Bulletin d’avalanche

Jasper

Dec 2 – 3, 2012Parks Canada
Voir sur la carte
Archivé · expiré 14 years ago

Danger d’avalanche

Sun
Mon
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

Snow accumulations will vary greatly across the forecast area. Pay attention to windloading if windspeeds increase into the moderate range in the afternoons.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    A natural avalanche was "heard"  originating on steep unskiable terrain on a predominantly Northeasterly aspect in Hilda creek area. Pay particular attention to steep unsupported wind loaded slopes in the alpine.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    A persistent facetted weakness can be found around a mid-pack crust. There is low likelihood of natural avalanches occurring on this layer but we are watching as each small system deposits more snow load.

Weather Forecast

Light snowfalls will continue through Tuesday in the icefields area with accumulations up to 30+cm.  There will be less snow accumulations around the Jasper townsite.

Snowpack Summary

Hard test results were found at treeline on facets sandwiched between the two crusts in the icefields area. The crusts are deteriorating in this area.  Windslabs continue as the main concern. Winds had shifted to more Southerly flows by late afternoon.

Avalanche Summary

Poor visibility prevented any observations but an avalanche was heard in the Hilda creek area originating from steep unskiable alpine terrain which has a Northeasterly aspect.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Régions couvertes