Avalanche Forecast

Issued: Mar 10th, 2012 4:12PM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is moderate. Known problems include Persistent Slabs, Wind Slabs and Storm Slabs.

mike eder, Parks Canada

Jasper.

Sunny periods may occur between weather systems. IF the sun comes out for an extended time, the avalanche danger will increase on southerly aspects in the alpine and treeline. The sun will also contribute to isothermal conditions in valley bottoms.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Problems

Persistent Slabs

Recent natural avalanche activity has declined but this snowpack weakness remains very touchy and easily collapses with skier presence. Expect to see more activity when the windslabs and storm slabs begin to stiffen above this layer.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 4

Wind Slabs

Snowflurries have deposited over 30cm in the last 2 days in the icefields area. SW winds are creating new wind slabs primarily in the alpine and exposed treeline locations.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Storm Slabs

As these slabs settle and stiffen, they will produce small slides that will step down to the persistent buried surface hoar layer.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 3

Valid until: Mar 11th, 2012 5:00PM