Bulletin d’avalanche

Kananaskis

Mar 10 – 11, 2022Avalanche Canada
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Archivé · expiré 5 years ago

Danger d’avalanche

Sat
Sun
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Tomorrow will have increasing winds at all elevations. Watch for fresh wind loading. 

Problèmes avalancheux

  • Wind Slabs

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

    These will build quickly with the increasing winds tomorrow.

  • Persistent Slabs

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

    Carefully evaluate the bond with the Feb 19th crust down 40 to 60cm. Recent wind loading will make this problem more reactive, as will periods of intense solar input.

Weather Forecast

Another cold start for tomorrow. The overnight low will be -18, with a high of -8. Skies will be partly cloudy with westerly winds increasing throughout the day. Flurries are expected to start late in the day as well.

Avalanche Summary

Nothing new today.

Confidence

Moderate -

Snowpack Summary

Today's trip took us to the northern section of the Spray. Light alpine winds have formed thin wind slabs on all aspects. These seem reasonably well bonded, but in shallow areas they are more reactive. Treeline and below still feel quite settled with only localized windslabs being a problem. The crust is still the main concern and deserves respect as there are likely loose sugary facets on top of it. Solar aspects at all elevations should be evaluated. It is down 30-40cm now.

Terrain and Travel

  • Be aware of highly variable recent wind loading patterns.
  • Be alert to conditions that change with elevation and wind exposure.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.

Régions couvertes