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Archived

Avalanche Forecast

Feb 8th, 2013–Feb 9th, 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
2: Moderate
The avalanche danger rating at treeline will be moderate
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Banff Yoho Kootenay.

Looks like a great weekend of weather ahead.  Bumped the treeline hazard up due to clear skies forecasted for Sunday & Monday may make any residual windslabs, if found, slightly more reactive in heat of the day.

Weather Forecast

A weak system passing tomorrow will bring cloud for Saturday, clearing in the afternoon.  Sunday should be clear and a northerly wind will help keep tempertures cool with alpine highs of -7.  The solar component is a consideration for climbers where it may cause localized sluffing off cliffs into gully features on steep solar aspects.

Snowpack Summary

Another light dusting of low density new snow overtop of wind slab (in alpine lee terrain) or previously facetted surfaces. East of the divide the mid-pack at treeline and below is well facetted but supportive to skiers. The early January surface hoar can still be found down 35-45 cm in some locations, but is proving unreactive to skier triggering.

Avalanche Summary

No recent avalanches reported or observed

Confidence

The weather pattern is stable

Avalanche Problems

Wind Slabs

Wind slabs from recent strong winds persist. In some areas these slabs are now covered by a light layer snow and may not be as obvious to see.  Areas of most concern are lee terrain near ridge tops and isolated treeline features East of the divide.
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 - 2