Bulletin d’avalanche

Kananaskis

Mar 5, 2019Alberta Parks
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Archivé · expiré 8 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Expect Tuesday's warm temperature and solar radiation to have an effect on steep solar aspects.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    These are getting better as the bond improves with the underlying layer and the cold air facets the snow. If they do react, expect them to auger in and bulldoze the midpack.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–1.5
    Mostly a problem in steep terrain, but we could start to see some solar triggered slides as well.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    1.5–3
    We are thinking this layer is becoming more reactive over time. As the slabs facet/weaken, the bridging effect will become less reliable.

Confidence

High -

Weather Forecast

Tuesday will see a relative warm spell! Only -22 in the morning with a high of -8. Light SE winds and of course, no snow.

Avalanche Summary

No new avalanches observed.  Avalanche control is planned on the Spray starting at 11:00am on Tuesday March 5, 2019.  This will occur between Three Sisters Dam(Spray West Campground turn off and Buller Day use).

Snowpack Summary

Cold, dry and often loose snow is the flavor of the month so far. We are still seeing windslabs near ridges and cross loaded areas, but these seem to loose there typical "cakey" character very quickly. Despite not having a traditional windslab feel to them, they could still react simply because the underlying layers are weak, aerated facets. As you get further down slope there is eventually no slab, or any true structure to the snow. In un-traveled areas, expect a weak, occasionally bottomless snowpack.  A big change in temperature and solar effect is expected for Tuesday.  It would not be surprising to see avalanche activity on solar aspects.

Régions couvertes