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Archived

Avalanche Forecast

Jan 8th, 2013–Jan 9th, 2013
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Cariboos.

Variable snowfall amounts are expected across the region. Danger ratings are set for areas with strong winds and 20-30 cm snow overnight.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain on Wednesday

Weather Forecast

Tuesday night/ Wednesday: Strong SW wind. Alpine temperature near -8. 20-30 cm snow.Thursday: Light N wind. Alpine temperature near -12. No precipitation.Friday: Light W wind. Alpine temperature near -16. No precipitation.

Avalanche Summary

A couple of small (size 1-1.5) storm slabs were observed on Monday. The size and frequency of avalanches is likely to increase with storm snow and wind loading.

Snowpack Summary

New snow is developing into slabs, with a weak bond to old snow surfaces including surface hoar (at and below treeline) and facets. By Wednesday morning, storm snow totals could be 80-90 cm in some areas, leading to the potential for deep and destructive storm snow avalanches. In wind-affected areas, wind slabs have formed behind terrain breaks such as ridges and ribs. A strong mid-pack overlies a weak facet/crust layer near the base of the snowpack.

Avalanche Problems

Storm Slabs

Storm snow is building up over a weak interface with the old snow surface. Winds are also creating deep wind slabs behind terrain breaks such as ridges and ribs. Destructive avalanches are possible.
Stick to simple terrain and be aware of what is above you at all times.>Travel in avalanche terrain is not recommended without advanced training and extensive experience.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 6