Avalanche forecast

Jasper

Feb 13 – 14, 2019Parks Canada
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Archived · expired 8 years ago

Avalanche danger

Thu
Fri
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate
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Highlights

Good skiing can still be found in sheltered locations, but be cautious if traveling in shallow snowpack areas.

Avalanche problems

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Cold temperatures continue to weaken the surface snow. Expect sluffing out of steep rocky terrain.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–3.5
    This problem is still present and could be triggered from shallow snowpack areas. See MIN report.

Weather Forecast

A weak ridge builds Wednesday, giving stable weather for the next couple days. Spin-off from a Low impacting the south coast will give cloud and flurries on Friday.Wednesday: Mostly sunny. Light winds. Alpine temps Low -20C, High -12C.A detailed mountain weather forecast is available from Avalanche Canada.

Snowpack Summary

Ongoing cold temps have weakened the structure of the upper snowpack. There is no longer a slab over the persistent weakness sitting down 30-40cm (surface hoar, crusts, and/or facets). The basal snowpack is structurally weak in shallow areas, consisting primarily of facets/depth hoar (cold temps continue to develop this deep persistent weakness).

Avalanche Summary

Several loose dry avalanches up to size 2 have been naturally triggered in the facetting snowpack in steep shallow areas over the past 2-3 days. On Feb 7th, a size 2 deep persistent slab was triggered by skiers in the Maligne area on a W aspect, 1950m, on a 30 degree slope (see MIN).

Confidence

Regions covered