Bulletin d’avalanche

Banff Yoho Kootenay

Apr 4 – 5, 2018Parks Canada
Voir sur la carte
Archivé · expiré 8 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

The cooler temps are maintaining the fantastic ski quality. Use caution on solar aspects where the recent snow is reactive to skier triggering on buried crusts.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Expect to encounter smaller windslabs on all aspects in the alpine due to previous shifty winds. They range from 20-40cm thick and have been decreasing in sensitivity over the last 24 hours.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Dig down to test the bond between the recent storm snow and the Mar 15 crust. Forecasters suspect faceting on the Mar 15 crust due to recent cold temps. Seems most sensitive with daytime heating allowing the surface snow to propagate as a soft slab.

Avalanche Summary

There was a skier remote size 2 just outside Lake Louise ski area boundary on an East to SE aspect yesterday. This avalanche failed on a buried suncrust down 20-40 cm and occurred in the afternoon. No other avalanche activity observed today.

Confidence

Forecast snowfall amounts are uncertain on Saturday

Weather Forecast

1-2cm on Thursday with light winds which will shift to the East early in the day. Temperatures will remain unseasonably cool until the weekend.

Snowpack Summary

Last weeks storm brought 15-40cm with moderate S and W winds creating wind slabs in the alpine. The March 15 suncrust is down 25-50cm on south-east through west aspects and has been sensitive to skier triggering over the last few days. The mid- pack basal layers have been dormant for the past while.

Régions couvertes