Bulletin d’avalanche

Banff Yoho Kootenay

Feb 15 – 16, 2012Parks Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

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

The widespread surface hoar that sparkled in the sun last week has now been buried by 5-15cm of snow. In alpine areas affected by wind, soft slabs are touchy to skier loads. Pay attention to a change in the surface snow and avoid slabs.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Today in Yoho, we found soft slabs in alpine lee terrain, and were able to cut out small pockets on unsupported rolls. The slabs popped out quickly as they overlie surface hoar. Fast sluffing on surface hoar where the wind hasn't touched the slope.

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    2–3
    Strong winds from earlier in the month have created large cornices on lee (mostly easterly) aspects. Several large cornice collapses have been observed over the past week. These cornices could be a big enough to trigger a deep slab.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Régions couvertes