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Avalanche Forecast

Dec 3rd, 2014–Dec 4th, 2014
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
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: South Columbia.

Obvious signs of avalanche danger may be decreasing, but the snowpack remains capable of producing surprisingly large avalanches.

Confidence

Fair - Forecast snowfall amounts are uncertain on Saturday

Weather Forecast

Thursday: Cold and cloudy. Light flurries at most. Light winds. Friday: Light snow.  Remaining cool. Winds increasing to moderate SW Saturday: Light to moderate snow. Strong SW winds. Temperatures increasing. An inversion (warmer temperatures at ridge top than in the valleys) may form.

Avalanche Summary

No new avalanches have been reported, although the November persistent weaknesses continue to be our primary concern. Avalanche activity on these deep layers is expected to be less frequent, although the potential consequences of a release continue to be severe.

Snowpack Summary

Fluffy low density snow overlies a variety of surfaces which may include wind slabs at higher elevations and a hard rain crust that extends to about 1900m. Approximately 100cm below the surface you'll likely find weak crystals which formed throughout early and mid-November. These weak crystals include facets on a hard rain crust, and surface hoar (which may also sit on a crust on steep southerly slopes). Recent "pops and drops" snowpack test results suggest the layers can still be human triggered, and if triggered, are capable of producing wide propagations and large avalanches.

Avalanche Problems

Persistent Slabs

Up to 1m of recent storm snow overlies weak crystals. Obvious signs of avalanche danger may be decreasing, but the snowpack remains capable of producing surprisingly large avalanches.
Be aware of the potential for large, deep avalanches due to the presence of buried weak layers.>Conditions may have improved, but be mindful that deep instabilities are still present.>Caution around convexities or areas with a thin or variable snowpack.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 5