Avalanche Forecast

Issued: Feb 29th, 2012 4:34PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs and Loose Dry.

Landon Shepherd, Parks Canada

Jasper.

The Valentine's day surface hoar is still present in isolated sheltered lee features with burial depths ranging from 10cm to 75cm. Any significant new snow and wind will overload this weak layer.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain

Problems

Wind Slabs

At higher elevations, hard windslabs may be sitting on the Valentine's surface hoar. On southerly aspects, this surface hoar has formed on top of a sun crust. Slabs on these features could most easily be triggered on unsupported terrain features.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Loose Dry

Loose surface facets can be found on sheltered slopes at higher elevations. On steeper slopes, these are producing small loose avalanches that may have enough mass to knock over a skier or pry off an ice climber.

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

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 2

Valid until: Mar 1st, 2012 4:00PM