Avalanche Forecast
Issued: Dec 5th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Deep Persistent Slabs.
Tereza Turecka,
As natural activity is fizzling out, triggering lingering wind slabs or the November crust at the bottom of the snowpack is still possible.
Keep your MIN reports coming as your eyes on the ground are appreciated.
Summary
Weather Forecast
Monday: A mix of sun and cloud. No Precip. Alpine temp: High -14 °C. Wind west: 10 km/h. FL at valley bottom.
Tuesday: Cloudy with sunny periods and isolated flurries.Trace. Alpine tem: High -8 °C. Wind southwest: 15-25 km/h. Wednesday: Flurries. Accumulation: 8 cm. Alpine teme: High -6 °C. Wind west: 25 km/h gusting to 65 km/h. FL at valley bottom.
Snowpack Summary
Light to moderate SW winds blew the storm snow into wind slabs or stripped windward features to ground. The midpack is supportive and the crust /facet /depth hoar combo near the ground is the only layer of concern.
Avalanche Summary
Maligne area field team reported no new avalanches on Sunday. No other new avalanches reported.
Confidence
The weather pattern is stable
Problems
Wind Slabs
A triggered windslab has a potential to step down to deeper instabilities with a more destructive potential. Consider testing smaller slopes before committing to a terrain with potential for larger propagation. Watch for hollow sounds and cracking.
- Use caution in lee areas. Recent wind loading have created wind slabs.
- Use conservative route selection, choose moderate angled and supported terrain with low consequence.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Natural activity is decreasing as the recent new snow stabilizes, however, triggering this layer would be a high consequence event so cautious decisions and a thorough investigation is necessary.
- Avoid thin rocky or unsupported terrain features.
- Use caution on open slopes and convex rolls
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 6th, 2021 4:00PM
