Bulletin d’avalanche

Jasper

Feb 6 – 7, 2016Parks Canada
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Archivé · expiré 11 years ago

Danger d’avalanche

Sat
Sun
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
1 · Faible
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Points saillants

Yo-yo laps on your favorite BTL line will be the best way to enjoy the new snow.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    New wind slab forming on lee and cross-loaded terrain. This is in addition to wind slabs up to 80cm thick formed during the storm at the end of last week.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    35cm of storm snow from last week has formed a slab overlying a weak facetted snowpack. Field teams have found decomposed surface hoar with sudden planar test results in isolated locations at tree line. This is the key interface to assess.

Weather Forecast

Snow, heaviest overnight and through Saturday morning with 10+ cm possible.  This storm is coming in hard and fast with moderate and strong S-ly winds. Temps dip into Sunday and then a significant warming trend into early next week.

Snowpack Summary

Buried and new wind slab formed at tree-line and above on North-Easterly aspects below ridge crests and cross-loaded terrain. These slabs are loading a weak and facetted mid-pack that has a layer of concern down about 60cm at the interface between old facets and new snow. Isolated pockets of decomposing surface hoar at tree-line down 40cm.

Avalanche Summary

No new avalanches reported

Confidence

Wind effect is extremely variable

Régions couvertes