Archived

Avalanche Forecast

Nov 12th, 2011–Nov 13th, 2011

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

1: Low

The avalanche danger rating in the alpine will be low

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.

Skier accidental in the Lake Louise region today, see the bulletin for more details.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Due to the quality of field observations on Sunday

Avalanche Problems

Wind Slabs

Staff triggered 3 size 1 avalanches: one skier accidental and two by explosives in Paradise Bowl, Lake Louise (40 cm thick, 6-15 m wide, and ran up to 125 m). Watch for where the snow becomes slightly more cohesive from wind effect & snow depth.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Storm Slabs

After a brief reprieve, the WSW winds have returned moving the 15-20 cm of storm snow to lee features. Expect storm slabs to be reactive, especially if they sit on the hard slabs from last week's wind event.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2