Bulletin d’avalanche

Jasper

Mar 17 – 18, 2015Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

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

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    Soft slab conditions on lee alpine aspects appear to have bonded well in most locations. Approach these features with caution and test bonding on the slope from a safe area before committing.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    Large cornices or surface avalanches are the likely trigger for this layer.

Weather Forecast

The stable forecast with light winds, warm daytime temperatures and good overnight freezing will persist for a couple more days.  Snow is forecasted for higher elevations (above 2000m) and rain at lower elevations on Friday.

Snowpack Summary

A strong rain crust forms the surface at treeline and below. Up to 35cm of storm snow overlies a variable snowpack above treeline. Soft wind slabs have formed on lee aspects as a result of previous, strong SW winds. The deep persistent weakness (basal facets and depth hoar) make up the base of the snowpack.

Avalanche Summary

No new avalanches observed.

Confidence

Due to the number of field observations

Régions couvertes