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Archived

Avalanche Forecast

Jan 4th, 2013–Jan 5th, 2013
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
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.

Cornices are beginning to weaken and there have be a number of close calls in neighboring forecast areas.  Stay well back from corniced ridge lines.

Weather Forecast

Clearing overnight with clouds moving back in Saturday afternoon.  No precipitation is expected in the next 24 hours and winds will be light from the northwest. Seasonal temperatures are forecast, slightly cooler overnight.

Snowpack Summary

The snowpack is faceting and losing strength especially in shallow areas.  At tree line and above, the mid-pack is generally supportive where the snow depth is greater than a meter.  Wind slabs are present in lee features at upper elevations. Surface hoar is developing with the cool overnight temperatures and light valley bottom winds.

Avalanche Summary

No avalanches reported today though expect some loose snow sluffing on solar aspects.

Confidence

Avalanche Problems

Wind Slabs

Wind slabs can be found above tree line in exposed terrain. These slabs have been unreactive to skier traffic, however, it is still possible to trigger a slab in steep unsupported terrain.
Be cautious as you transition into wind affected terrain.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Loose Dry

Loose snow avalanches are likely on steep thin slopes and in gulley features.  Loose snow avalanches are possible on all aspects, however, solar triggering is most likely.
Be cautious of sluffing in steep terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2