Crown profile from Frog Lake Ridge

Location Name: 
Frog Lake Ridge
Region: 
Carson Pass Area
Date and time of observation: 
Mon, 01/07/2013 - 14:00
Location Map: 
United States
38° 41' 11.04" N, 119° 58' 51.6" W
See map: Google Maps
US


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

Pit and video: Directly adjacent to shallow human triggered wind slab from 1/05. Although column tests had Sudden Planar character, ECTs did not propagate and PSTs did not show propogation potential.

Pic: Evidence of previous NE winds. Light NE winds again today, but no wind transport observed. Sastrugi along ridgelines and downslope on E/NE aspects into traditional start zones. Mid slope and lower still held ~15cm of yesterday's storm snow.

Minor skier initiated cracking (50cm long and less) on wind loaded steep W aspects along Frog Lake Ridge. Wind loading was localized to just below ridgetop.

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
50% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Static
Wind Direction: 
Northeast
Accumulation rate: 
None
More detailed information about the weather: 

Thin, high cloud cover increased to 100% of sky late afternoon.