Avalanche Forecast
Issued: Dec 6th, 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,
Triggering deeper instabilities is still possible.Dig before you commit to your line.
Keep your MIN reports coming as your eyes on the ground are appreciated.
Summary
Weather Forecast
Tuesday: Isolated flurries. Precipitation: Trace. Alpine temperature: High -9 °C. Ridge wind southwest: 15-30 km/h.
Wednesday: Flurries. Accumulation: 9 cm. Alpine temperature: Low -15 °C, High -7 °C. Ridge wind west: 20 km/h
Thursday: Isolated flurries. Precipitation: Trace. Alpine temperature: Low -21 °C, High -13 °C. Ridge wind west: 20 km/h
Snowpack Summary
The midpack is quite supportive and the crust /facet /depth hoar November combo near the ground is the only layer of concern at the moment.
Avalanche Summary
No new avalanches observed in the Icefields area on Monday. Maligne area field team reported no new avalanches on Sunday.
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 conservative route selection, choose moderate angled and supported terrain with low consequence.
- Use caution in lee areas. Recent wind loading have created wind slabs.
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.
- Use caution on open slopes and convex rolls
- Avoid thin rocky or unsupported terrain features.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 7th, 2021 4:00PM
