Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Jan 1st, 2015–Jan 2nd, 2015

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Glacier.

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.

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

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.