Avalanche Forecast
Issued: Dec 1st, 2024 2:15PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
JMackenzie,
Avalanche Canada
Wind slabs are evident at upper elevations. Use caution when entering lee and cross-loaded terrain, and be aware of overhead terrain.
Summary
Confidence
Moderate
Avalanche Summary
No new avalanches were observed on Sunday, but field teams on Saturday reported significant sluffing in steep cliffy terrain, mainly on East aspects. This was likely due to the strong wind event that was occurring at the time. A party reported a near miss from an overhead avalanche near Tryst Ridge/Little Tent Ridge - see the MIN.
Snowpack Summary
Extensive winds over the previous couple of days have created widespread winds slabs at 2300m and above. Not much evidence of natural avalanche activity on this problem yet, but human triggering on lee and cross-loaded slopes is likely. At lower elevations the snowpack remains weak and unconsolidated with many early season hazards lurking. The October rain crust is one to watch. It is now buried 40 to 70cm and would provide a good sliding layer if the layer above was triggered.
Weather Summary
Monday will be mainly sunny with high temp near -4C. Winds will be moderate to strong from the W to NW. No snowfall is expected for the next several days.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
- If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
Problems
Wind Slabs
Saturday saw a significant increase in winds that were creating fresh wind slabs above 2300m.
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
This slab is sitting on the October crust which has facets above it and provides a good sliding surface. It is more reactive on N and E aspects.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 2nd, 2024 3:00PM
