Bulletin d’avalanche

South Rockies

Jan 5 – 6, 2013Avalanche Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–4
    Windslabs linger in high, exposed lee and cross loaded terrain. The changing winds may build new slabs in unusual locations.

Confidence

Fair - Intensity of incoming weather is uncertain

Weather Forecast

Sunday: A Mix of sun and cloud, with a chance of light flurries. Winds could turn Northwesterly with gusts up to 50 km/h. Temperatures should reach -5.Monday: Continued mixed skies with isolated flurries. Winds continue Northwesterly with stronger gusts and temperatures peak around -10.Tuesday: Cloudy with light snow. Winds slow and turn Southwesterly and temperatures should be steady around -10.

Avalanche Summary

Isolated sluffing continues. This issue is magnified by solar radiation on sunny slopes.

Snowpack Summary

Lots of snow depth and surface condition variability exists in the region. Hard windslabs can be found on North and East facing terrain due to previous moderate and strong South and West winds. The windward slope are hard pressed and in many locations scoured down to very shallow snow depths (or to rock!). In more sheltered areas, the cold nights have facetted the upper snowpack, leaving the surface snow soft. Surface hoar is growing in these sheltered locations as well. A sun crust has formed on steep South facing slopes.The mid pack is well settled and strong. This overlies one or two crusts (location specific) with the higher crust being as shallow as 70cm below the surface. Concern lingers (unlikely) for triggering a deep slab avalanche in a shallow snowpack area.

Régions couvertes