Archived

Avalanche Forecast

Nov 18th, 2011–Nov 19th, 2011

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

1: Low

The avalanche danger rating at treeline will be low

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

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Regions: Jasper.

A significant wind event is forecast to begin on Sunday as the cold air is replaced by a warmer wetter system. The avalanche hazard may rise.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable on Saturday

Avalanche Problems

Wind Slabs

An specific avalanche cycle occurred today from wind loading on steep (40-50 deg), SE slopes below ridge lines and on cross loaded features between 2600 and 2900 m. Avalanches up to size 3 were observed in this terrain along the Icefield Parkway.

Aspects: North, North East.

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Persistent Slabs

Slabs created by previous Moderate W to NW winds overlay weak basal facets. A large load (surface avalanche, numerous skiers on the slope) could possibly trigger this layer.

Aspects: North, North East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3