Evening Ridge

Kootenay Boundary

kylegorenko , Tuesday 28th December, 2021 6:55AM

Day two out with an AST - 1 course.

Snow conditions were: Deep powder. Weather conditions were: Cloudy, Cold. We rode: Mellow slopes. We avoided: Alpine slopes, Convex slopes, Steep slopes. Riding quality was good.

Avalache Conditions: Slab avalanches today or yesterday. 30cm + of new snow, or significant drifitng, or rain in the last 48 hours.

Snowpack

Repeated CTH 22, 26 (RP) down 80cm failing 2cm above zipper crust (.5mm)

Incident

Near end of day at approx. 15:30 lead instructor noticed a new crown off 1st Peak Evening Ridge. After observing as best we could, two skiers were spotted travelling back upslope through debris. Reported to WH2O patrol who initiated a response. Crown was approx. 200m wide, 60-180cm deep , and ran for roughly 400m. Triggered in a steep, shallow, wind affected area at ridgetop likely failing on Dec 04 MFcr which is now breaking down with facets present throughout.