Bulletin d’avalanche

Jasper

Dec 29 – 30, 2020
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Archivé · expiré 6 years ago

Danger d’avalanche

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

Points saillants

Good skiing can be found in sheltered locations at all elevations. Remember, with moderate avalanche danger, human triggered avalanches are still possible. investigate and assess each slope before committing to the line.

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    In the alpine hard slabs sit overtop of facets. Dec 14th surface hoar to 6mm can be found in sheltered locations up to 2000m and is reactive to skier traffic.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1.5–3.5

    Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs or persistent slabs have the potential to step down to the weakness at the base of the snowpack.

Weather Forecast

A mix of sun and cloud on Tuesday with Alpine highs of -9

Wednesday will bring a small refresh of 5cm with light SW winds and Alpine highs of -10

Snowpack Summary

15-30cm of soft snow or dense wind-slabs location dependent over a generally firm mid-pack. Dec. Surface Hoar is down 40cm in isolated sheltered spots and reactive to skier traffic. An early season crust is down 40-100cm and decomposing. It overlies basal facets and depth hoar but is well bridged by the mid-pack above unless shallow location.

Avalanche Summary

No new avalanches observed with a road patrol to parkers.

Confidence

Régions couvertes