Avalanche forecast

Banff Yoho Kootenay

Feb 27 – 28, 2022
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Archived · expired 5 years ago

Avalanche danger

Mon
Tue
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low

Highlights

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

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    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 60 cm and variable in distribution and reactivity, producing moderate sudden planar to no results in snowpack tests.

Avalanche Summary

A remote cornice failure triggered a size 3 avalanche in Kootenay National Park on Wednesday. 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

Regions covered