Avalanche forecast

Jasper

Mar 14 – 15, 2015Parks Canada
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Archived · expired 12 years ago

Avalanche danger

Mon
Tue
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

Sunny conditions on Sunday will be inviting.  Resist the urge to go into steep terrain until the new storm snow has stabilized.  Ice climbers, expect the new snow to sluff from above especially when the sun hits.

Avalanche problems

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–3
    Storm slabs and strong SW winds are creating slab conditions on lee aspects. Triggering of these new slabs is likely.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    2–4
    Large cornices or surface avalanches are the likely trigger for this slumbering giant.

Avalanche Summary

Very poor visibility so no observations for high elevations.  Sluffing out of steep terrain was observed at peak of storm.

Weather Forecast

The storm should have blown through by Sunday morning.  Cool clear conditions can be expected with temperature slowly rising through the week.

Snowpack Summary

Heavy snow has fallen at treeline and above.  Strong SW winds are building storm slab on lee aspects.  Deep persistent weaknesses (crusts and basal facets) exist at the base of the snowpack.  Cool temperatures will stabilize snowpack below treeline.  Sluffing out of steep terrain and cliffs is likely.

Confidence

Due to the number and quality of field observations on Sunday

Regions covered