Donner Peak Observations

Dug 2 snowpits on northerly aspects at different elevations to look at the buried facet layer.  At 7500', HS = 140cm with the facet weak layer down 90cm.  CT's showed sudden collapse, 2x ECTX, PST 33/100 END down 90cm.  See Snow profile for other snowpit at 7600'.  Below 7500', the snowpack remains shallow and variable with the buried facet layer being buried 2-3' deep.  Above 7600' much more snow exists with a supportable snowpack.  At both locations some test results indicated unstable results and that propagation continues to be likely if the weak layer can be initiated. 

Full cloud cover with light winds kept warming to a minimum during the morning.  Closer to mid day the sun came out with warm temperatures and continued light winds.  Roller ball activity was observed on most aspects below 7500' with some small loose wet activity in steeper sun exposed terrain.