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Archived

Avalanche Forecast

Dec 4th, 2017–Dec 5th, 2017
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

Good skiing exists in sheltered areas near treeline.

Weather Forecast

As the week progresses the cooler air will be displaced to the east as a ridge of high pressure brings clear skies and elevates freezing levels. A strong inversion will develop over the next few days. Sadly no new precipitation is forecast. Overnight lows will be -12 and ridge top winds will be moderate from the NW. Thur freezing levels to 3,300m.

Snowpack Summary

Wind slabs in exposed lee features. A significant crust (black friday, Nov.23) can be found down 30 to 70cms. A persistent slab overlays this crust and so far the bond appears to be strengthening at this interface. The Halloween crust sits well down in the snowpack at TL locations and as high as 2700m.

Avalanche Summary

No new avalanches have been reported in the past 24 hours

Confidence

Freezing levels are uncertain on Wednesday

Avalanche Problems

Wind Slabs

Wind slabs are present on lee aspects. Bond strength of these slabs to the snowpack below is uncertain.
If triggered the wind slabs may step down to deeper layers resulting in large avalanches.Use caution in lee areas. Recent wind loading has created wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3