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Archived

Avalanche Forecast

Feb 5th, 2020–Feb 6th, 2020
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
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
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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.

Good skiing can be found in sheltered areas between 2000m and 2300m. The alpine has extensive wind slabs.

Confidence

Moderate -

Weather Forecast

Thursday and Friday's forecast are pretty much the same: A mix of sun and cloud with light westerly winds. Overnight lows of -11c and daytime highs of -6c in the alpine.

Avalanche Summary

No new avalanches observed today.

Snowpack Summary

Widespread wind slabs of varying thicknesses in the Alpine and open areas at Treeline. 5 to 10cm of recent snow overlies a thick and supportive rain crust at lower elevations. This crust disappears at 2050m. Look to sheltered areas between 2300 and 2000m for soft snow and good skiing. The wind slabs in the alpine still need some time to heal.  

Terrain and Travel

  • Avoid lee and cross loaded slopes in the alpine.
  • Be careful as you transition into wind affected terrain.
  • Be aware of the potential for large avalanches due to the presence of a deep persistent slab.

Avalanche Problems

Wind Slabs

Wind slabs of varying density are everywhere at upper elevations and range in thickness from 10 to 50cm. Human triggering is most likely in steep, convex and/or unsupported terrain.

Aspects: North, North East, East, South East, South.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1.5 - 3

Deep Persistent Slabs

This is the bottom 40cm of the snow pack (November crust/facet combo). There is potential for a surface wind slab to step down to this weak layer creating a very large slide.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3.5