Bulletin d’avalanche

Banff Yoho Kootenay

Nov 11 – 12, 2012Parks Canada
Voir sur la carte
Archivé · expiré 14 years ago

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
Sans niveau
Ouvrir la carte complète

Points saillants

Travel is generally good, but it is still early season and the consequences of even a small ride could be very serious.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    Wind slabs 20-50cm thick near lees of ridgecrests are sitting on the Nov.6 crust or within the storm snow above.� These are currently very isolated in nature, but can be found on all aspects due to the easterly winds.

Weather Forecast

Cold temps will last for one more day before a weak NW to Westerly shift will bring some light precipitation and milder temperatures for Monday

Snowpack Summary

Facetting and slow storm snow settlement with cold temps. The November 6 crust is weak above 22000m but more developed at lower treeline elevations. I Isolated wind slabs in open areas.

Avalanche Summary

A large deep slab  avalanche was observed on the N Face of Mt.Haddo near Lake Louise that likely failed on old firn snow. This avalanche was a 3 and occurred on Wed., but shows that in the right location in the alpine things may not be so stable. 

Confidence

Intensity of incoming weather systems is uncertain on Monday

Régions couvertes