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Avalanche Forecast

Dec 17th, 2017–Dec 18th, 2017
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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

Regions: Cariboos.

Snow amounts are gradually accumulating over a variety of potential weak layers.

Confidence

Moderate - Intensity of incoming weather systems is uncertain on Monday

Weather Forecast

MONDAY: Mainly cloudy with isolated flurries / Light to moderate west wind / Alpine temperature -9 TUESDAY: Cloudy with sunny periods / Light to moderate east wind / Alpine temperature -10 WEDNESDAY: Cloudy with sunny periods / Light north wind / Alpine temperature -15 

Avalanche Summary

No new avalanches were reported within this region on Saturday. If you have any observations, please submit them to the Mountain Information Network (MIN).

Snowpack Summary

10-20cm of new snow accumulating Friday through Sunday evening sits on a wide variety of old surfaces including large surface hoar (weak, feather-like crystals), hard crusts formed by sun or wind, and sugary facets. As the snow load builds and slab properties develop, it will be important to monitor how the new snow is bonding to the old surfaces. Most concerning would be areas that have surface hoar sitting on top of a hard crust.  A crust which was formed by rain in late November is a major feature in the snowpack and is down approximately 60-80cm at tree line elevations. Snowpack tests suggest the snow above is currently bonding well to it. Snowpack depth decreases rapidly below tree line. Look out for early season hazards such as rocks, stumps, and open creeks.

Avalanche Problems

Storm Slabs

As new snow accumulates expect it to become reactive to human triggering
Watch for whumpfing, shooting cracks, or signs of recent natural avalanches.Be cautious as you transition into wind affected terrain.Buried surface hoar may be preserved on open slopes and convex rolls at and below tree line

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2