Avalanche Forecast
Issued: Dec 18th, 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
Allow time for the snowpack to stabilize after recent snow and wind loading
Summary
Confidence
Moderate
Avalanche Summary
Natural avalanches have likely been occurring on Wednesday, particularly in areas with more than 30 cm of new snow and on wind-loaded slopes.
At the time of publishing, we have not received any reports of avalanche activity.
Snowpack Summary
As much as 40 cm of new snow has fallen since Tuesday night. Deeper deposits of snow have likely formed in lee-facing terrain features at upper elevations from recent southwest winds.
A surface hoar layer exists, down roughly 50 to 80 cm from the surface. While its distribution is uncertain, it has the potential to become reactive as a slab forms above it.
Treeline snow depths range from 120 to 180 cm.
Weather Summary
Wednesday Night
Mostly cloudy. 40 to 50 km/h southwest ridgetop wind. Treeline temperature -6 °C.
Thursday
Mix of sun and cloud. 40 to 50 km/h southwest ridgetop wind. Treeline temperature -5 °C.
Friday
Mix of sun and cloud with 0 to 2 cm of snow. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level climbing to 2200 m.
Saturday
Sunny. 20 to 30 km/h south ridgetop wind. Treeline temperature +1 °C. Freezing level 2400 m.
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.
- Avoid freshly wind-loaded terrain features.
Problems
Storm Slabs
Recently formed storm slabs will remain reactive for some time, following heavy snowfall and wind since Tuesday. A weak surface hoar layer beneath the slabs could make them very touchy.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 19th, 2024 4:00PM
