Rock to the ridge and back down to check on new snow amounts, winds, and potential wind slab.  Snowing up to S2 (2cm/hour) at times, and diminished by 4:30, wth clearing skies by 5.  At 4:30 ~1" of new snow at parking, ~2-3" towards the top with some areas with slightly more deposition, and some isolated areas of 5-6" denser wind deposits, and plenty of more exposed areas stripped to old surface.  

All areas of wind deposit that I came across were well bonded to the old surface, and no shear occured with hand tests (see attached video).  Couldn't find any areas with concerning stability where I travelled. but imagine that some isolated areas of more concerning wind deposit exist out there.  

Windy in all exposed areas at all elevations (quite variable directions), with consistent strong southerly winds at ridgetop.   Just below ridgetop on northerly aspects was actually thinner new snow than lower down.

Very variable old surface melt-freeze crust from non-existent up higher on more northerly aspects to thin zipper, to thick and supportable (and everything in between).  Not bad skiing :-)    

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Snowpit videos (tests, etc): 
Weather Observations
Blowing Snow: 
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: 
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