Avalanche Forecast

Issued: Dec 4th, 2016 4:00PM

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

garth lemke, Parks Canada

Jasper.

Temperatures are about to move into the frigid range for this week.

Summary

Weather Forecast

Flurries, cold temperatures, and light NW winds Monday. Tuesday-Thursday will be arctic cold, sunny, and light Northerly winds. No new snow until Friday.Â

Snowpack Summary

Ridge-top snow transport and cross loading occurring Sunday. 10-20cm new snow drainage dependent adding further load and wind transport. Wind slabs 50+cm on some open features at TL and above. Nov 12 crust is exposed in open Alpine features on the windward side and down 40 to 70cms or more in the lee. Temperature gradient promoting facetting.

Avalanche Summary

Sunday's Icefield's patrol observed several loose dry activity on solar aspects. 2300 to alpine small windslabs 24-48 hrs old. Visibility was in and out.

Confidence

Wind effect is extremely variable

Problems

Wind Slabs

This condition would be found mainly on open lee slopes or cross-loaded gullies. Avoid traveling through or underneath these features.

Avoid steep lee and cross-loaded slopesAvoid travelling in areas that have been reverse loaded by winds.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Valid until: Dec 5th, 2016 4:00PM