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Archived

Avalanche Forecast

Nov 27th, 2021–Nov 28th, 2021
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Kananaskis.

Sunday could bring a significant storm with lots of wind. Extensive wind slab development is likely at upper elevations. Avoid avalanche terrain.

Confidence

Moderate -

Weather Forecast

Sunday will see the arrival of a significant storm for the region. Up to 30cm of snow is possible with SW winds peaking at 125 km/h at mountain top. Freezing levels will be near 2000m. Monday could see an additional 15cm of snow with slightly slower wind speeds.

Avalanche Summary

No new avalanche were observed today.

Snowpack Summary

Moderate to strong winds continue to move snow around, especially at higher elevations. Alpine areas and open treeline terrain are heavily wind affected. Wind slabs are prevalent in lee and cross-loaded terrain, and the forecasted storm on Sunday will create fresh wind slabs. Thankfully the midpack and basal layers are uncharacteristically strong and dens for this time of year.

Terrain and Travel

  • Approach lee and cross-loaded slopes with caution.
  • Watch for areas of hard wind slab on alpine features.
  • Ice climbers should be equipped with avalanche safety gear.
  • Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.

Avalanche Problems

Wind Slabs

There will be several layers of windslabs on top of each other as this storm plays out. Within these layers there will likely be a weak, reactive layer to watch for.  

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Very Likely - Almost Certain

Expected Size: 1.5 - 2.5