Bulletin d’avalanche

Jasper

Mar 16 – 17, 2022
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Archivé · expiré 5 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Hard windslab present over a resistant Feb. interface down 20 - 50 cm and present on all aspects up to 2500m. Dig and assess bond before committing to large features.

Problèmes avalancheux

  • Wind Slabs

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

    Sculpted terrain features widespread in the Alpine and Treeline.

  • Loose Dry

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

    With up to 35cm of new snow, loose new snow could be an issue for ice climbers in tight gullies or steep cliffs above.

Snowpack Summary

Regionally variable HST values up to 35cm over the past 4 days atop a solid mid-pack. Alpine and exposed TL scoured and sculpted by steady SW winds. Hard windslab present in lee features. Feb 13 interface down 20-50, present as MFc on solar aspects or DF interface on polar aspects with resistant reactivity through the region.

Avalanche Summary

Tuesdays avalanche control highway 93 south produced up to size 1.5 wind slab averaging 30cm deep. A few size 1.5 dry loose observed in steep alpine terrain. Ski cut on an steep, unsupported feature in the Maligne range produced a size 2 on a hard wind slab.

Confidence

Weather Forecast

Thursday: Cloudy with scattered flurries.  5 cm. Temp: High -5 C. Wind SW: 15 km/h gusting to 45 km/h. Fzl: 1600 m

Friday: Mainly cloudy with isolated flurries. Trace new. Temps: Low -8 C, High -6 C. SW: 15 km/h gusting to 40 km/h. Fzl: 1400 m

Saturday: Mainly cloudy with isolated flurries. Trace. Low -6 C, High -4 C. Light winds. Fzl: 1800 m

Régions couvertes