Avalanche Forecast

Issued: Feb 10th, 2012 4:00PM

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.

Garth Lemke, Parks Canada

Jasper.

Iceclimbers need to factor in the possibility of afternoon loose wet slides in your plans. Temperatures are cooling off the next few days but skies will remain sunny maintaining short wave energy input onto the snow surface.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable

Problems

Deep Persistent Slabs

A 2m fracture line was observed today. Despite these observations being sporadic, they are still occurring and should remain on your radar and factor into your decisions. They are limited to alpine features above 2600m and running far.

Aspects: North, North East.

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 them in isolated steep, wind loaded areas in the alpine.

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

Elevations: Alpine.

Likelihood

Unlikely - 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. Freezing level is reaching 1500m or higher by midday. Steep south alpine slopes continue to release naturally in the afternoon.

Aspects: North.

Elevations: All elevations.

Likelihood

Possible - Likely

Expected Size

1 - 2

Valid until: Feb 11th, 2012 4:00PM