Bulletin d’avalanche

Banff Yoho Kootenay

Dec 1 – 2, 2022Avalanche Canada
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Archivé · expiré 4 years ago

Danger d’avalanche

Sat
Sun
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Clearing skies and light wind will make for a nice day on Thursday. Keep in mind there is still uncertainty on how the persistent slab will react and triggering is still possible.

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2.5

    Recent snow and wind loading has created slabs over a persistent weak layer of facets, buried sun crusts, or isolated pockets of surface hoar. This slab has been sensitive to natural and human triggering.

Confidence

Moderate

Avalanche Summary

No avalanches were observed or reported on Wednesday.

Snowpack Summary

20-40cm of storm snow has accumulated over the past 7 days at treeline that has now settled into a slab overlying a mix of weak facets, surface hoar, or sun crust on steep south aspects (ie: very weak base). 40-80 cm of total snow exists at treeline throughout the region, with up to 120 cm in loaded alpine features.

Weather Summary

The light snowfall will taper with clearing skies on Thursday. Temperatures will remain around the -20 mark at the ridge and as warm as -8 in the valley. The wind is expected to be in the light range from the SW until Friday afternoon.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.

Régions couvertes