Avalanche Forecast

Issued: Jan 7th, 2022 4:00PM

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

Tereza Turecka,

Jasper.

Strong to extreme winds expected to build hard slabs throughout the weekend.

Sheltered areas still have plenty of turns to offer. Alpine might not be the most pleasant place to be.

"It's windy, but at least it's cold"

Summary

Weather Forecast

Saturday: Precipitation: Trace. Alpine temperature: High -18 Â°C. Ridge wind southwest: 20 km/h.

Sunday: Precipitation: Trace. Alpine temperature: Low -17 Â°C, High -8 Â°C. Ridge wind west: 35 km/h.

Alpine temperature inversion. Monday: Precipitation: Trace. Alpine temperature: Low -11 Â°C, High -7 Â°C. Ridge wind southwest: 30 km/h. Freezing level at VB.

Snowpack Summary

Up to 10 cm of new snow and increasing winds contributing to wind slabs building in deposition zones. The mid-pack is supportive with a questionable interface (Dec 1st layer ) down close to 40cm, which has questionable reactivity below 1900m. Basal faceting continues near or on the ground.

Avalanche Summary

No new avalanches observed or reported today.

Confidence

Problems

Wind Slabs

Approximately 10 cm of new snow in the parkway area and steadily increasing winds shifting from SW to NW will contribute to wind slab development. Due to a shift in direction of the wind, expect wind slabs in unusual spots.

Variable winds may create pockets of wind slab in some unexpected locations.
If triggered the wind slabs may step down to deeper layers resulting in large avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2.5

Persistent Slabs

This layer is a rain crust up to 1950m and reactive to large loads. Typically this layer is down around 40cm.If you find this layer on your adventure, a MIN report would be helpful for us to track it.

Dig down to find and test weak layers before committing to a line.

Aspects: All aspects.

Elevations: Below Treeline.

Likelihood

Possible

Expected Size

1 - 2

Deep Persistent Slabs

Natural deep avalanches have not been reported in a while, yet it remains a low probability and high consequence event if you push your luck.

Pay attention to overhead hazards like cornices which could trigger the deep persistent slab.

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Unlikely

Expected Size

1.5 - 3

Valid until: Jan 8th, 2022 4:00PM