Avalanche Forecast
Issued: Feb 20th, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
Avalanche Canada,
Avalanche Canada
Carefully assess local conditions, as new snow, wind, and warming temperatures could increase avalanche danger throughout the day.
Summary
Confidence
High
Avalanche Summary
Over the past week, several small avalanches (mostly size 1 to 1.5) have been reported throughout the region, both natural and human-triggered. The prevailing trend shows persistent slab avalanches, primarily on southerly-facing aspects, ranging from 20 to 50 cm in depth, while wind slabs have occured on mostly northerly-facing terrain, typically 20 to 30 cm deep.
Snowpack Summary
New snow on Friday will continue to accumulate atop layers of surface hoar in sheltered terrain and a thin crust on sun-affected slopes, approximately 20 to 30 cm below the surface.
Below these layers, the upper snowpack is largely faceted and poorly bonded with another layer of surface hoar in sheltered terrain and a thin crust on sun-affected slopes. This layer, buried in late January, varies in depth but generally exists within the upper 80 cm of snow.
The mid and lower snowpack is generally well-settled and strong.
Weather Summary
Thursday Night
Cloudy. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C.
Friday
Cloudy with 2 to 8 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.
Saturday
Cloudy with up to 20 cm of snow. 30 to 60 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level rising to 1800 m.
Sunday
Cloudy with 5 to 15 cm of snow. 20 to 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1800 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
- Avalanche danger is expected to increase throughout the day.
- Be aware of the potential for large avalanches due to buried weak layers.
Problems
Wind Slabs
A combination of new snow, wind, and mild temperatures will increase the likelihood of wind slab formation.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Weak layers from recent dry, clear, and cold conditions persist within the upper 80 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 21st, 2025 4:00PM
