Avalanche Forecast
Issued: Jan 27th, 2025 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs and Wind Slabs.
Avalanche Canada,
Avalanche Canada
As the temperature drops, the avalanche danger should follow.
It may still be possible to trigger deep weak layers in thin snowpack areas.
Summary
Confidence
High
Avalanche Summary
A rider triggered a large (size 2.5) slab avalanche on a southeast alpine slope on Sunday. The slab ranged from 20 to 100 cm deep with wind loading variability. The slab may have released on the persistent weak layer described in the Snowpack Summary. See this MIN for more information.
Snowpack Summary
Recent warmth then cooling is expected to have created a crust on all aspects, except perhaps treeline and above on northerly slopes.
The surface has been heavily wind-affected in exposed areas. A crust exists below 1250 m, making for challenging travel conditions.
A weak layer of facets and a crust from early December is buried roughly 50 to 100 cm deep.
Weather Summary
Monday Night
Mostly cloudy. 30 to 60 km/h west ridgetop wind. Treeline temperature -4 °C.
Tuesday
Cloudy with up to 5 cm of snow. 20 to 40 km/h west ridgetop wind. Treeline temperature -4 °C.
Wednesday
A mix of sun and cloud with 5 to 10 cm of snow overnight and 2 cm during the day. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -4 °C.
Thursday
A mix of sun and cloud with up to 5 cm of snow. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -8 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid thin areas like rocky outcrops where you're most likely to trigger avalanches on deep weak layers.
- Avoid steep terrain that is rocky and thin.
- Be mindful that deep instabilities are still present in the snowpack.
Problems
Persistent Slabs
A widespread crust with facets is buried 50 to 100 cm deep. It's expected that triggering may still be possible in thin areas or with a large load (cornice or avalanche).
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Old wind slabs, if triggered, may step down to a weak layer deep in the snowpack.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 28th, 2025 4:00PM
