Avalanche Forecast

Issued: Apr 12th, 2012 4:00PM

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

steve blake, Parks Canada

Jasper.

Maligne road remains closed until noon on Friday. Watch for rapidly changing condition as the storm brings significant snow accumulations over the next 24 hours.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Intensity of incoming weather systems is uncertain on Friday

Problems

Storm Slabs

Significant snow accumulations are expected over the next 24 hrs. How this snow bonds to the widespread melt freeze crust formed on April 12 is the big question. Be sure evaluate the storm snow interface before committing to big slopes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Deep Persistent Slabs

These deeper layers can wake up unexpectedly. The forecasted storm snow may overload deep layer in some locations.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 4

Loose Wet

With cooling temperatures this problem will likely ease for the next few days. Remember that the sun is intense this time of year and can create isothermal conditions in short order. Rain at low elevations can also bring this problem to life.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Apr 13th, 2012 4:00PM