Avalanche Forecast

Issued: Dec 18th, 2017 4:00PM

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

jonas hoke, Parks Canada

Jasper.

The new snow will not bond well to old surfaces, expect the wind loaded pockets of accumulated snow to be reactive to the weight of a skier/climber.

Summary

Weather Forecast

A low pressure system coming in from the East on Tuesday will shift the winds to NE and bring some snowfall to the area. Temps will drop and we could see up to 10cm of snow.A ridge of high pressure will build in the wake of this system, giving mostly sunny skies, cold overnight temps and ongoing light N winds.

Snowpack Summary

5-10 cm of new snow has been redistributed by moderate SW winds. This overlies a variety of old surfaces: surface hoar up to 25mm in sheltered areas, a thin sun crust on steep solar aspects and wind hardened surfaces in exposed areas. The Halloween crust, buried near the snowpack base, remains as a layer worth tracking.

Avalanche Summary

Isolated pockets of wind slab in exposed areas were easily triggered, giving small size 1 avalanches.

Confidence

Forecast snowfall amounts are uncertain

Problems

Wind Slabs

Use caution above ledges and cliffs where small avalanches may have severe consequences.

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

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 1

Valid until: Dec 19th, 2017 4:00PM