Avalanche Forecast
Issued: Mar 7th, 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
New snow and moderate winds are expected to build fresh storm slabs throughout the day on Saturday.
Storm slabs could step down to deeper layers, creating larger than expected avalanches.
Summary
Confidence
Moderate
Avalanche Summary
No new avalanches were reported on Friday by 4 pm.
As storm snow accumulates on Saturday, we anticipate an increase in avalanche activity throughout the day as storm slabs grow deeper and become more reactive.
Snowpack Summary
By Saturday morning, 5 to 10 cm of storm snow has accumulated, and an additional 10 to 25 cm of snow is expected through the day. Storm snow covers a crust on all aspects except on high north facing terrain, where new snow buries 5 cm of snow overlying a crust from earlier in March. This second crust likely doesn’t exist above 2100 m.
A layer of facets and surface hoar from mid February can be found down around 40 cm.
Another layer of facets and surface hoar from late January can be found down 60 to 80 cm.
The lower snowpack contain several crusts that are not concerning.
Weather Summary
Friday Night
Cloudy with flurries, 5 to 10 cm of snow. 25 to 35 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1000 m.
Saturday
Cloudy with flurries, 10 to 25 cm of snow. 20 to 30 km/h south ridgetop wind. Treeline temperature -4 °C. Freezing level rises to 1300 m.
Flurries will continue overnight, up to 30 cm of snow.
Sunday
Cloudy with flurries, 5 to 15 cm of snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level around 1500 m.
Monday
A mix of sun and cloud. 10 to 25 km/h southwest ridgetop wind. Treeline temperature -6 °C. Freezing level around 1000 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for fresh storm slabs building throughout the day.
- Dial back your terrain choices if you are seeing more than 25 cm of new snow.
- Avoid freshly wind-loaded terrain features.
- Storm slabs in motion may step down to deeper layers resulting in large avalanches.
Problems
Storm Slabs
Ongoing snow and wind will build increasingly sensitive storm slabs on Saturday. Back off if you are seeing signs of instability like whumpfing, shooting cracks or recent avalanches.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
This layer remains a concern in high north facing terrain where the snowpack depth is variable. This layer may become more reactive with the added stress of new snow and wind.
Aspects: North, North East, East, West, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Mar 8th, 2025 4:00PM
