Bulletin d’avalanche

Kananaskis

Dec 12 – 16, 2022Avalanche Canada
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Archivé · expiré 4 years ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré

Points saillants

As expected, today's field trip offered no change in our confidence. Keep those tails tucked and avoid exposure to bigger terrain. Its an odd year and it will require patience to wait until it improves.

Problèmes avalancheux

  • Wind Slabs

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

    Small alpine slabs will likely trigger slabs at treeline. There is potential for full depth avalanches right now.

  • Persistent Slabs

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

    Where the surface snow is dense enough to form a slab, the Nov 25 and 16 layer are reactive to skier traffic. Remote triggering is possible.

Confidence

High

Avalanche Summary

Nothing new today.

Snowpack Summary

For such a shallow snowpack, we sure do have a lot to say about it! Right now we basically have 3 layers of concern. The upper half ranges from low density snow below treeline to reasonably stiff windslabs at treeline and above. The trouble starts with a thin layer that sits almost exactly at the mid pack line. It seems to be a different layer type from area to area, but it is consistently bad. Whether it's surface hoar or facets doesn't really matter. Regardless of the grain, its a touchy layer that is reliably failing with little to no load. Not great news right now. The bottom half of the snowpack is a thick layer of facets which also spells trouble. Lots of whumphing and cracking during our travels today.

Weather Summary

Overnight low of -20 with a day time high of -8. Clear skies for most of the day, with no snow expected. Ridge winds will be light to moderate out of the north.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be especially cautious as you transition into wind affected terrain.
  • Avoid convexities, steep unsupported terrain and rocky outcroppings.
  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
  • Remote triggering is a concern, watch out for adjacent and overhead slopes.
  • Watch for areas of hard wind slab on alpine features.

Régions couvertes