Avalanche Forecast

Issued: Nov 22nd, 2015 4:00PM

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

garth lemke, Parks Canada

Jasper.

Weather models are uncertain to the amount of snow arriving on Monday and Tuesday. A significant amount has potential to increase the danger rating.

Summary

Weather Forecast

10-20cm of snow may arrive starting Monday into Tuesday with winds shifting Northerly mid-storm and temperatures dropping. It will be clear skies, cold overnight temperatures, and Northeasterly winds the remainder of the week.

Snowpack Summary

Field observations in the Parkers area found snow depths vary between 10 to 140 cm. Extensive wind effect at TL and above giving supportive touring but limited ski quality out in the open. Where significant loading has occurred the snow remains stubborn and does not want to propagate.

Avalanche Summary

One possible unobserved skier remote, sz 1.5 seen Saturday on a slope in the Hilda-Destiny ridge area. A BTL steep rock slab feature in a cross-loaded gully. Forecasters are treating it as a anomalous event as no further naturals were observed.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Monday

Problems

Wind Slabs

Previous strong to moderate winds have formed wind slabs on cross-loaded and lee aspect slopes. They remain stubborn to trigger as no significant sliding layer exists underneath them.

Early season hazards such as rocks, trees and stumps are still visible.Be cautious as you transition into wind affected terrain.

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

Elevations: All elevations.

Likelihood

Unlikely - Possible

Expected Size

1 - 3

Valid until: Nov 23rd, 2015 4:00PM