Archived

Avalanche Forecast

Jan 15th, 2012–Jan 16th, 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

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

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

Regions: Jasper.

Cold temperatures may lock down the snowpack in the short term. Cornice fall is a real concern as it has proven that the basal facets are still susceptible to triggering by large loads.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable on Monday

Avalanche Problems

Cornices

Cornices have developed above wind-loaded features. Several avalanches (size 2 to 3) have been triggered by both human-caused and natural cornice fall. These large loads have released slopes down to the basal facets in the alpine.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely - Very Likely

Expected Size: 2 - 4

Deep Persistent Slabs

Large loads (large cornice fall) have been able to trigger this weakness recently on fatter wind-loaded slopes in the alpine.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 4

Wind Slabs

Moderate to Strong Northerly winds have developed extensive wind slab on lee slopes and have cross loaded gulley features. A stiff wind slab is present on almost all slopes. There may have enough mass in these slabs to release the basal facets.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3