Bulletin d’avalanche

Jasper

Dec 25 – 26, 2016Parks Canada
Voir sur la carte
Archivé · expiré 10 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

Scoured alpine terrain may push eager skiers to loaded gullies and lee terrain where the possibility of triggering windslabs exists. The Jasper Visitor Safety team wishes everybody a safe and happy holiday season!

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Strong winds have created a mosaic of snow depths across the landscape. These slabs will vary greatly in their triggering sensitivity requiring each slope to be evaluated carefully.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    The depth of this crust is now highly variable, and may be as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential.

Weather Forecast

The next light snowfall is expected to begin on Boxing Day, with light scattered flurries to wrap up 2016. The light Northerly flow will change to moderate Southwest winds with the next pulse of precipitation. Temperatures expected to rise from -20 to -12 with the new snow bringing in the new year.

Snowpack Summary

10 cm of fresh snow may be found in sheltered areas. Previous strong winds have built slabs in lee features, cross loaded gullies and added to the size of cornices. Weak layers include; buried surface hoar (Dec 11) in sheltered NE aspects around treeline (2100-2300m) and the Nov 12 crust approximately 30cm from the ground.

Avalanche Summary

No new reports or observations in the past 24 hours on road patrols in the Maligne Valley and Columbia Icefield Area.

Confidence

Régions couvertes