Avalanche forecast

Jasper

Apr 13 – 14, 2017Parks Canada
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Archived · expired 9 years ago

Avalanche danger

Sat
Sun
Alpine
2 · Moderate
Treeline
1 · Low
Below
1 · Low
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Highlights

Expecting a cool, breezy Easter Weekend with scattered flurries.  The snowpack is stronger but the weak faceted base is still lurking.  Remember this when assessing your travel plans.

Avalanche problems

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    Cornice failure is hard to predict.  Wise to give them a wide berth.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–4
    The deep instability could be triggered by large loads such as a cornice failure or a surface avalanche. Human triggering is most likely from shallow spots or on steep unsupported slopes.

Weather Forecast

Light flurries expected until Sunday with potential accumulation of 15 cm scattered through the forecast area. Winds increasing to moderate from the west.  Freezing level falling into the weekend.

Snowpack Summary

Grabby melt freeze crust, solar aspects. Dryer surface snow on polar aspects over a solid mid-pack bridging the weak base above 2000m. The base is a combination of weak facets and depth hoar mixed around a Nov rain crust. A consistent melt-freeze cycle is occurring below tree line. Snowpack has cooled at tree-line and above.

Avalanche Summary

No new avalanches reported on Maligne patrol.

Confidence

Timing or intensity of solar radiation is uncertain on Sunday

Regions covered