Bulletin d’avalanche

Kananaskis

Dec 14 – 15, 2015Alberta Parks
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Archivé · expiré 11 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Good snow quality at the moment, but watch for fresh wind slabs in the Alpine and take the time to evaluate the early December persistent weak layer before committing to a line.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4
    Wind slabs are evident in lee and cross-loaded features, but these slabs are not found everywhere. Be cautious as you transition into wind affected snow.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4
    The Dec 4 persistent weak layer is buried up to 70cm at Treeline and potential for human-triggering remains. This layer and it's sensitivity to triggering are highly variable. Take the time to explore the snowpack as you travel through the terrain.

Confidence

High

Weather Forecast

Tuesday will be cloudy with sunny periods and isolated flurries. Temperatures should reach a high of -10 °C. Winds will be westerly at 30-40 km/h. There is no significant precipitation expected over the next several days.

Avalanche Summary

Isolated naturally triggered sluffs up to size 1.0 were observed today in steep Alpine terrain on N, NE and E aspects.

Snowpack Summary

Surface faceting due to cool overnight temps. Recent storm snow is settling and exhibiting very little wind effect in most locations. Wind slabs are evident in some Alpine features, but these seem specific to certain drainages. The Feb 4th Persistent Weak Layer remains the principle concern in the snowpack and is buried up to 65cm at Treeline. Shear tests at this interface persist in the moderate range, but significant variability in the distribution and character of this interface exists through the forecast region.

Régions couvertes