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Avalanche Forecast

Jan 5th, 2012–Jan 6th, 2012
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
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
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Jasper.

Up to 45 cm has fallen since Jan 1st with 35cm since yesterday. Winds were strong accompanying this storm. Give the new snow a couple of days to settle. Maligne lk rd and Icefields parkway are still closed and further avalanche control to occur.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Wind effect is extremely variable

Avalanche Problems

Storm Slabs

45cm since Jan 1st with 35cm since yesterday. Initially rain below 1500 m. Moderate SW winds at ridgetops promoting slab development.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 2 - 3

Wind Slabs

Windslabs present in all sheltered lee features, evaluate local wind effect.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

Cornices are large and precarious right now from winds and warm temperatures. Midpack strength is bridging this layer but the potential still exists if triggered, consequences would be severe.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4