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Archived

Avalanche Forecast

Nov 21st, 2013–Nov 22nd, 2013
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Jasper.

Early season avalanche conditions exist. Start into the winter with a cautious approach.

Weather Forecast

Wind and warming temperatures are expected through the weekend. Snow accumulations near the Columbia Icefield area may reach 10 cm by Saturday.

Snowpack Summary

A thin snowpack has been redistributed by recent winds. Observations from the roadside indicate there is a rain crust or temperature crust in the low alpine on north and east aspects. This has created a sliding surface for recent snows.

Avalanche Summary

Several  natural slabs avalanches have been observed along the Icefield Parkway.  Some of these are big (to size 3) and have propagated over hundreds of meters.

Confidence

Due to the quality of field observations

Avalanche Problems

Wind Slabs

Many lee and cross loaded features  have a soft slab condition. With the rising temperatures we expected to se continued natural avalanche occurrences.
Be careful with wind loaded pockets while approaching and climbing ice routes.Avoid cross loaded slopes at or above treeline.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 2 - 3