Avalanche Forecast
Issued: Feb 21st, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Persistent Slabs.
Avalanche Canada,
Avalanche Canada
Dangerous avalanche conditions will exist with the arrival of new snow, mild temperatures, and increasing wind.
Summary
Confidence
Moderate
Avalanche Summary
Several skier-triggered and natural wind slab avalanches were reported on Thursday, up to size 2. Occurring on northwest through east aspects, in treeline or alpine terrain.
With more snow, wind, and warm temperatures in the forecast, we anticipate natural avalanche activity to increase in the coming days.
Snowpack Summary
New snow is accumulating across the region, burying various surfaces, including old wind-affected snow in exposed terrain, sun crusts on south-facing slopes, and weak surface hoar or faceted grains in sheltered areas.
Layers from dry conditions in January are found at varying depths within the upper 100 cm of snow. These include weak faceted snow, sun crusts on south-facing slopes, and surface hoar in shaded terrain.
The mid and lower snowpack is generally well-settled and strong.
Weather Summary
Friday Night
Cloudy with 0 to 5 cm of snow. 50 to 60 km/h south ridgetop wind. Treeline temperature -4 °C.
Saturday
Cloudy with 5 to 10 cm of snow. 50 to 60 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 1400 m.
Sunday
Cloudy with 10 to 20 cm of snow (mostly occurring overnight Saturday to Sunday). 30 to 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1600 m.
Monday
Cloudy with 10 to 20 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1600 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Minimize exposure during periods of heavy loading from new snow and wind.
- Avalanche danger is expected to increase throughout the day.
- Be aware of the potential for large avalanches due to buried weak layers.
Problems
Storm Slabs
New snow is building fresh storm slabs on the surface at all elevations. These will be particularly reactive in wind-exposed terrain.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
Weak layers from recent dry, clear, and cold conditions persist within the upper 100 cm of snow. These layers could become more reactive with the added stress of new snow and warming temperatures.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Feb 22nd, 2025 4:00PM
