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Archived

Avalanche Forecast

Jan 17th, 2018–Jan 18th, 2018
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
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.

Wind and snow are in the forecast. The hazard levels assume we will get the forecasted weather.

Confidence

Moderate - Forecast snowfall amounts are uncertain on Thursday

Weather Forecast

The good news: Up to 10cm expected tonight, with another 9cm throughout the day tomorrow. The bad news: Strong winds overnight. Average ridge winds will be 60km/hr with gusts even higher.The rest: Overnight low of -5. Daytime high tomorrow of -4

Avalanche Summary

Nothing new today.

Snowpack Summary

Alpine winds have now created firm windslabs on Northeast to South aspects. They tend to be more pronounced in the northern part of the region. At treeline, the windslabs are widespread and are reaching far below ridge crests. The warmer temperatures have also contributed to settlement within the snowpack. The depth of buried weak layers will likely have changed significantly with the redistribution of snow.

Avalanche Problems

Wind Slabs

Strong winds and warm temps have combined to build widespread windslabs in the alpine & open treeline areas.
Avoid steep lee and cross-loaded slopesAvoid freshly wind loaded features.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1.5 - 2.5

Persistent Slabs

The new wind loading pattern will make this layer touchier than it has been.
Avoid open slopes and convex rolls at treeline where buried surface hoar may be preserved.Dig down to find and test weak layers before committing to a line.Avoid unsupported slopes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5