Bulletin d’avalanche

Kananaskis

May 3 – 4, 2014Alberta Parks
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Archivé · expiré 12 years ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
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Points saillants

The snowpack is best described as "upside down" right now. Conditions will improve as it cools, but for now the warm snow is problematic at low elevations. Ski quality is probably pretty good at the upper elevations.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Two slab concerns: At lower elevations the cohesive(warm) nature of the new snow is creating a slab, at upper elevations the wind has created storm slabs. The moist snow below will be a likely failure layer

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    3–6
    This is still the main concern right now. The new snow is stressing the bond at the bottom layer which will make it slightly touchier and the midpack is still moist from all the rain. Some time is needed to renew the trust with this layer.

Confidence

Fair - Forecast snowfall amounts are uncertain on Sunday

Weather Forecast

More snow is on the way. The main front has passed, but our forecast still shows 6cm's over night with a few more coming starting tomorrow afternoon. The winds will be from all directions, but mostly light with the occasional gust in the alpine. Freezing levels will reach 2050m tomorrow. Snow depth at Burstall Pass is 226cm's and 135cm's at the road.

Avalanche Summary

None observed, however skies have been obscured. There has undoubtedly been avalanche activity on steeper alpine slopes.

Snowpack Summary

20cm's of new snow at Burstall Pass in the last 24hrs. This came in warm and gradually cooled as the storm progressed. We can expect there to be some moderate wind transport and new slabs in lee features. The moist snow underneath was insulated by the new snow so the storm snow bond will improve very quickly. In the meantime, this new storm snow/storm slab will likely be reactive until the snow temperature balances.

Régions couvertes