Archived

Avalanche Forecast

Mar 28th, 2012–Mar 29th, 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

2: Moderate

The avalanche danger rating below treeline will be moderate

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

2: Moderate

The avalanche danger rating at treeline will be moderate

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

2: Moderate

The avalanche danger rating at treeline will be moderate

Below Treeline

2: Moderate

The avalanche danger rating below treeline will be moderate

Regions: Banff Yoho Kootenay.

Incoming snowfall starting Thurs will elevate the danger rating. Today, 2 skiers remotely triggered a size 2.5 avalanche in the back-country near Lake Louise. This event is a reminder that the current conditions can still produce large avalanches.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain on Friday

Avalanche Problems

Persistent Slabs

At a test plot West of the divide the Feb 14 Surface hoar is buried 110cm. A deep tap test produced no result on this layer. However, the chance of triggering will increase in thinner areas, and large avalanches are still possible.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3

Wind Slabs

Starting Thurs, we are expecting snowfall amounts of up to 30cm in the alpine by the end of Fri. With associated westerly wind expect to encounter fresh wind slabs in lee areas.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3