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Archived

Avalanche Forecast

Nov 26th, 2017–Nov 27th, 2017
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
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.

Cooler temps, light snow and strong winds are on the way.  Careful evaluation of the snowpack is advised as it is different at each elevation.  We are dealing with the October 17 crust, the Halloween crust and the November 23 crust.

Confidence

Moderate -

Weather Forecast

Expect 10cm, cooler temps and strong winds for Sunday night going into Monday.

Avalanche Summary

No new avalanches observed and lots of evidence of slides from the recent rain event.

Snowpack Summary

5-10cm moist snow overlying 10cm thick Nov 23 raincrust up to 2400m.  Above 2400m, approx 50-70cm of dense snow overlying the Oct. 31 crust.  Expecting fresh windslabs in lee features and gullies.

Avalanche Problems

Wind Slabs

Expect windslab development in lee and cross loaded gullies.
Avoid freshly wind loaded features.Use caution in lee areas. Recent wind loading has created wind slabs.

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

Elevations: Alpine.

Likelihood: Likely

Expected Size: 1 - 2

Persistent Slabs

We are still concerned for this layer overlying the Halloween crust. Expect it to be intact and reactive at upper elevations.
Watch for areas of hard wind slab in steep alpine features.Be aware of the potential for wide propagations.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 3