Bulletin d’avalanche

Jasper

Feb 22 – 23, 2020Parks Canada
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Archivé · expiré 7 years ago

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré

Points saillants

There are dramatic differences in the snowpack from the Icefields to Whistler creek areas. Whistler area is significantly less supportive to skiers and one large avalanche was triggered by skiers four days ago off Indian Ridge. Use caution!

Problèmes avalancheux

  • Wind Slabs

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

    Wind slabs are widespread through the region with new and previous loading in lee features. Sensitivity will vary with local loading and wind patterns. Winds continue to blow strong. 

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1.5–3.5

    Triggering could occur from shallow snowpack areas or from large loads such a cornice failure. The consequences of triggering will likely be severe!

Snowpack Summary

Variable strength windslab on most surfaces treeline and above. Solar crusts on steep South aspects up to 2200m. Pronounced cornice development on northerly aspects and cross loaded features treeline and above. The mid-pack is bridging the deeper basal facets and depth hoar in some locations but there is allot of variability.

Avalanche Summary

No new avalanches reported from field team in the Circus valley near Portal creek. 

Confidence

The weather pattern is stable

Weather Forecast

Saturday will be a mix of sun and cloud with isolated flurries, 5cm of snow overnight, -8 C, and West winds 15 km/h gusting to 45 km/h. Sunday will bring 7 cm of snow, and -15 to -5 C with light winds.

Find the Alberta Rockies weather synopsis here: Mountain Weather Forecast

Régions couvertes