Bulletin d’avalanche

Little Yoho

Feb 27 – 28, 2022
Voir sur la carte
Archivé · expiré 5 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

More wind on the way as a Westerly flow moves into the region.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Wind slabs exist in the alpine and some tree line locations that may be possible to trigger in steep terrain. They are sitting on a variety of surfaces including old wind effect, surface hoar, sun crusts and facets.

Weather Forecast

A Westerly flow will bring increase cloud cover and strong winds to the region. Light precipe with minimal accumulation is expected by end of day Sunday. As the system continues to move East, snow fall amounts will increases with a total accumulation by Tuesday of 10-30cm. Freezing levels will climb to 1600m by Tuesday.

Snowpack Summary

Extensive wind effect in the alpine and some treeline elevations. 20-40 cm of soft faceted recent storm snow in sheltered areas over the Feb 15 interface. The Jan 30th surface hoar/sun crust layer is down 35 to 70 cm and variable in distribution and reactivity, producing hard sudden planar to no results in snowpack tests.

Avalanche Summary

On a flight over the forecast region Saturday several old avalanches from early last week were observed, this activity appeared to be a combination of wind slabs, storm slabs and loose dry. No NEW avalanches observed or reported Saturday.

Confidence

Régions couvertes