Archived

Avalanche Forecast

Dec 18th, 2011–Dec 19th, 2011

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

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

2: Moderate

The avalanche danger rating below treeline will be moderate

Regions: Jasper.

With up to 35cm of storm snow in isolated locations, very little natural activity was noted and visibility was excellent. Don't be lulled into false sense of security as many slopes may be awaiting the human trigger.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Avalanche Problems

Deep Persistent Slabs

Basal facet collapses are still being noted in test pits yet layers are bridging well above. Caution likely shallow snowpack trigger zones.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3

Wind Slabs

Windslabs persist near exposed ridgetops and cross loaded gulleys.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Storm Slabs

Anywhere from 5-35cm of new snow fell Saturday evening. It appears to be bonding well as winds were light and temperatures warm when storm arrived. Winds are just now slabbing the storm snow.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2