Avalanche Forecast

Issued: Apr 9th, 2012 4:51PM

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

steve blake, Parks Canada

Jasper.

Spring conditions will prevail this week. There is good ski quality on north aspects. Be aware of the effect of the sun and that natural slab avalanches continue to be regularly observed.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable

Problems

Loose Wet

Expect a higher probability of naturally occurring moist avalanches in and around steep gullies, and rocks, during the heat of the day. These loose snow avalanches have the potential to trigger windslabs and deep slabs.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible

Expected Size

1 - 3

Deep Persistent Slabs

These deeper layers can wake up unexpectedly. Natural avalanches continue to fail on deep layers. Profile Saturday found Feb14 surface hoar buried 80cm, unreactive yet present.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 4

Wind Slabs

Slabs are present on exposed slopes and steep gully sidewalls. A significant wind slab release was noted Friday off Mt Kitcheners ridge facing the Icefields center. It was 50cm deep, 38 degrees or less in places, and ran a fair distance.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 3

Valid until: Apr 10th, 2012 4:00PM