Mammoth Rock

Submission Info
Tuesday, February 21, 2017 - 11:15am
Red Flags: 
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
37° 36' 58.4604" N, 118° 59' 33.738" W
Snowpit Observations
More detailed information about the snowpack: 

Quick tour up to Mammoth Rock from the end of Old Mammoth Road, to top of the Poop Chute, then back down skin track.

1030- Strong and variable winds mostly from the west, but very turbulent. 3-5mm graupel falling at a moderate rate. Sky obscured; poor visibility. (See video) Test slopes produced 1m shooting cracks with hard kicking.

1115- Several hand shears failed while cutting or with easy force, planar, about 40cm down at interface between 1F- wind slab and F storm snow. A few CTE SP down 40cm on this same interface (see video). Snow was very moist yesterday was dry today with much colder air temps. Foot penetration waist deep.

1200- Stomped on the top entrances to the Poop Chute. Some localized cracking (>1m) was the only result.

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: 
More detailed information about the weather: 

Brief break in the clouds while descending. Graupel intensified and got bigger (5-7mm) before we left the trail head.

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