Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Dec 27th, 2016–Dec 28th, 2016
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: Glacier.

Lots of skiers/boarders are hitting Rogers Pass these holidays. Watch for other groups, both above and below you, as skier-triggered avalanches could affect you.

Weather Forecast

10cm of snow today/tonight with light to moderate westerly winds and an alpine high of -10*C. Flurries on Wednesday, moderate SW winds, and freezing levels remaining in the valley bottom. Thursday should bring a juicier pulse of snow, with 15cm, moderate to strong SW winds, and freezing levels up to 800m.

Snowpack Summary

Storm snow from last week and incremental loading this week overlie a weak, facetted Dec 18th layer. This interface shows moderate to hard results in compression tests, but natural and skier triggered slabs on this layer have been observed the last couple of days. As this load settles into a stiffer slab, there may be more avalanche activity.

Avalanche Summary

A size 2 skier-triggered avalanche from steep, shallow, unsupported terrain yesterday resulted in a rescue from NRC Gully. A size 2 skier-triggered slab on the approach slope to Video Peak was reported from Sunday.

Confidence

Avalanche Problems

Persistent Slabs

The snow from the past week has been slow to form a slab in part due to continued cool temperatures and little wind. Slab properties are now starting to form and this is a concern, given the poor bond to the Dec 18th facet layer down 50-60cm.
Carefully evaluate terrain features by digging and testing on adjacent, safe slopes. Avoid unsupported slopes.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 3

Loose Dry

Plenty of unconsolidated powder lies on the snow surface. On steeper terrain, it has been observed to be moving fast and could push a person over a cliff.
Use caution above cliffs where small avalanches may have severe consequences.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2