BC Zone Observation Report
Saturday, February 2, 2013 at 12:00 AM
Russel face and NE shoulder
SE Face Russel, reported skier triggered avalanche today. The neighboring NE shoulder had also slid but the two were not directly connected. As there were no tracks in or out of the avalanche on the shoulder it was probably a sympathetic trigger when the larger face ran.
Average Slope Angle:
Maximum Slope Angle:
O - Within Old Snow
Weak Layer Grain Type:
Snowpack at crown: Approx 50CM of basal facets with three ~5cm crusts on top, a thin layer of facets in between each layer. The avalanche ran on facets atop the lowest crust. In some places it stepped down and cleaned out the basal facets but in much of the area we were post-holing through that crust down through the depth hoar. At the FX line CT failed on isolation, Q1.