Crystal Ridge Slide

Banff Yoho & Kootenay National Park

david.law022 , Sunday 4th April, 2021 9:10PM

Snow conditions were: Powder, Wind affected. Weather conditions were: Cloudy, Stormy, Sunny, Windy. We rode: Alpine slopes, Steep slopes, Sunny slopes. We avoided: Convex slopes. Riding quality was good.

Avalache Conditions: Slab avalanches today or yesterday. Rapid temperature rise to near zero degrees or wet surface snow.

Incident

The skier was swept in a class 1 avalanche over rocks and small cliffs. Luckily, no serious harm occurred through this slide other than a tweaked shoulder. The skier landed on the surface of the snow and walked out of the area.

Avalanche

A skier-triggered Class 1 avalanche occurred on the North aspect of Crystal Ridge in a steep alpine setting at 2pm (picture attached). The day contained rolling storms mixed with nice weather. Before we set off, we were exposed to about 30 minutes of sun. We noted the layer of sun crust and quick change in the snow quality as we were heading up top for our second run. I predict the slide occurred on a surface about 15 inches deep.