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Archived

Avalanche Forecast

Mar 21st, 2012–Mar 22nd, 2012
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
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: Banff Yoho Kootenay.

Minimal new snow, light winds, and cool temperatures in the next few days will not change the danger rating. There have been multiple close calls in the last few days in thin snowpack areas - use caution! See our FB page for pictures.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable

Avalanche Problems

Wind Slabs

Fresh wind slabs up to 50cm thick have been formed in the last 24h from strong W/SW winds. These will be sensitive to skier triggering in the lee of ridge crests.

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

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Persistent Slabs

Down 70-150cm, the Valentines surface hoar is producing harder shears and showing signs of rounding; however, several natural and skier triggered avalanches over the past few days show that this layer is still a concern.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3

Deep Persistent Slabs

Recent snow has covered up thin, scoured areas making them look appealing to riders. There have been multiple remote triggered avalanches in the Louise backcountry in the last two days in thin snowpack areas that have stepped down to the basal facets

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3