Avalanche Forecast

Issued: Apr 29th, 2012 4:00PM

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

a.l. horton, Parks Canada

Jasper.

Mild rainy weather for the next few days will increase the avalanche hazard especially treeline and below.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Intensity of incoming weather systems is uncertain on Monday

Problems

Loose Wet

Expect a moderate melt freeze crust to form Sunday night that will deteriorate rapidly with the warm rainy conditions forecast for Monday. Loose snow avalanches are possible below treeline if we receive heavier than predicted showers.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Deep Persistent Slabs

Large triggers such as cornice failure or serac fall can trigger very large avalanches. Recently, ice fall released a large slab avalanche on a steep north facing glacial slope on Mt Andromeda.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood

Unlikely - Possible

Expected Size

2 - 4

Valid until: Apr 30th, 2012 4:00PM