5 ft + on Emmons

CB Avalanche Center 2016-17 Observations

Location: Crested Butte Area
Date of Observation: 01/12/2017
Name: Zach Guy
Subject: 5 ft + on Emmons
Aspect: South
Elevation: 11,100 ft

Avalanches: Had views of the lower runout of Coon Bowl and the starting zones of a couple Climax Chutes and saw no signs of recent activity.
Weather: Obscured skies, S-1 to S1. Light winds with light transport at NTL location.
Snowpack: HS on a flat, windsheltered slope NTL was 280cm. Snowpack is settling quickly, ski pen was about 20 cm and boot pen was about 60 cm. Low angle is skiing nice now.
Dug one pit on a windward, S aspect NTL. The January 1 crust was 85 cm above the ground and buried by a 155 cm, right-side-up slab from F down to P-. ECT produced several non-propagating fractures in mid-storm layers. A deep tap ECT crossed the column on 3rd hit, sudden planar, on the January 1 crust. The weak layer was 0.5 to 0.7 mm rounding facets. No signs of instability breaking trail along a low angle, gladed ridgeline.

S aspect NTL. 5 foot slab over facet/crust layer.

HS in windsheltered area NTL. ~280 cm