Bulletin d’avalanche

Kananaskis

Nov 18 – 19, 2015Alberta Parks
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Archivé · expiré 11 years ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré

Points saillants

Up to 35cm of new snow over the past few days continues to add load to the snowpack.  Winds will be a critical thing to watch over the next few days as there is lots of snow available for transport.  Give the snowpack time to settle.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    2–5
    Watch for  buried windslabs as you move through the terrain.  Be especially cautious as you transition into more wind affected terrain at treeline.
  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Very Likely
    Taille
    1–3
    Power sluffing out of steep terrain is ongoing at this time.
  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    2–4
    New storm slabs and instabilities are developing with the recent influx of new snow. 

Confidence

Good - Wind speed and direction is uncertain

Weather Forecast

Temperatures are forecast to cool over the next few days with light to moderate winds out of the NW.  No new snow is forecast to fall (unfortunately) but we are way ahead of where we normally are for snow depths.

Avalanche Summary

Avalanche Control in the Buller and EEOR areas on Thursday produced mixed results.  Some areas the bomb produced only a hole and in other avalanches up to sz 2 were encountered.  There were also some areas (steeper terrain) wherein we observed a few loose dry avalanches up to sz 1. 

Snowpack Summary

An additional 35cm of new snow fell overnight along the Smith Dorrien.  At the Highwood pass region, 25cm of snow fell.  Winds were generally moderate out of the SW so we are seeing new windslabs and stormslabs build as we speak!  These new slabs are our main concern in the snowpack.  We really don't have a prominent persistent weak layer within out snowpack at this time but there still are significant weak layer at the interface with the recent new snow.  Buried windslab's are also a concern and backcountry users need to be curious about snowpack and where these concerns may be.  Expect to encounter these problems around ridgelines, and in gullied terrain at treeline and above.

Régions couvertes