Bulletin d’avalanche

South Rockies

Nov 26 – 27, 2015Avalanche Canada
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Archivé · expiré 11 years ago

Danger d’avalanche

Sat
Sun
Alpin
Sans niveau
Limite forestière
Sans niveau
Sous la limite
Sans niveau
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Points saillants

Warming forecast for the next few days will increase the Avalanche Danger, especially at higher elevations. If you are out in the mountains, please post your observations to the MIN

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Recent storm accumulations have likely been redistributed into fresh wind slabs at higher elevations. Due to the irregular loading pattern, watch for wind slabs in unsuspecting locations.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    Unseasonably warm temperatures and sun will increase the chances of loose wet avalanche activity on steep, sun-exposed slopes in the alpine and at treeline.

Weather Forecast

The dry ridge of high pressure will persist throughout the forecast period bringing clear skies at higher elevations and cloud in the valleys. A layer of warm air aloft will develop on Friday and into the weekend with above-freezing temperatures expected above 1800m. Valley temperatures should remain below freezing. Ridgetop winds will remain mainly moderate from the northeast.

Avalanche Summary

No recent avalanches have been reported.  With warming forecast for the next few days, I would expect loose wet avalanche activity on steep, sun-exposed slopes. If you are out in the mountains, please post your observations to the Mountain Information Network.

Snowpack Summary

Snowpack observations have been very limited as the season commences. Initial reports suggest that there is enough snow above around 1700m for avalanches to occur. Around 10cm of recent storm snow sits on a thick rain crust which exists to at least treeline elevation. In exposed terrain at higher elevations, new winds slabs are expected to have formed and may linger for a few days until temperatures warm up. The stiff underlying crust may increase the likelihood of triggering a wind slab avalanche.

Régions couvertes