Avalanche Forecast

Issued: Nov 16th, 2011 4:00PM

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

Garth Lemke, Parks Canada

Jasper.

Snow warning for 15cm for Yellowhead and Hinton but not Jasper. Uncertain whether system will infiltrate into Jasper's region.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

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

Problems

Storm Slabs

Soft to hard slabs up to 40cm thick can be found in gullies and lee terrain. The condition is less prevalent at Treeline. Observed a couple of size 2-3 natural avalanches scrubbing to ground in the Icefields on steep alpine features near ridgetops.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 3

Wind Slabs

Moderate W and NW winds are slowly adding load to the slab features which have weak basal crystals. Some whumphing was observed in the Bald Hills possibly failing on surface hoar layer 25cm down. Alpine snowpack depths are variable.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

2 - 3

Valid until: Nov 17th, 2011 4:00PM