Mammoth to Mt. Lewis Road Tour, Earthquake Dome Snow Assessment

Mammoth to Mt. Lewis Road Tour, Earthquake Dome Snow Assessment
Submission Info
Monday, March 6, 2017 - 3:15pm
Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Mammoth to Mt. Lewis Road Tour, Earthquake Dome Snow Assessment 37° 40' 25.9212" N, 118° 59' 54.6576" W
Snowpit Observations
More detailed information about the snowpack: 

Quick road tour post storm. Noted a crown line along one of the ridges near Punta Bardini, possible D2. Moderate winds noted along 395 in favored areas with snow banners on many of the visible peaks. Strongest winds closet to the Crest. Some impressive snow transport. Debris noted on Mt. Wood's East Face x 2, possible D2's. Mt. Wood Windloading - Picture attached

Earthquake Dome - 30 to 40 cm ( 12-16") new snow. Fist -, over 4F+ Decomposing. In sheltered locations further from the Crest the new snow has little to no slab character. Hand shears negative. No apparent weakness in the new snow or at the old/new snow interface. Test slopes negative. Low angle ENE aspects below 8400' light melt/freeze crust forming at the surface where the sun filters through the trees. Ridgetop, evidence of some wind stripping, westerly aspects at 9300' mixture of softening melt/freeze crust and new soft snow in shaded pockets. 

Snowpack photos: 
Weather Observations
Blowing Snow: 
Cloud Cover: 
25% 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: 

Winds diminished noticeably the further from the Crest. However, in favored locations winds were brisk with obvious snow transport from moderate Westerly winds with extensive eddying and down-slope loading in the alpine noted. 

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