Observations from Castle Peak

Location Name: 
Castle Peak
Region: 
Donner Summit Area
Date and time of observation: 
Thu, 01/14/2010 - 11:30
Location Map: 
United States
39° 21' 33.66" N, 120° 20' 15.972" W
See map: Google Maps
US


Red Flags: 
Observation made by: Professional Observer
Snowpit Observations
More detailed information about the snowpack: 

The bonds within the new snow layer seems to be gaining strength.  All CT's were in the moderate range and no propagation occurred with the ECT's.  The new snow/old snow surface bond in strong, there were some facets below this old m/f crust but that interface was not reactive in any of the stability tests.  Skied and watched others ski and snowmobile on many avalanche slopes today in the N-NW aspects with no results seen, some sluffing in the steeper terrain >35 degrees.

Photo: Surface hoar 3-6mm in size on all aspects below 8000', some patchy sections up higher where protected from the NE winds.  Surface hoar still visible in the early afternoon hours even on south facing terrain.

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Snowpit videos (tests, etc): 

ECTN

PST 100/100 END

Any other comments about the observation or links to outside pages that have more info on the observation: 

 

Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Moderate
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
Northeast
Accumulation rate: 
More detailed information about the weather: