Avalanche forecast

Jasper

Mar 3 – 4, 2020Parks Canada
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Archived · expired 7 years ago

Avalanche danger

Wed
Thu
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low

Highlights

Moderate SW winds continue to hammer through open alpine, and treeline terrain building windslabs and huge cornices throughout the whole region. 

Avalanche problems

  • Wind Slabs

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

    Wind effect and windslab are common through the region with varied reactivity. Ridge tops and immediate lee features pose the most obvious hazard to triggering but anywhere with visible wind effect can pose a threat.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–3

    Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe! Caution traveling, skiing and climbing in run out zones as avalanche have the potential to run full path

Weather Forecast

Two systems are expected to move through BC over the next two days. As the second low pressure system reaches BC-AB border, light snow with moderate to strong westerly winds expected. Isolated areas on the Icefields Parkway may receive up to 10 cm new snow overnight and continuing through the day Tuesday.

Snowpack Summary

Previous storm snow overlies a variety of surfaces depending on aspect and elevation. New wind slabs forming on lee aspects. The Columbia Icefields region has a well bridged mid pack overlying basal facets and depth hoar. The northern part of the forecast region has a generally shallower snow pack that is less bridged.

Avalanche Summary

Road patrol conducted on Maligne Road today. No new avalanches were observed or reported.

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Confidence

Intensity of incoming weather systems is uncertain on Tuesday

Regions covered