Avalanche Forecast

Issued: Apr 20th, 2012 4:25PM

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

mike eder, Parks Canada

Jasper.

Extended sun and warm temperatures will cause the avalanche danger to rise in the afternoon. Start and finish your trip early.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

on Saturday

Problems

Wind Slabs

Up to 10cm of warm snow is being redistributed by gusting SW winds and forming windslabs on NE to E slopes. Expect Saturday's sun to produce some activity from this recent snowfall.

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Loose Wet

Saturday's sun should produce loose snow avalanches on solar aspects. Expect some more of this activity on Sunday with warm temperatures and freezing levels up to 3000 meters.

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

Elevations: All elevations.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Deep Persistent Slabs

This layer may be triggered from a thin spot. Loose snow slides may step down to this layer in the warmest part of the day.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

2 - 4

Valid until: Apr 21st, 2012 4:00PM