Bulletin d’avalanche

Jasper

Dec 17 – 18, 2014Parks Canada
Voir sur la carte
Archivé · expiré 12 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Approach loaded, cross-loaded and re-loaded lee features with caution.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    These deep persistent slabs at tree line and sheltered alpine slopes may be triggered from shallow areas within the snowpack.

Weather Forecast

No significant change expected due to light winds, seasonal temperatures and no snow forecasted. Surface hoar is developing and may become the next weak layer in the snowpack once buried.

Snowpack Summary

A strong mid-pack overlies approximately 20-40cm of facets. Compression tests have produced variable hard results at the interface between the mid-pack and facets near the ground. Isolated wind slabs still exist in open areas at tree line and alpine elevations. The deeper instabilities are most susceptible to human triggering from shallow areas.

Avalanche Summary

Natural activity has slowed down but there is plenty of evidence of large deep slides in wind loaded features that have released in the last cycle.

Confidence

The weather pattern is stable on Wednesday

Régions couvertes