Archived

Avalanche Forecast

Apr 11th, 2014–Apr 12th, 2014

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

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

2: Moderate

The avalanche danger rating below treeline will be moderate

Regions: Banff Yoho Kootenay.

Avoid big alpine features until the spring cycle has has happened. Watch for solar input and daytime heating.

Weather Forecast

Freezing temperatures forecast for Saturday and Sunday may dip as low as double digits. 5 cm of accompanying light snow is expected.

Snowpack Summary

Deep instabilities may still be triggered in specific areas. Watch for thinner areas that may trigger depths over one metre. While rotten basal layers are not universal, they can still be found on different aspects. A change in wind direction to a more northerly flow may create small windslabs in the alpine.

Avalanche Summary

Small high altitude sloughing in lee areas and small solar releases in exposed aspects were noted.

Confidence

Freezing levels are uncertain

Avalanche Problems

Deep Persistent Slabs

Colder weather will add a little more stability to the snowpack. It is still too early to move out onto big alpine lines.

Be aware of thin areas that may propogate to deeper instabilites.Stay well back from cornices.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3