Bulletin d’avalanche

Kananaskis

Dec 30 – 31, 2020Avalanche Canada
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Archivé · expiré 6 years ago

Danger d’avalanche

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

Points saillants

Very good skiing can be found in sheltered areas. Be alert for wind slabs as you transition into the alpine.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1.5–2.5

    This wind slab if referring to the surface wind slab and the buried wind slab up to 40cm down. In steep and unsupported terrain, they could be sensitive to human triggering.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3.5

    Be extra cautious near steep rocky features where the facets overtop of the November 5 crust are more prominent.

Confidence

High -

Weather Forecast

Thursday is expected to bring moderate westerly winds in the alpine with a high of -7c. Skies will be a mix of sun and cloud with maybe the odd flurry.

Avalanche Summary

Skied up the Commonwealth drainage today and did not see any new avalanches in the valley or on our drive.

Snowpack Summary

Generally a strong snowpack. The alpine consists of a couple of generations of wind slabs. The first being the surface wind slabs(top 10cm) that have formed in the last couple of days. The second wind slab is below the surface one which goes down about 30-40cm which was formed during the strong variable Christmas winds. Approach alpine features with wind slabs on your mind. The Dec. 7 and Dec 15 layers are about 40 to 80cm down and are still identifiable but mostly unreactive. The November 5 crust is mostly a concern for triggering in steep shallow areas where the facets overtop of the Nov. crust are much more prominent

Terrain and Travel

  • Avoid areas where the snow feels stiff and/or slabby.
  • Avoid convexities, steep unsupported terrain and rocky outcroppings.

Régions couvertes