Avalanche forecast

Jasper

Dec 30 – 31, 2016Parks Canada
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Archived · expired 10 years ago

Avalanche danger

Fri
Sat
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Ice climbing  conditions along the Parkway are great!Skiing, not so much.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Windslabs will vary in sensitivity to triggering.  Evaluate each slope carefully.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Recent large avalanches have been reported on this layer as snow load increases.

Weather Forecast

Light snow overnight with moderate SW wind.  Seasonal  temperatures.  Clearing and colder temperatures expected later this weekend.

Snowpack Summary

Continued moderate SW winds building slabs in lee features and cross loaded gullies. Weak layers include; buried surface hoar (Dec 11) in sheltered NE aspects around treeline and the Nov 12 crust approximately 30cm from the ground. Generally, in the Alpine there is only snow in lee areas and the snowpack is faceted and weak. 

Avalanche Summary

Previous avalanche activity up to Sz 2 on N-NE-E slopes below ridgeline and to Sz 3 on a westerly aspect in steep, rocky, cross loaded terrain between 2400-2700m.  No new observations due to poor visibility.

Confidence

Due to the number of field observations on Friday

Regions covered