Bulletin d’avalanche

Kootenay Boundary

Dec 3 – 4, 2016Avalanche Canada
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Archivé · expiré 10 years ago

Danger d’avalanche

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

Forecast snowfall amounts are highly variable for Saturday night with highest amounts expected in the south of the region. Pay close attention to how much snow falls in your riding area, and be prepared to back off to mellow terrain.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–2
    Strong winds and new snow forecast for Saturday night will add to an ongoing storm slab problem. High alpine terrain will likely be wind-affected, so the best and safest riding may be in lower-elevation, sheltered terrain.

Confidence

-

Weather Forecast

Saturday night and early Sunday morning: 10-25cm of new snow / Strong southwest winds / Alpine temperatures at -8.  Sunday: Light flurries with clearing skies in th afternoon / Light north winds / Alpine temperatures at -12. Monday: Clear skies / Light variable winds / Alpine temperatures at -12. Tuesday: Clear skies / Light north winds / Alpine temperatures at -16

Avalanche Summary

No recent avalanche observations have been submitted. Moderate SW winds and new snow could build new storm slabs on leeward slopes and behind terrain features. Pay attention to changing avalanche conditions especially at upper elevations.

Snowpack Summary

Early season snowpack observations are still very limited in the region, but the threshold for avalanches has been exceeded at treeline and in the alpine. Some areas below treeline are below threshold for avalanches with only the smoothest open slopes beginning to reach threshold. Fresh storm slabs are building with new snow and wind, and are expected to be most reactive in high elevation, wind-affected terrain. A thick melt-freeze crust from mid-November is down around 70 cm. Recent observations indicate the layer is generally well bonded to the adjacent snow; however, reports of sudden test results in the South Columbia region suggest we shouldn't write this layer off just yet. The snowpack below this is generally strong and well-settled.

Régions couvertes