Archived

Avalanche Forecast

Feb 21st, 2012–Feb 22nd, 2012

Alpine

4: High

The avalanche danger rating in the alpine will be high

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Alpine

4: High

The avalanche danger rating in the alpine will be high

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Alpine

4: High

The avalanche danger rating in the alpine will be high

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Regions: Banff Yoho Kootenay.

The avalanche danger level has increased dramatically since the weekend. Now is the time for conservative route choices.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Due to the number and quality of field observations

Avalanche Problems

Storm Slabs

Up to 35 cm of settled storm snow overrides the Feb. 12 surface hoar. The surface hoar is wide spread and the storm snow is reactive to skier triggering. This problem is expected to get worse before it gets better.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 3

Wind Slabs

Strong north west winds forecasted for Tuesday night and Wednesday will create fresh wind slabs in the alpine. These slabs are expected to be reactive to skier triggering.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 3