Avalanche forecast

Jasper

Nov 17 – 18, 2011Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Thu
Fri
Alpine
2 · Moderate
Treeline
1 · Low
Below
1 · Low
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Highlights

Snow warning for 15cm for Yellowhead and Hinton but not Jasper. Uncertain whether system will infiltrate into Jasper's region.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    Moderate W and NW winds are slowly adding load to the slab features which have weak basal crystals. Some whumphing was observed in the Bald Hills possibly failing on surface hoar layer 25cm down. Alpine snowpack depths are variable.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    Soft to hard slabs up to 40cm thick can be found in gullies and lee terrain. The condition is less prevalent at Treeline. Observed a couple of size 2-3 natural avalanches scrubbing to ground in the Icefields on steep alpine features near ridgetops.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Thursday

Regions covered