Avalanche Forecast

Issued: Jan 1st, 2015 8:09AM

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

Parks Canada percy woods, Parks Canada

http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://www.facebook.com/ParksMountainSafety/posts/768278099888848‎The Special Avalanche Warning has been extended.  The potential for human triggered avalanches on the December 17th surface hoar layer continues. Conservative route selection is advised.

Summary

Weather Forecast

Increasing cloud today with light snow and warming temperatures. Winds will be moderate S'ly shifting to moderate SW'ly through today and Friday with expected snow accumulations in the 10cm range by Friday evening.

Snowpack Summary

Cold temperatures continue to facet the surface layers of the snowpack. Winds have shifted from moderate N'ly to moderate S'ly resulting in widespread windslabs. The Dec 17th surface hoar layer is present down 50-70cm sitting on top of a thick rain crust below 2100m and settled midpack above. This layer is widespread and continues to be reactive.

Avalanche Summary

Skier and rider triggered avalanches were reported in the last 48hrs on the December 17th layer below Lookout Notch.  A recent size two slab avalanche was observed from a distance on the Balu headwall the trigger is unknown.

Confidence

Problems

Persistent Slabs

An icon showing Persistent Slabs
The December 17th surface hoar layer is still reactive.  Avalanches continue to be triggered even in locations previously skied. Some areas offer few clues of the instability but the potential for large avalanches continues.
Use conservative route selection, choose moderate angled and supported terrain with low consequence.Choose conservative lines and watch for clues of instability.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

1 - 3

Valid until: Jan 2nd, 2015 8:00AM