Avalanche forecast

Jasper

Jan 5 – 6, 2021
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Avalanche danger

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

Look for sheltered terrain for the best skiing and avoid thin to thick areas in the alpine.

Avalanche problems

  • Wind Slabs

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

    Wind slabs will need a few days to heal.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–3

    Use caution around thin to thick areas where buried weak layers could be triggered.

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–1.5

    Steep rocky faces and slopes above gulleys hold enough snow to sluff off and bury you deeply if caught in a terrain trap.

Weather Forecast

Wednesday: Flurries. Accumulation: 6 cm. Alpine temperature: Low -10 C, High -8 C. Ridge wind southwest: 15-25 km/h.

Thursday: A mix of sun and cloud. Precipitation: Nil. Alpine temperature: Low -11 C, High -7 C. Ridge wind light to 15 km/h.

Snowpack Summary

45cm of new snow further buries the mid-December persistent layers, (surface hoar and facet combo) down 40-70cm. The mid-pack is supportive where snow is deeper than 60cm. The bottom of the snowpack consists of facets and depth hoar.

Avalanche Summary

During the storm on Jan 3. serval large natural avalanches were observed in the alpine on all aspects. Avalanche control had varied results from no results to several size 3 wind slabs stepping down to deep weakness on all aspects in the alpine.

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Confidence

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