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

Avalanche Forecast

Dec 5th, 2013–Dec 6th, 2013
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
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.

Cold temperatures are the major factor effecting the snowpack today. The snowpack can be characterized as relatively shallow early season conditions with  a deep persistent basal  weakness. JBW

Weather Forecast

Keep your woolies. It will not really warm up until the weekend.

Snowpack Summary

Very cold temperatures mean not much active is happening in the snowpack. The surface and basal layers will continue to facet.

Avalanche Summary

No new activity. A full depth size 2 release on a steep planar NW feature at 2400m on Copper Mtn was observed yesterday. Likely northerly winds and cross loading across this slope with the coming of the arctic front were the trigger.

Confidence

Due to the number and quality of field observations

Avalanche Problems

Persistent Slabs

The basal weakness of depth hoar or crust is the major weakness in the snowpack and any avalanche will likely fail on, or step down to this layer. Triggering on steep open slopes is still possible.
Avoid open slopes with any steepness over 40 degrees.Avoid unsupported slopes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Wind Slabs

Recent storm snow was moved around by northerly winds and isolated wind slabs can be found on all aspects at and above treeline. Use caution  in steeper wind effected areas.
The new snow will require several days to settle and stabilize.Assess start zones carefully and use safe travel techniques.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2