Avalanche Forecast

Issued: Nov 25th, 2013 8:02AM

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

Parks Canada ali haeri, Parks Canada

Warmer temperatures up high today, caution on solar aspects.The winter permit system comes into effect tomorrow. Click here: Winter Permit Information, for further details.

Summary

Weather Forecast

High pressure ridge continues to dominate the weather pattern over the province. There's currently an inversion with temperatures expected to increase into the positive values at higher elevations. No precipitation expected in the next days.

Snowpack Summary

Upper snow pack continues to facet with a sun crust on south aspects. The November 12 surface hoar layer is down 50-110cm and is variable in size and distribution.

Avalanche Summary

No new avalanches.

Confidence

Due to the quality of field observations on Monday

Problems

Persistent Slabs

An icon showing Persistent Slabs
A surface hoar layer is buried down 50-110cm. Riders can trigger this layer from shallow snow pack areas with large consequences. Caution in areas at higher elevations that are planar and which have not previously slid.
Dig down to find and test weak layers before committing to a line.Avoid convexities or areas with a thin or variable snowpack.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 3

Valid until: Nov 26th, 2013 8:00AM