AIARE 2 Avy Course

CB Avalanche Center2016-17 Observations

Location: Crested Butte Area
Date of Observation: 01/26/2017
Name: Geoff Unger and Anne St Clair
Subject: AIARE 2 Avy Course
Aspect: North East, East, South
Elevation: 9,250’ to 10,200′

Avalanches: We did perform a number of informal tests on unsupported slopes and very steep short pitches on E and NE aspects near and above the Gothic road. Some of these showed evidence of past avalanching and had been refreshed with the old crowns almost buried. There was movement underneath the skis, but slabs did not propagate beyond ski tips and tails, but did fail down ~35 on the 1/19 SH Layer.
Weather: Scattered clouds and light winds. Stayed cold all day
Snowpack: We toured up to the meadow beneath the Rental Shop glades and dug on a NE aspect at 10,200 feet. CTM SC results were observed on a mid storm layer 28cm down CTH RP results were observed down 42cm on the 1/19 buried SH Layer. ECTN on the mid storm layer and no cracking down on the buried SH. PST 100/100 down 38 Buried SH layer was not easily observable to the eye where we dug our long column tests. Given sudden results our avoidance of steeper terrain from our trip plan and the bulletin was confirmed.