Avalanche forecast

South Rockies

Jan 11 – 12, 2015Avalanche Canada
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Archived · expired 12 years ago

Avalanche danger

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

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Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Storm accumulations from last week have likely gained significant strength, although lingering wind slabs may still be sensitive to human triggering in high elevation lee terrain.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–4
    A buried persistent weakness, down 30-70 cm, should remain on your radar as it has the potential to produce large avalanches.

Confidence

Fair - Due to the number of field observations

Weather Forecast

A dry ridge of high pressure will dominate the region for the period. Valley cloud may develop, although generally clear skies are expected at higher elevations. Winds are forecast to remain light from the northwest, while freezing levels should hover at (or near) valley bottom.

Avalanche Summary

No recent avalanches have been reported.

Snowpack Summary

A dusting of new snow may overlie a melt-freeze crust which exists below treeline and on south-facing slopes. In upper elevation terrain, these modest accumulations overlie hard, stubborn wind slabs. Up to 75 cm below the surface you may find a hard, thick crust which formed mid-December. This crust has overlying facets and/or surface hoar. This layer seems variably reactive throughout the region. In areas where the overlying slab is thick and cohesive, large avalanches are possible at this interface. A crust/facet combo which formed in November seems to have gone dormant for the time being.

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