Bulletin d’avalanche

Banff Yoho Kootenay

Nov 19 – 20, 2013Parks Canada
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Archivé · expiré 13 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    Fresh wind slabs exist at treeline and alpine elevations. These wind slabs are susceptible to human triggering. 

Weather Forecast

Another 10-15 cm of snow is expected at treeline elevations on Monday night. Tuesday will see a clearing and cooling trend with winds switching to the northwest. Cool, dry conditions forecasted for the end of the week.

Snowpack Summary

Another 5-15cm of new snow today with moderate to strong W winds in the alpine and intense wind transport up high. 25-40cm of recent storm snow now sits over a facetted base. Above 2400m the Oct 27 melt freeze crust exists near the base of the snowpack and continues to provide a good sliding layer.

Avalanche Summary

In upper elevations over the past few days there has been several skier and explosive controlled wind slab avalanches up to size 1.  In addition there has been some smaller natural activity reported on lee alpine terrain.

Confidence

Régions couvertes