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Archived

Avalanche Forecast

Mar 15th, 2014–Mar 16th, 2014
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
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

Regions: Kananaskis.

Up to 30cm of new snow is forecast to fall with strong westerly winds.  Watch for increasing avalanche danger throughout the day on Sunday.

Confidence

Fair - Intensity of incoming weather systems is uncertain on Sunday

Weather Forecast

A system is expected to cross over the region tonight and into the day tomorrow.  Up to 30cm of new snow is forecast to fall with strong westerly winds. 

Avalanche Summary

No new natural avalanche activity. 

Snowpack Summary

Not much change over the course of the day today.  Melt freeze crusts on solar aspects to the peaks, and widespread temperatures crusts below 1900m.  Most alpine terrain is wind affected with widespread wind slabs and isolated wind slabs at treeline.  The 0211 interface is down 70-100cm at treeline and continues to produce moderate to hard shears that are sudden planar in nature.

Avalanche Problems

Persistent Slabs

This persistent weak layer is buried 70 to 100cm in Alpine and Treeline areas and is sensitive to human triggering.
Choose the deepest and strongest snowpack areas on your run.>Be aware of thin areas that may propogate to deeper instabilites.>

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 5

Wind Slabs

New wind slabs will build with the incoming storm.  Carefully evaluate the bond with the new snow and the underlying surface.  The previous windslabs that developed earlier in the week will be hard to see under the new snow so use caution.
Choose well supported terrain without convexities.>Avoid convexities or areas with a thin or variable snowpack.>Avoid lee and cross-loaded terrain near ridge crests.>Avoid freshly wind loaded features.>

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 4