Avalanche forecast

Jasper

Jan 18 – 19, 2017Parks Canada
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Archived · expired 10 years ago

Avalanche danger

Wed
Thu
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Conditions are changing in the alpine. Be cautious as you transition into wind affected terrain.

Avalanche problems

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Forecasted snow amounts expected to be 10 to 30cms over the next 48 hours. New slabs expected to be touchy in lee terrain, particularly on North Easterly terrain at upper elevations.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    Concern for new snow overloading the season's weak faceted basal layers.

Weather Forecast

Precipitation to continue through the week, with amounts up to 25cm over the next 72hours. Temps cooling gradually and freezing levels sinking down to 1000m by Friday. Winds will be moderate to strong from the Southwest.

Snowpack Summary

Moist HST to 2500m ranging from 10-20cm, with heavier amounts to the South. Multiple surface and buried wind slabs overlying a variety of faceted weaknesses to ground. Extensive scouring and wind affect in the alpine.

Avalanche Summary

Only small loose slides observed out of steep rocky terrain at treeline and lower elevations. Poor visibility in the alpine today.

Confidence

Intensity of incoming weather systems is uncertain

Regions covered