Bulletin d’avalanche

Kananaskis

Feb 18 – 19, 2014Alberta Parks
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Archivé · expiré 13 years ago

Danger d’avalanche

Thu
Fri
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

New snowfall overnight will add additional load to the recently formed windslabs observed on lee features at treeline and above.  Strong winds in the forecast will result in further loading and increased sensitivity to human triggering.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–4
    The slab on top of this layer is becoming stiffer and more susceptible to widespread propagation across terrain .

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    3–5
    The basal weakness remains, and incoming snow and wind may lead to a re-awakening of this problem.

Confidence

Fair - Intensity of incoming weather systems is uncertain

Weather Forecast

Light snowfall began late afternoon with up to 15cm possible overnight and into Wednesday AM.  Winds are forecast to be strong to extreme resulting in some redistribution of storm snow onto lee features.

Avalanche Summary

no new observed or reported

Snowpack Summary

Test profile on a north aspect at TL highlighted a prominent weakness at the interface between the old surface crust and the recent storm snow.  Compression tests showed easy to moderate results down 77cm.  Numerous large and small settlements observed at treeline on a variety of aspects.

Régions couvertes