Avalanche Forecast

Issued: Feb 24th, 2014 12:55PM

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

robert hemming, Parks Canada

Glacier.

http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://bit.ly/1fj0THPWe are still at a heightened hazard rating due to buried crusts and surface hoar reactive to a humans weight as well as strong solar radiation today. Be diligent i you terrain selection until this layer has had a chance to heal.

Summary

Weather Forecast

An upper ridge of high pressure over the area will keep conditions clear and cold for the next few days

Snowpack Summary

1-1.5m of storm snow is settling into a cohesive slab over the Jan 28/22 facet/surface hoar/crust interface. Snowpack tests suggests this weak layer is difficult to trigger, but if failed has high propagation propensity. In addition, layers in the top 60cm of the storm slab are reactive and if triggered will likely step down to the Jan 28/22.

Avalanche Summary

One size 2.0 natural slab avalanche in the highway corridor east of the Rogers Pass summit yesterday . From Saturday a size 2.5 slab avalanche was observed around noon behind the Asulkan Hut.

Confidence

Problems

Persistent Slabs

Be aware of the potential for large, deep avalanches due to the presence of buried surface hoar.Use conservative route selection, choose moderate angled and supported terrain with low consequence.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible

Expected Size

2 - 4

Cornices

Pay attention to overhead hazards like cornices.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

2 - 4

Valid until: Feb 25th, 2014 8:00AM