Red Cone: Facet Layer and Wind Loading

Submission Info
Wednesday, January 24, 2018 - 10:45am
Red Flags: 
Recent loading by new snow, wind, or rain
37° 35' 54.24" N, 119° 1' 8.4" W
Snowpit Observations
More detailed information about the snowpack: 

Toured up Red Cone to dig down and look at the facet layer near treeline and to look at wind slab developments in the alpine. Northerly and shaded slopes still had soft snow, but open E facing slopes had a very thin melt-freeze crust up to 10,000'. Snow surface showed new wind effect in open areas down to about 9,000'. Dug a profile on the knoll E of Red Cone on a 23 degree, NW facing slope at 1045am (see attached profile). Test results were mixed, but we did have a propagation saw test show the potential for fracture propagation in the facet layer down ~50cm. The grains in this layer seemed to be rounding in this location.

Up on top of Red Cone, and all across the Mammoth Crest, moderate S-SW wind was easily transporting snow onto NE-N-NW slopes (see video). Wind blown snow was depositing in Red Cone Bowl at 1200pm as we transitioned to ski down, but new slabs were either very thin (~2cm) or still F hard. I would expect the to get more dense, thicker, and heavier overnight. As of 1230pm though, ski cuts and test slopes had no results.

Snowpit or crown profile photo or graph: 
Snowpit videos (tests, etc): 
Weather Observations
Blowing Snow: 
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