Archived

Avalanche Forecast

Feb 28th, 2012–Feb 29th, 2012

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

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

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

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: Jasper.

Snow is expected on Wednesday that may overload the weak surface hoar layer that was buried on Valentine's Day. This layer is now up to 75 cm deep on south facing wind loaded features.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Wednesday

Avalanche Problems

Wind Slabs

Most open treeline and alpine slopes have wind slabs that may be sitting on the Valentine's Day surface hoar. On southerly aspects, this surface hoar has formed on top of a sun crust. Slabs on these features will be easily triggered.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 3

Loose Dry

20 to 40 cm of loose surface facets can be found on most sheltered northerly slopes. On steeper slopes, these are producing small loose avalanches that may have enough mass to knock over a skier or pull an ice climber off.

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

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2