Avalanche Forecast

Issued: Feb 11th, 2012 4:13PM

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

mike eder, Parks Canada

Jasper.

A slight increase in the afternoon temperatures on Sunday may contribute to more avalanches on solar aspects.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable

Problems

Deep Persistent Slabs

Solar radiation has led to small Loose snow avalanches starting in the high alpine and stepping down into the basal facets on solar aspects. Cornice failure on NE aspects could also step down into the basal facets.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

2 - 4

Wind Slabs

The majority of the windslabs are bonding well, but there remains the potential to trigger isolated slabs in steep, wind loaded areas in the alpine. Assess terrain cautiously.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 3

Loose Wet

Large temperature swings from -20 at night to +2 during the day has us in a melt freeze cycle on south aspects. Steep south alpine slopes continue to release naturally in the afternoon.

Aspects: North, North East, East.

Elevations: All elevations.

Likelihood

Possible - Likely

Expected Size

1 - 2

Valid until: Feb 12th, 2012 4:00PM