Bulletin d’avalanche

South Rockies

Jan 22 – 23, 2013Avalanche Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

Thu
Fri
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–4
    Watch for isolated old stubborn and fresh touchy wind slabs below ridge crests, behind terrain features and in cross-loaded gullies.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain for the entire period

Weather Forecast

Wednesday: Mainly cloudy with isolated flurries picking up throughout the day. Moderate to strong southwesterly winds with freezing levels in valley bottoms. Thursday: Expect 5-10cm of new snow by the morning with cloudy skies and isolated flurries throughout the day, winds should ease off and freezing levels are expected to remain in valley bottoms. Friday: Cloudy with isolated flurries, light to moderate winds and freezing levels remaining in valley bottoms.

Avalanche Summary

Recent activity has been limited to isolated relatively harmless wet loose snow avalanches on sun-exposed slopes.

Snowpack Summary

In general, the region has a relatively shallow, faceted, and wind-affected snowpack that is well settled with progressively stiffer and stronger snow with depth. Large surface hoar growth and surface faceting continues in sheltered and shady areas, while sun-exposed slopes have been subject to melt-freeze cycles. Open unprotected areas are highly wind-effected with scoured areas, hard wind slab, sastrugi, and delicate cornices. All of these current snow surfaces will likely provide a poor bond once buried, and will be especially concerning when and where a sufficiently deep and cohesive slab develops.

Régions couvertes