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Archived

Avalanche Forecast

Jan 13th, 2015–Jan 14th, 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
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
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

Stable forecast for the next few days but caution if the sun shows on solar aspects.

Weather Forecast

Snow flurries expected into Wednesday with up to 10 cm to arrive for Friday and more through the weekend.  A system will move through the forecast area bringing strong SW winds at the mountaintops (3000 m elevation) on Thursday moving any snow onto the lee aspects in Saskatchewan.

Snowpack Summary

The Dec 20 facet/surface hoar layer that was proving very sensitive appears to be bonding well to the crust below. Warming trend through Wednesday is still expected and should further settle the snowpack. The snowpack is still highly variable throughout the region ranging from rotten facetted areas to a good, well settled snowpack.

Avalanche Summary

No new avalanches reported. Overcast skies will prevent the solar effect that was originally expected for the area in the alpine.

Confidence

The weather pattern is stable on Wednesday

Avalanche Problems

Wind Slabs

Windslabs are easy to spot with no new snow as they appear  hard and are often convoluted.
Due to the lack of snowcover, patches of windslab will stand out and be easy to recognize.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Deep Persistent Slabs

Though this layer is unreactive to skier traffic it could be triggered with  a large load such as a cornice or a step down from another avalanche.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 1 - 3