Avalanche forecast

Jasper

Dec 17 – 18, 2019Parks Canada
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Archived · expired 7 years ago

Avalanche danger

Wed
Thu
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate

Highlights

The wind is ripping through the forecast region; forecasted to exceed 80 kph by Tuesday afternoon.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2

    Strong SW winds have likely created wind slab in NW to SE lee aspects. Sensitivity expected to be reactive in the immediate future and might be enough to wake deep, weaker interfaces.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–2.5

    A few large avalanches were observed during last cycle early in December and we suspect it was on this layer.

Snowpack Summary

Top 30cm of the snowpack is mostly unconsolidated except where exposed to wind and slabs may have been formed. The snow depth is variable at all elevations. There is a crust/facet layer distributed through the region in the mid-pack with mixed reactivity and a weak basal facet/depth hoar layer at the base of the pack.

Avalanche Summary

No new avalanches observed or reported.

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Confidence

Weather Forecast

The colder air is leaving the region as a  westerly flow brings warmer moister air in. Strong winds and light precipitation over the next 24 hrs.

For more details: Mountain Weather Forecast

Regions covered