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Avalanche Forecast

Nov 20th, 2018–Nov 21st, 2018
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
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.

Snowpack information for the high alpine is scarce, take a cautious approach and use a thorough assessment process if you venture into this terrain.

Weather Forecast

The current ridge of high pressure will hold until late Wednesday when a westerly flow will move in bringing light precip to the forecast region. Ridge winds will stay in the moderate range and treeline temperatures will fluctuate between -8 and 0. Click here for the Avalanche Canada mountain weather forecast.

Snowpack Summary

Strong winds have scoured ridges to bare rock in many places in the alpine. 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

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