Bulletin d’avalanche

Jasper

Jan 6 – 7, 2013Parks Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Little change in weather and snowpack this weekend.  Cornice failure is a concern although we have not seen evidence as of yet.  Stay well back from corniced ridge lines.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    Wind slabs can be found above tree line in exposed terrain. These slabs have been unreactive to skier traffic, however, it is still possible to trigger a slab in steep unsupported terrain.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    Loose snow avalanches are likely on steep thin slopes and in gulley features. 

Weather Forecast

The weather on Sunday will be cloudy with snow flurries throughout the day producing light accumulation (5-10 cm).  Winds will be moderate to strong from the West and temperatures will be seasonable.

Snowpack Summary

The snowpack is faceting and losing strength especially in shallow areas.  At tree line and above, the mid-pack is generally supportive where the snow depth is greater than a meter.  Wind slabs are present in lee features at upper elevations. Surface hoar is developing with the cool overnight temperatures and light valley bottom winds.

Avalanche Summary

Avalanche patrols were conducted on both the Maligne Road and the Icefields Parkway.  No new avalanches were observed.

Confidence

Régions couvertes