Archived

Avalanche Forecast

Nov 29th, 2012–Nov 30th, 2012

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

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.

Weather Forecast

South westerly flow bringing only light snow showers to the area.

Snowpack Summary

Average snowpack depth at tree-line is 90-100cm. Snowpack stability tests show mod shears at storm snow interface down 30-40 cm, and mod to hard shears on the Nov 6th crust in the bottom third of the pack.

Avalanche Summary

No reported or observed avalanches today.

Confidence

Forecast snowfall amounts are uncertain on Friday

Avalanche Problems

Wind Slabs

Expect thin wind slabs in the alpine from moderate SW winds.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2

Persistent Slabs

The Nov 6 raincrust is down 50-90 cm. Although we have not seen any recent activity on this crust, this is still a significant layer in the snowpack. Evaluate this layer carefully prior to entering steeper/bigger terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3