Irwin Operation

CB Avalanche Center 2017-18 Observations

Location: Kebler Pass Area
Date of Observation: 01/14/2018
Name: Irwin Snowcat Operation

Aspect: North East, South, South West, West


Mt. Owen: NE, 12,800′, 40 degrees: SS-N-R2-D2-O? Estimated 60-80cm’s deep, 150′ wide, ran 1,200-1,500′. Ruby Mt.: East, 12,000, 40 degrees: SS-N-R1-D1.5-I? Estimated 60cm’d deep. 250′
wide ran 300′.
Sunset Left SS-AB-R3-D2-O FC-12/21 (60cm x 20m x 300m) Triggered from the low arblast. Debris was 160cm deep to ground

Snowpack: Moving higher on the Westwall we found very variable and discontinuous snowpack ranging from 30-100cm’s. Large isolated wind whales that are plastered in there. More wind effected snow since the 12th, stripped on the top of the UWW and wind crusts and wind textured snow and ski penetration greatly reduced. Cracking in the top 3cm’s. Still mostly weak snow with a soft slab. Fewer signs of instability under foot or with ski cuts. One collapse on a convexity. South aspects got moist yesterday and again today but isolated to South, Not SW. One Avalanche triggered on an airblast.