Avalanche forecast

Jasper

Mar 3 – 4, 2013Parks Canada
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Archived · expired 14 years ago

Avalanche danger

Sun
Mon
Alpine
4 · High
Treeline
4 · High
Below
3 · Considerable
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Highlights

Highway 93 from Jasper to Saskatchewan river crossing is presently closed. Results from avalanche control will determine if the closure goes later than Sunday. Check the Alberta road report for updates Sunday afternoon.

Avalanche problems

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    1–3
    The heavy snow combined with strong Southwest winds will build slabs on lee aspects.  More snow overnight will make these easy to trigger with  enough load to perhaps step down into deeper weak layers in the snowpack.

Avalanche Summary

Visibility is presently obscured along Highway 93, so no avalanche observations were possible between Jasper and Saskatchewan river crossing.

Confidence

Timing of incoming weather systems is uncertain on Monday

Weather Forecast

Up to an additional 20cm of snow will arrive overnight with only light to moderate winds. Snowfall will gradually taper off on Sunday as the system moves towards the Southeast. Colder temperatures and clearing skies should begin late Sunday afternoon and continue into Monday.

Snowpack Summary

Up to 50cm of storm snow has fallen in the last 36 hours with more to come overnight. Yesterday, strong Southwest winds redistributed this snow onto lee aspects making another slab over the previous snow surface. These heavier slabs may provide sufficient load for a slide to step down into deeper weak layers.

Regions covered