Bulletin d’avalanche

Jasper

Feb 15 – 16, 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
1 · Faible

Points saillants

Backcountry ski terrain will be opening up in the Tonquin and around Marmot this Sunday. These areas have been untraveled and minimal snowpack information is available. Start conservatively until you gain confidence in the snowpack.

Problèmes avalancheux

  • Wind Slabs

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

    Continued Moderate SW winds are keeping the wind slabs touchy in lee features.  Sensitivity will vary with local loading and wind patterns.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    1.5–3

    Shallow snowpack areas and/or large triggers such as cornice failures could trigger this deep layer. The consequences would be severe!

Weather Forecast

There will be a cooling trend for the next  3 days with minimal snow expected. Monday, down to -18 and warming up again early next week.  Winds will be light from the West gusting to 45km/h.  The  freezing level will stay at valley bottom.

Find the Alberta Rockies weather synopsis here: Avalanche Canada Mountain Weather Forecast

Snowpack Summary

Continued SW winds continue building variable strength windslab and pronounced cornice development on Northerly aspects and cross loaded features treeline and above. A supportive mid-pack is bridging the deeper basal facets and depth hoar in some locations.

Average HS at treeline: ~180cm.

Avalanche Summary

An avalanche cycle to sz 3 on North aspects in the NE part of our Park was seen on a flight today.

Confidence

Régions couvertes