Snow conditions above Mammoth Rock

SNOWPACK OBSERVATION
Sherwin Ridge
Submission Info
Monday, December 9, 2019 - 12:00pm
Red Flags: 
Sherwin Ridge 37° 36' 35.136" N, 118° 59' 30.0768" W
Snowpit Observations
More detailed information about the snowpack: 

Started from the parking area below Mammoth rock at 0930. Clear skies and no wind all day. Hoar frost noted down low but only to around 8700ft, not seen at higher elevations.

We followed the skin trench up NE facing slopes to the ridge top, digging hand pits along the way. Ski penetration ankle to boot deep. Hand pits generally failing with moderate force at 20 to 25 cm along new snow, old snow interface. Most failures were non-planar.  

Looking quickly at the upper meter of snow (9300 ft): 25 cm of light snow from Saturday night (4 finger). Below this is a 1cm crust pencil minus crust. One finger dense snow below this crust. 

Snow in the trees was light and unaffected by wind. Snow along the ridgetop moderately wind affected with small cornices overhanging NE facing slopes. Evidence of many small (<100ft long) cornice failures/sloughing just below the ridge line (see photo). 

Skiied one lap skiers left of the Hose and one lap skiers left of the Main Avi path.  Both very enjoyable with mostly boot top powder. Some wind affected snow in the more open areas higher up.  Still some early season obstacles at the lower elevations of this tour. 
 

Roller balls noted during our exit on SE cliffs ~8400 ft. 
 

Snowpit or crown profile photo or graph: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
Clear
Air temperature: 
Below Freezing
Wind Speed: 
Calm
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: 
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