Boletín de aludes

Kananaskis

Feb 14 – 16, 2023Avalanche Canada
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Archivado · caducó 4 years ago

Peligro de aludes

Thu
Fri
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil

Lo esencial

The Kananaskis valley got up to 10cm of snow overnight while the Spray only saw a few cms. Cold temperatures are forecast overnight and we are not expecting any change in avalanche danger over the next few days.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2

    Open slopes at treeline and alpine areas look plump and ready for a trigger. Low angle terrain is still key.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–3

    Thin areas are where this layer will be easiest to trigger. Be thinking about wide propagations as the snowpack above is more cohesive than before.

Confidence

Moderate

Avalanche Summary

No new avalanches were seen or reported.

Snowpack Summary

Despite the heavy snowfall warning only a few cms of snow fell overnight and throughout the day on Wednesday. Eastern parts of the region saw a bit more snow with up to 10cm in the Kananaskis Corridor. Treeline and alpine windslabs continue to be the main avalanche concern in terms of "triggerability". They are improving with the the relatively warm temperatures, but still expect to find reactive pockets in steep and/or convex terrain. In terms of consequence, the dreaded Nov 5 facets still have a firm grip on the low probability/high consequence title. Some of our neighbours to the west have seen failures on this layer, which suggest loading is a critical factor in when this layer will fail.

Weather Summary

A cold night is forecast overnight on Wednesday evening with lows around -20C. Winds will slowly increase into the moderate range out of the NW and we may get another big dump of trace snow. (1-2cm)

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Be aware of the potential for surprisingly large avalanches due to deeply buried weak layers.

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