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Archived

Avalanche Forecast

Dec 4th, 2015–Dec 5th, 2015
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Jasper.

Careful consideration of your ski line or ice climb approaches is required where surface hoar may be present, especially in sheltered areas at TL and below.

Weather Forecast

Continued snow expected through the weekend with up to 30 cm accumulated by Sunday night. Mod to strong SW winds with warm valley bottom temps cooling with elevation.

Snowpack Summary

10cm new (and more on the way) over a well settled snowpack at treeline and below. In the alpine and TL, strong SW winds will redistribute the new snow on the lee aspects. The distribution of the surface hoar that formed during last week's inversion is widespread but is most likely best preserved on sheltered north aspect slopes.

Avalanche Summary

No new activity reported

Confidence

Forecast snowfall amounts are uncertain

Avalanche Problems

Storm Slabs

Up to 20 cm of snow expected through the weekend with mod SW winds will build storm slabs on top of a well developed surface hoar layer. Sheltered northerly aspects are likely areas where this surface hoar is most prevalent.
Use caution in lee areas in the alpine and treeline. Recent storm snow has formed touchy slabs.Avoid open slopes and convex rolls at and below treeline where buried surface hoar may be preserved.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2