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

Avalanche Forecast

Feb 2nd, 2012–Feb 3rd, 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
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
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: Banff Yoho Kootenay.

Strong solar radiation and warm p.m. temp's will cause instabilities on south aspects, as well as weaken cornices at ridge tops. Inversions (cold valley-bottoms and warm alpine bowls) are expected, so pay attention to how warm it feels as you ascend.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable

Avalanche Problems

Wind Slabs

Recent strong SW winds have created windslabs up to a metre thick on lee slopes in the alpine (primarily N- E aspects). Although these slabs are starting to settle out with warm temps, it is still possible for a skier to trigger these slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 3

Cornices

The warm alpine temp's forecasted may be the straw that broke the cornice's back. If cornices do drop onto lee slopes, it could be a heavy enough trigger to step down into the basal facets. Several natural cornice avalanches were observed today.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 2 - 4

Persistent Slabs

In many areas east of the divide where the snow is shallower the mid-pack overrides a layer of weak basal facets. Be extra cautious of thin snowpack areas where the chance of triggering this layer is highest.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 2 - 4