General Observations

A good friend was kind enough to share these photos with me.  A natural avalanche caused by rapid wind loading from the North winds last Saturday.  Location is the NE shoulder of Old Faithful, ~3,200’,  ~35 degree slope.

Of note:  ~35 degree slope /  around rocks or thin spots  /  rapid loading  /  repeat offender  /  

 

Questions:  What weak layer did it fail on? The basal facets(ground) or a rain crust with facet (mid pack) or just a old/new interface??