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Archived

Avalanche Forecast

Dec 17th, 2020–Dec 18th, 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
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
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Kananaskis.

Steady winds have created new wind slabs to watch for. If the snow feels "cakey" beneath your feet or you punch through while walking, choose low angle terrain with no over head snow exposure.

Confidence

High -

Weather Forecast

A cloudy day tomorrow with nothing for significant snow. Temps will be in the -8 to -5 range with gusty winds from the west. Expect gusts of 30km/hr.

Avalanche Summary

No field trip today, and nothing was seen on the drive along the Spray valley.

Snowpack Summary

Our storm didn't pan out last night, but the winds sure did! Lots of transport today with new slabs at treeline and alpine elevations. As the slabs grow, the Dec 8th layer may become reactive. It all depends on the specific loading pattern. Expect the Dec 8th to be down anywhere from 20-50cm. 

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • If you are increasing your exposure to avalanche terrain, do it gradually as you gather information.

Avalanche Problems

Wind Slabs

Winds are finally starting to make some fresh windslabs out there. As these build they will become more reactive and have larger consequenecs to skiers and boarders. 

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5

Persistent Slabs

There seems to be lots of variability with this layer. As always, thin areas transitioning to localized wind loaded pockets will be more sensitive.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1.5 - 3