Test Slopes, Red Cone

SNOWPACK OBSERVATION
Submission Info
Forecaster
Thursday, December 14, 2017 - 10:30am
Red Flags: 
37° 35' 45.6" N, 119° 1' 26.76" W
Snowpit Observations
More detailed information about the snowpack: 

Toured up Red Cone on the standard approach looking for persistent slabs that might still be reactive to human trigger. Below about 9200' snow cover has become spotty in the Lakes Basin. East and Southeast aspects with any sun exposure had moist, spring-like, surface snow up to 10,000'. Shady aspects had a variety of surface conditions: surface facets, old and hard wind board, and thinner breakable wind crust. Wind crusts seem to be faceting and breaking down, but remain at least 1F hardness. Aging wind slabs I encountered were between 5 and 20cm deep and in many places, on E-N-W aspects, still had large grained F hard sugar snow underneath.

Test slope results were not consistent across whole aspects or elevation bands but I did kick off a very small D1 that slid about 10' above Lake George at 9200' on a WNW aspect. I had another positive test slope result (approximately 10' shooting cracks) on the E aspect of Red Cone at 10,350' on an ENE aspect. This second result created large plates 10cm thick and 3 to 6' across. They slid only a few inches on top of the same facet layer. See attached photos.

Snowpack photos: 
Test slope result above Lk. George
Test slope result E aspect of Red Cone
Results in 1F hard wind slabs on top of F hard sugar snow
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
West
Accumulation rate: 
More detailed information about the weather: 
-- placeholder --

ESAC receives significant financial support from ...