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Archived

Avalanche Forecast

Nov 21st, 2018–Nov 22nd, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Jasper.

With new snow and wind, assess the strength of the snowpack before committing to skiing. 

Weather Forecast

A small storm in forecast to arrive Thursday morning bringing 8-10cm of snow and moderate SW winds. Daytime treeline temperatures will hover around -5C.  Click here for the Avalanche Canada mountain weather forecast.

Snowpack Summary

Around 10cm of snow and moderate SW winds forecast starting Thursday morning. The Oct 25 crust is 2-4cm thick and down 60 to 80cm with facets above and below it. Hard sudden collapse failures have been observed immediately below this crust in test profiles. Early season hazards lurking beneath the shallow snowpack remain a concern.

Avalanche Summary

Dry loose snow avalanches up to size 2 were observed over the weekend from steep solar terrain in the alpine.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Thursday

Avalanche Problems

Deep Persistent Slabs

Assume all skiable slopes have this crust, and assess the strength of the interface before jumping into any committing lines.
Watch for whumpfing, hollow sounds, and shooting cracks.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 2.5

Wind Slabs

New snow and wind will create windslab in lee features.
If triggered the storm/wind slabs may step down to deeper layers resulting in large avalanches.Use caution in lee areas in the alpine and treeline. Recent storm snow has formed wind slabs.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2