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Archived

Avalanche Forecast

Nov 9th, 2012–Nov 10th, 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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Banff Yoho Kootenay.

Decent travel at higher elevations, lots of early season hazards below treeline. First cold snap coming up.... SH

Weather Forecast

Lows below -20C for next 2 days with highs around -15C.  On Sat. winds aloft East switching North.  Increased Westerly flow on Monday with a warming trend.  No snow and fairly clear Saturday, minimal snow Sunday, Monday.

Snowpack Summary

HS  approx. 50cm E of divide to 80cm W. of the divide. The Nov 6 crust ranges from a few cm to 10cm thick, generally more pronounced on S aspects with 20-40cm average on top. Except for isolated wind affected ridge features, there is a good bond to this layer. Surface facetting with cold temps.

Avalanche Summary

Wind slabs within storm snow 20-50cm thick (sz.1 not on Nov.6 crust, stubborn) triggered by ski cutting at Sunshine Village near lee ridge features. Similar results but on the Nov.6 crust in Lake Louise today.  None observed up hwy 93.N

Confidence

The weather pattern is stable on Saturday

Avalanche Problems

Wind Slabs

Wind slabs 20-50cm thick near lees of ridgecrests are sitting on the Nov.6 crust or within the storm snow above.  These are currently very isolated in nature.
Caution in lee and cross-loaded terrain near ridge crests.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2