Avalanche Forecast

Issued: Nov 14th, 2011 4:00PM

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

rupert wedgwood, Parks Canada

Jasper.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Wind effect is extremely variable on Tuesday

Problems

Storm Slabs

30cm of snow in the past 4 days with moderate Southwesterly ridge top winds is creating storm slabs on lee aspects. Two size 2 soft slab avalanches were recorded from Northeasterly facing alpine terrain.

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

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 3

Wind Slabs

Recent storm snow is adding load to previous wind slabs and increasing their sensitivity to triggering. Recently recorded avalanche activity is stepping down to ground.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Nov 15th, 2011 4:00PM