Archived

Avalanche Forecast

Feb 24th, 2012–Feb 25th, 2012

Alpine

4: High

The avalanche danger rating in the alpine will be high

Treeline

4: High

The avalanche danger rating at treeline will be high

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

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

3: Considerable

The avalanche danger rating in the alpine will be considerable

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.

10-20 cm forecasted for tonight with Mod-Strong SW winds will tip us into another avalanche cycle on the Valentine's surface hoar. Be very selective and conservative with route selections this weekend.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain

Avalanche Problems

Persistent Slabs

At treeline 40-50 cm of settled storm snow sits overtop of the Feb. 14 surface hoar, up to 80 cm in the sunshine region. Even if a feature has avalanched there is likely residual hazard since we haven't seen good cleanouts in what has gone.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 2 - 3

Wind Slabs

Moderate to strong winds in the few days have created touchy wind slab conditions on lee terrain in the alpine. We expect these slabs to be added to with a forecast of mod to strong SW winds and 10-20 cm tonight.

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

Elevations: Alpine.

Likelihood: Likely

Expected Size: 1 - 2