Avalanche forecast

Banff Yoho Kootenay

Dec 21 – 22, 2013Parks Canada
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Avalanche danger

Sat
Sun
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
1 · Low
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Highlights

Even though the cool temps have tightened the snowpack, the potential to trigger full depth avalanches remains due to the weak base that will be a problem for some time to come. JBW

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–3

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    2–4

Weather Forecast

Cool northwesterly flow with some weak disturbances will continue for the next few days bring little snowfall but cold breezy conditions. Temps warm slightly by Sunday.

Snowpack Summary

Some moderate wind transport is adding to the slabs at treeline and above. This will increase the propagation potential across the start zone features. The weak base with depth hoar and the October melt freeze crust will mean any avalanche will involve the entire snowpack.

Avalanche Summary

No new avalanches were observed today, but we suspect a few more slabs pulling out on steep lee features with the additional loading. Avalanches to size three both natural and explosive triggered have occurred over the last few days some running full path.

Confidence

Regions covered