Bulletin d’avalanche

Kananaskis

Feb 27 – 28, 2015Alberta Parks
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Archivé · expiré 12 years ago

Danger d’avalanche

Sun
Mon
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

We've hit an unusually stable period for late February! Remember that "low" hazard doesn't mean no hazard. Small avalanches are still possible in extreme terrain or isolated areas.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    Forecasters found variable windslabs in the alpine today. Small hard slabs were common near ridge lines. There are also a series of multiple slabs that are all laminated together in open areas. Inspect these interfaces as you travel.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–4
    This problem presents as a layer of depth hoar at the base of the snowpack. To get this going we need either a large trigger or to hit the shallow "sweet spot" while skiing. Steep, shallow areas with a hard slab on top should be treated with caution.

Confidence

Good

Weather Forecast

The alpine over night low will be -18 with light winds. Tomorrow will be a mix of sun and cloud. Alpine highs will be around -9 with a light north wind. No snow is expected. Freezing levels are predicted to be at valley bottom, but with the sun we can expect localized areas to have a higher freezing level.

Avalanche Summary

No activity today

Snowpack Summary

A few more cm's last night have added to the week's totals. Light winds last night have blown the new snow around creating insignificant storm slabs and exposing the underlying layers in many places. The alpine has variable wind slab distribution at the moment. In sheltered areas at treeline, there is an average of 20cm's on top of the Feb 16th crust. The crust itself has begun to break down with the cold temps. In most areas it does not effect the ski quality. The buried windslabs are well bonded and sit on top of depth hoar and facets. There are no changes below treeline, and no avalanche concerns at the moment.

Régions couvertes