Avalanche forecast

Jasper

Jan 20 – 21, 2017Parks Canada
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Archived · expired 10 years ago

Avalanche danger

Fri
Sat
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Cautious route finding and conservative terrain choices are required with the unpredictable snow conditions.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    Cross-loaded gullies and ridgeline features will be especially sensitive to human triggering.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Storm slabs may be present especially at tree-line. If triggered, it is likely it will initiate the rest of the weak faceted snowpack.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Isolated locations where this layer is persisting. Has morphed into depth hoar in many areas.

Weather Forecast

No forecasted precip, light SW winds and cooling temps into the weekend.

Snowpack Summary

New transported HST building developing wind slabs in the ALP on N to E asps. At TL, soft slab and wind slabs in open areas over a faceted midpack to depth hoar. Nov crust in isolated areas; deeper, sheltered north aspects. Thin rain crust BTL on all aspects below 1600m. Loose point releases from steep un-skiable terrain at all elevations.

Avalanche Summary

No avalanches reported or observed.

Confidence

Due to the number and quality of field observations

Regions covered