Mammoth Rock

Submission Info
Volunteer Observer
Friday, February 15, 2019 - 1:45pm
Red Flags: 
Recent loading by new snow, wind, or rain
Mammoth Rock 37° 36' 54" N, 118° 59' 30.4188" W
Snowpit Observations
More detailed information about the snowpack: 

Went for a couple quick laps  near Mammoth Rock this afternoon. Winds were moderate to strong and locally variable in direction. Very little shelter from the wind even in dense tree stands. Less new snow than expected and surprisingly little wind affect on snow surface in open areas. Rain crust from yesterday's event is apparent and makes for some challenging skinning in areas stripped by wind and other shallow spots. The crust is a couple cm thick and is mostly supportable on skis. New snow was F hard sitting on top of rain crust and separation between the layers is easy and somewhat clean in hand shears. Kick turn tests negative. Not as easy as expected to entrain surface snow with a hard turn on slightly steeper roll overs. Snowfall was moderate to heavy throughout, and coupled with wind transport our skin track and descent tracks were mostly covered even on consecutive laps. Storm slabs and wind deposited snow were soft beneath tree line. On our second lap we noted more cracking of the snow surface, albeit isolated to skis. 

Weather Observations
Blowing Snow: 
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Air temperature trend: 
Accumulation rate: 
Greater than 1 in. per hour
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