Avalanche Forecast

Issued: Feb 24th, 2012 4:00PM

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

mike eder, Parks Canada

Jasper.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain

Problems

Wind Slabs

Soft slabs 10-50cm overlay a buried surface hoar layer. This layer will produce a natural avalanche cycle with more snow load. Avalanche control on 93 produced several size 2 soft slabs that started in the middle of the slope at treeline.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Deep Persistent Slabs

Increased loads with wind or new snow may awaken this instability. Size 2 surface slab avalanches may step down to this layer producing much larger avalanches.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood

Unlikely

Expected Size

2 - 4

Valid until: Feb 25th, 2012 4:00PM