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Avalanche Forecast

Nov 27th, 2018–Nov 28th, 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.

The forecast new snow has not arrived, but ongoing strong winds have likely loaded lee terrain enough to increase the avalanche danger.

Weather Forecast

The upper level flow switches from SW to Westerly through out the day Wednesday. SW winds persist, but only in the light-moderate range.  Alpine temperatures will drop from a daytime high of -4C to -12C as the skies clear into the evening.Click here for the Avalanche Canada mountain weather forecast.

Snowpack Summary

Strong SW wind and warm temps promoting fresh windslab development. The October 25 crust, sitting 0-40cm off the ground, remains a concern. This crust is most prevalent in deeper snowpack areas - found predominately on N-NE lee features. Faceting above and below this layer continues to weaken the lower snowpack.

Avalanche Summary

No recent activity has been reported, no field teams have been out since the weekend.  The local ski hill triggered two windslabs (one large/size 2) during explosive control work on Sunday.

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

Ongoing strong winds continue to build windslabs.
If triggered the wind slabs may step down to deeper layers resulting in large avalanches.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Deep Persistent Slabs

Most skiable slopes have this crust, assess the strength of this interface before jumping into any committing lines. See forecast details for more info on this layer.
Watch for whumpfing, hollow sounds, and shooting cracks.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 2.5