Avalanche forecast

North Columbia

Nov 30, 2016Avalanche Canada
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Archived · expired 10 years ago

Avalanche danger

Wed
Thu
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Be on the lookout for lingering wind slabs in the alpine. Avoid likely trigger spots such as shallow, rocky, wind affected areas.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Recently formed wind slabs may remain reactive to human triggers for several days.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Storm slabs may remain touchy even though the storms have passed, especially at higher elevations and on wind-loaded features.

Confidence

Low - Due to the number of field observations

Weather Forecast

Wednesday: Cloudy with flurries / Light to moderate southwesterly winds / Freezing level around 1100 m. Thursday: Mix of sun and cloud / Light westerly winds / Freezing level at valley bottom. Friday: Stormy with 5-10 cm snow / Moderate to strong southwesterly winds / Freezing level around 1000 m.

Avalanche Summary

On Monday, a explosive triggered size 2 avalanche was reported on a northerly aspect at 2200 m. south of Revelstoke.

Snowpack Summary

Expect to find wind slabs in open terrain at treeline and above. The storm slabs created over the weekend should be gaining strength but may still be reactive to human triggers. The mid-November crust is now buried 80-140 cm deep. Recent reports suggest the overlying snow is well bonded to this crust. Below the crust the snowpack is generally well settled. Snowpack depths vary greatly throughout the region with an average of 130-200 cm at treeline elevations.

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