Avalanche Forecast

Moderate

The natural cycle has tapered off with the passage of the storm, revealing numerous sz 2-3 avalanches from all aspects failing at the base of the storm snow interface.

Artillery control produced excellent results on Tupper and Macdonald Sat night, with most shots producing sz 2 to sz 3 avalanches from steep start zones, running out onto valley bottom fans. Debris moved fast, likely picking up speed and mass on the buried surface hoar.

Up to 65cm of new snow sits on a sun crust on steep solar aspects. In sheltered locations, this new snow sits atop large surface hoar. Strong winds Sat PM will have promoted surface slab conditions on exposed Treeline and Alpine slopes.

There is a dense, well-settled mid-pack without any significant weak layers.

The Nov 9 crust is down 1-1.5m. The base of the snowpack is comprised of several dense, melt-freeze rain crusts formed in October.

A ridge of high pressure will bring calmer conditions.

Tonight: Cloudy, isolated flurries. Alp low -10°C, light W winds, Freezing Level (FZL) valley bottom.

Mon: Cloudy with sun and flurries, Alp high -10°C, light W winds, FZL 600m.

Tues: Cloudy with sunny periods, Alp high -4°C, light W winds, FZL 800m.

Wed: Clouds, isolated flurries, Alp high -4°C, light SW winds, FZL 1300m.

• Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
• Make conservative terrain choices and avoid overhead hazard.