Avalanche Forecast

Issued: Jan 2nd, 2012 4:00PM

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

Garth Lemke, Parks Canada

Jasper.

A warm front on Wednesday will possibly bring freezing levels up to 2000m, strong winds, and some new snow. This may test our existing problems especially at lower elevations.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

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

Problems

Wind Slabs

Variable windslabs continue to develop from moderate-strong gusting winds. These slabs appear unreactive with relatively little natural activity yet assume touchy pockets exist such as steep gullies or unsupported slopes. Choose conservative tracks.

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

Elevations: All elevations.

Likelihood

Possible

Expected Size

1 - 3

Deep Persistent Slabs

On Sunday, large cornice drops triggered this layer proving the lurking danger of this weakness. Full path avalanches remain possible. Caution initiating the windslab problem that could step down.

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

Elevations: All elevations.

Likelihood

Unlikely - Possible

Expected Size

2 - 4

Valid until: Jan 3rd, 2012 4:00PM