Avalanche forecast

Kananaskis

Apr 16 – 17, 2018Alberta Parks
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Archived · expired 8 years ago

Avalanche danger

Wed
Thu
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

Challenging avalanche conditions with poor ski quality.

Avalanche problems

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–3
    Keep a safe distance from overhead cornices.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2.5
    40-50cm slab poorly bonded to the April 13 melt/freeze crust interface.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2.5
    Keep an eye out for rapidly increasing solar radiation.

Confidence

-

Weather Forecast

Tuesday will be a typical spring day with sunny periods, cloudy periods and isolated flurries. Winds will be 35-50km/h from the west with a freezing level of 2000m.

Avalanche Summary

Numerous avalanches were observed that had occurred on Sunday in the late afternoon. Some of these avalanches were loose and wet and others were slabs with distinctive crown lines of approximately 50cm deep on average.

Snowpack Summary

Today, we tried to ski the Hero's knob loop and turned around due to a slab sitting on the April 13 crust and the exposure to natural avalanches. 10cm new snow from Sunday night is sitting on a thin melt /freeze crust. Below this is a 40-50cm slab that is poorly bonded to another melt/freeze crust that is 5cm thick produced on April 13 and extends into the alpine. This slab has produced numerous natural avalanches at tree line and in the alpine on all aspects. It is very likely that more avalanches will occur on this layer with strong solar radiation. It is recommended to approach tree line and the alpine with caution and give time for this slab to heal.  The ski quality was poor below 2200m.

Regions covered