Avalanche Forecast
Issued: Dec 20th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
Avalanche Canada,
Avalanche Canada
Keep an eye out for signs of instability and continually assess conditions as you move through terrain.
Storm slabs have the potential for wide propagation due to buried weak layers.
Summary
Confidence
Moderate
Avalanche Summary
On Thursday, a skier triggered size 2 persistent slab avalanche was reported. This avalanche was on an east aspect at 2100 m. It released on the layer of surface hoar mentioned in the snowpack summary.
Snowpack Summary
Up to 10 cm of new snow may have fallen by 4 pm on the 21st. This new snow will be accompanied by strong southerly winds which will form deeper deposits on northerly aspects.
A crust or moist snow will be observed on the surface at lower elevations.
30 to 60 cm overlies a crust on south aspects and all aspects below 1800 m from early December. A layer of surface hoar could be found just above this layer in sheltered terrain at treeline.
Snow depths at treeline are around 90 to 140 cm.
Weather Summary
Friday NightMix of cloud and clear skies with 1 to 3 cm of snow. 25 to 50 km/h southeast ridgetop wind. Treeline temperature -2 °C.SaturdayCloudy with up to 10 cm of snow. 30 to 50 km/h southerly ridgetop wind. Freezing level around 1800 m.
Sunday
Mix of sun and cloud with trace amounts of snow. 30 to 60 km/h southeast ridgetop wind. Freezing level around 1700 m.
Monday
Mostly cloudy with around 5 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -1 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
- Be careful as you transition into wind-affected terrain.
- Be alert to conditions that change with aspect and elevation.
- Be aware of the potential for large avalanches due to buried surface hoar.
Problems
Storm Slabs
Rider triggerable storm slabs may still be found at higher elevations.
Be aware of the potential for wide propagation due to buried weak layers.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 21st, 2024 4:00PM
