Avalanche Forecast
Issued: Mar 11th, 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
Snowfall amounts are highly variable throughout the region. Carefully assess and verify conditions as you travel.
Summary
Confidence
Moderate
Avalanche Summary
On Sunday: A few natural and skier triggered storm slab and wind slab avalanches were reported up to size 2.5 (very large). Some of these avalanches stepped down to weak layers that are buried in the snowpack, causing a persistent slab.
Looking forward: Avalanches on buried weak layers may be difficult to trigger, but if one is triggered, it is likely to be large and destructive.
Snowpack Summary
Up to 20 cm of recent snow has been redistributed by southwest wind. This snow sits on a crust on solar aspects and all aspects below 1800 m. Above this, surface hoar or facets exist in sheltered areas and on north aspects.
Two concerning weak layers are present in the mid snowpack: facets/surface hoar or a crust from mid-February buried 30-70 cm, and facet/surface hoar/crust from late January buried 60-100 cm.
Weather Summary
Tuesday Night
Mainly cloudy with up to 7 cm of snow. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -6 °C.
Wednesday
Mainly cloudy with up to 4 cm of snow. 10 to 20 km/h south ridgetop wind. Treeline temperature -2 °C.
Thursday
Mainly cloudy with up to 25 cm of snow. 15 to 40 km/h west ridgetop wind. Treeline temperature 0 °C.
Friday
Mainly cloudy with up to 3 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -3 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Be alert to conditions that change with elevation, aspect, and exposure to wind.
- Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
- Be aware of the potential for large, destructive avalanches due to deeply buried weak layers.
Problems
Wind Slabs
New snow arrives with moderate to strong southwest wind. Surface hoar and facets exists beneath the new snow at higher and in sheltered locations.
Aspects: North, North East, East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Weak layers exist 40 to 100 cm deep. These layers remain a concern where there is no thick, supportive crust under the recent snow.
Aspects: North, North East, East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 12th, 2025 4:00PM
