Avalanche forecast

Jasper

Feb 11 – 12, 2013Parks Canada
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Archived · expired 14 years ago

Avalanche danger

Mon
Tue
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Enjoy the blue skies and excellent ice climbing conditions. 

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Recent snowfall amounts vary depending on location. Reports from Shangri-La indicate as much as 10cm of new snow.� This new snow is forming wind slabs that are sitting on the previous widespread hardslab and may be sensitive to light triggers.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely
    Size
    1–3
    The hard windslabs that dominate the alpine snowpack have been unreactive lately. It still may be possible to trigger an avalanche on steep unsupported terrain from thin areas and edges of these slabs.

Weather Forecast

Winds to remain light, with partly cloudy skies and no new precipitation until Tuesday.  Models indicate that we may receive up to 20cm on Tuesday. This amount of new snow will increase the avalanche danger significantly.

Snowpack Summary

There is a widespread hard persistent slab bridging the weak basal facets above treeline.  Light flurries over the past 3 days have left 5 - 10cm of new snow in some areas. This snow is forming new slabs sitting on the persistent slab and may be reactive to light triggers. This interface warrants field testing. Below treeline the mid-pack is weak.

Avalanche Summary

No new avalanches were observed or reported today.

Confidence

Forecast snowfall amounts are uncertain

Regions covered