Bulletin d’avalanche

Glacier

Mar 20 – 21, 2022
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Archivé · expiré 5 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

Quality winter snow is preserved on north-facing slopes, but be wary of freshly formed wind slabs in the alpine!

Problèmes avalancheux

  • Wind Slabs

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

    Moderate to strong South winds have created fresh windslabs in alpine lees.

  • Persistent Slabs

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

    Although natural avalanche activity has tapered, the Mar 11th suncrust has proved sensitive to skier triggering on steep solar slopes this past week.

    Small surface hoar from Mar 7th may also be lingering on Northerly aspects.

Weather Forecast

A weak transient ridge sets up today, but will be ousted by another system on Tuesday.

Tonight: Flurries, trace accumulations. Low -9*C, Freezing level (fzl) 800m. Moderate SW wind.

Mon: Flurries (trace), low -9*C, high -5*C, fzl 1600m, mod SW wind

Tues: Flurries (4cm), high -1*C, fzl 1800m, mod SW wind.

Snowpack Summary

Approx 15cm of new snow fell in the last 24 hours with convective cells around the park. The Mar 11th suncrust is buried 50-70cm, and in some locations has weak, sugary snow around it. On shaded aspects, spotty small surface hoar may be buried down ~70cm (March 7), down 90cm (Feb 26), and >1m (Feb 15).

Avalanche Summary

Several natural slab avalanches occurred from steep paths in the highway corridor, with an average size of 2.5; they occurred in the last 24 hours and were triggered by the consistent strong south winds.

On Friday, there was a report of a skier involvement in a size 2 slab avalanche in steep terrain in Puff Daddy failing on the Mar 11th suncrust.

Confidence

Freezing levels are uncertain

Régions couvertes