Avalanche Forecast

Issued: Apr 27th, 2012 4:00PM

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

a.l. horton, Parks Canada

Jasper.

A strong melt freeze crust overnight will provide excellent early day travel conditions. Expect this crust to deteriorate by early afternoon.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain on Saturday

Problems

Loose Wet

A good melt freeze crust should develop overnight Friday. Expect unstable isothermal conditions below treeline. Loose snow avalanches to size 2 are possible on steeper slopes by the afternoon under sunny skies.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible

Expected Size

1 - 2

Deep Persistent Slabs

Large triggers such as cornice failure could release large slab avalanches on several deep failure planes including ground, especially on steep slopes with a smooth rock slab bed surface.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 3

Valid until: Apr 28th, 2012 4:00PM