Lawinenlagebericht

Kananaskis

Dec 27 – 28, 2025Avalanche Canada
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Archiviert · abgelaufen 9 months ago

Lawinengefahr

Mon
Tue
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig

Kernpunkte

Excellent ski quality can be found where the wind hasn't blowen. Investigate new stormslabs and windslabs both buried and on the surface before stepping into terrain.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1.5–2.5

    Reverse winds will load abnormal slopes. Watch for skier triggerable windslabs in the upper snowpack.

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1.5–2.5

    Storm slabs were reactive with avalanche control today,

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    2.5–3.5

    The problem recently became to a Deep Persistent Slab. Avalanche in the upper snowpack may step down to this layer producing large avalanches.

Confidence

Avalanche Summary

Avalanche control took place on East end of Rundle and Mt. Buller. Soft slabs upto size 2.5 running far into runout paths.

Mt. Buller Southern path ran to the spray road putting roughly a meter of debris on the roadway.

Some natural activity was also noted in the hero's knob drainage and on Mt. Smuts South face.

Snowpack Summary

20-40cm zone dependant of snow fell overnight on the 26th with light to moderate SW winds.

Buried wind slabs and fresh windslabs from the snow over the past week are widespread in the alpine and on lee and cross-loaded features at treeline. Be sure to dig down an evaluate this potential and always be feeling with your pole and skis for that hollow feeling indicating you are on a supportive windslab. The November crust is now down 130-180cm, and is showing signs of faceting around this crust layer. Recent avalanches in the upper snowpack have stepped down to this interface producing large destructive avalanches.

Weather Summary

Saturday- Was a cold one. Sunny in the afternoon/evening with a slight increase in winds mid day.

Sunday- A mix of sun and cloud with a slight warming trend. A day time high of -10. Winds will be 40km/h out of the west at ridgetop elevations.

https://hpfx.collab.science.gc.ca/~fsg006/productviewer/ab/table/AB_Rockies_Forecast.html

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • Be mindful that deep instabilities are still present and have produced recent large avalanches.
  • Keep your guard up as storm slabs may remain sensitive to human triggering.

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