Avalanche Forecast

Issued: Dec 10th, 2018 4:00PM

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

jasper snow safety, Parks Canada

Jasper.

The timing and intensity of this storm is still uncertain. Be aware of changing conditions through the day and expect the avalanche hazard to increase.

Summary

Weather Forecast

A series of cold fronts embedded in a north westerly flow will bring precipitation to the forecast region this week. The first system is expected to arrive Tuesday with 10-15cm of snow. Moderate North West winds will be associated with this front. Click here for a detailed mountain weather forecast from Avalanche Canada

Snowpack Summary

Incoming new snow will overlay a variaty of high pressure surface conditions such as facets, isolated surface hoar ,crusts and windslabs. The Oct 25th crust can be found as much as 30cm off the ground and likely encountered between 1800-2,700m. The snow cover below treeline is thin.

Avalanche Summary

No new avalanches observed today during a road patrol down highway 93. Remember to share the conditions found on your trip this week with Avalanche Canada's, Mountain Information Network

Confidence

Problems

Deep Persistent Slabs

Although currently dormant, it would be wise to assess the strength of the interfaces above & below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.

Ride slopes one at a time and spot for your partners from safe locations.Watch for whumpfing, hollow sounds, and shooting cracks.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1.5 - 2.5

Storm Slabs

Forecasted snow values will overlay a variety a weak surface forms providing a poor bond at the new snow interfaces. The timing and intensity of this storm is still uncertain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Dec 11th, 2018 4:00PM