Avalanche Forecast

Issued: Nov 17th, 2017 8:06AM

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

Parks Canada percy woods, Parks Canada

Avalanches now have the potential to run to valley bottom in places like Connaught Creek.

Summary

Weather Forecast

Moderate W'ly winds gusting to strong along with continued precipitation are forecast for today. Moderate gusting to strong wind from the SW are expected through the weekend. This will lead to continued storm slab formation and more touchy avalanche conditions.

Snowpack Summary

Upwards of 50cm of storm snow in the last 48hrs in addition to the storms of earlier this week. This rapid loading has lead to widespread storm slab formation at and above treeline. The Halloween crust is down around 70cm and the November 9th and 13th interfaces will be found in the top 70cm. Snowpack thins quickly below 1700m.

Avalanche Summary

Five avalanches to size 2.0 recorded off of Mt MacDonald in the last 24hrs. Slides to size 2 reported off Cheops running onto the fan on Wednesday.

Confidence

Problems

Storm Slabs

An icon showing Storm Slabs
70cm+ covers the November 9th interface. The storm slab will need a few days to bond to old snow surfaces. The storm slab is going to be a problem to watch out for coming into this weekend.
The new snow will require several days to settle and stabilize.Minimize overhead exposure during periods of heavy loading from new snow, wind.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1 - 3

Valid until: Nov 18th, 2017 8:00AM