Avalanche forecast

Jasper

Dec 6 – 7, 2021
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Avalanche danger

Tue
Wed
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low

Highlights

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.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–2.5

    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.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3

    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.

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

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.

Regions covered