Donner Summit Observations

Location Name: 
Donner Summit
Region: 
Donner Summit Area
Date and time of observation: 
Sat, 02/27/2010 - 12:00
Location Map: 
United States
39° 18' 18.5328" N, 120° 19' 1.9272" W
See map: Google Maps
US


Red Flags: 
Recent loading by new snow, wind, or rain
Observation made by: Professional Observer
Snowpit Observations
More detailed information about the snowpack: 

Below 7500' widespread roller ball activity and point releases on all aspects by mid afternoon both human triggered and natural triggered in steep terrain and steep rocky terrain.  Above 7800' no signs of instability were seen or observed.  Ski cuts and ski kicks on steep slopes and cornices above treeline revealed no propagation results.  Newly formed wind slabs were not reactive to formal or informal tests.  Solar radiation is playing a much larger role in our snow stability as we enter March. 

Photos:  At 7400' and below- showing mostly skier/rider triggered point releases in steep rocky terrain, NW aspects.   

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Any other comments about the observation or links to outside pages that have more info on the observation: 

 

Weather Observations
Blowing Snow: 
No
Air temperature: 
Above Freezing
Wind Speed: 
Light
Precipitation: 
Air temperature trend: 
Static
Wind Direction: 
Northeast
Accumulation rate: 
More detailed information about the weather: