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Archived

Avalanche Forecast

May 11th, 2018–May 12th, 2018
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Jasper.

Weather Forecast

Environment Canada for the Jasper Townsite

Snowpack Summary

Some snow still sticking around at treeline on northerly slopes. Deep persistent slabs are out on most aspects in the alpine and treeline. Large triggers, like cornices still lingering in many alpine areas. Isolated spring storms may create non persistent instabilities, like wind slabs, and sluffing.

Avalanche Summary

The spring avalanche cycle is in full swing with temperatures reaching 20 degrees. Large destructive avalanche are running from all elevations and aspects!

Confidence

Avalanche Problems

Loose Wet

Expect these avalanches to start early on all slopes where the seasonal snow persists.
If triggered the loose wet sluffs may step down to deeper layers resulting in large avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Very Likely

Expected Size: 1 - 2.5

Wet Slabs

Warm temperatures, solar radiation, and cornices falling; one, or a combination of these are acting as triggers and creating large destructive avalanches.
Avoid exposure to overhead avalanche terrain, large avalanches may reach the end of run out zones.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely - Very Likely

Expected Size: 1.5 - 3.5

Wind Slabs

Spring weather can often bring variable amounts of precipitation, localized winds, and rapid loading in alpine lee features.
If triggered the storm/wind slabs may step down to deeper layers resulting in large avalanches.

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

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 2