Avalanche Forecast

Issued: Nov 11th, 2018 4:00PM

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

jonas hoke, Parks Canada

Jasper.

Early season hazards due to the shallow snowpack (skiers) and thin, newly formed ice (climbers) remain a primary concern.

Summary

Weather Forecast

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for the Avalanche Canada mountain weather forecast.

Snowpack Summary

The Oct. 25th crust/facet combo remains the main concern. This layer is buried an average of 20 to 50cm, and is present on most slopes with sufficient snowpack for safe skiing - we expect this layer to linger for sometime. The snowpack below treeline is mostly below threshold depths for avalanche activity.

Avalanche Summary

Last week the Oct 25th layer produced some large natural avalanches (up to size 2.5) throughout the Rockies from as far south as Kananaskis Country, north to Yoho, the Icefields, Jasper and Marmot Basin Ski Hill.

Confidence

Intensity of incoming weather systems is uncertain on Tuesday

Problems

Deep Persistent Slabs

Best to assume all skiable slopes have this layer, and assess the strength of this interface before committing to a line.

Watch for whumpfing, hollow sounds, and shooting cracks.Carefully evaluate terrain features by digging and testing on adjacent, safe slopes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2.5

Valid until: Nov 12th, 2018 4:00PM