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Archived

Avalanche Forecast

Apr 16th, 2012–Apr 17th, 2012
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: Banff Yoho Kootenay.

Best skiing will be found on North aspects at higher elevations. We likely need another major melt then freeze to bring larger alpine southerly features into shape.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain on Tuesday

Avalanche Problems

Wind Slabs

Wind slabs up to 40 cm thick are reactive on old sun crusts. Yesterday, skiers remote triggered a 2.5 on a SE asp of Jimmy Simpson. Some steeper slopes (Mt. Hector) a 30-50 cm thick windslab over weak snow on ice - monitor snow depth as you travel.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 3

Loose Wet

Very little activity today, a reasonable freeze last night and cloudy skies kept crusts intact. Tomorrow expect some sunny breaks, which may be enough to break down the crusts causing some loose wet avalanches on solar aspects below treeline.

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

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2

Deep Persistent Slabs

Watch out for thin & steep areas and large loads such as cornice failure which could trigger deep weaknesses. Thin areas are veiled by the new snow. Pay attention to snow distribution and depth as you travel.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3