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Avalanche Forecast

Archived

Dec 4th, 2018–Dec 5th, 2018

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Glacier.

As the avalanche hazard is gradually decreasing remain diligent with your terrain and snowpack assessment, gathering information before stepping out into complex terrain.Leave enough time at the end of the day to make a safe exit before it gets dark.

Weather Forecast

An upper ridge is deflecting any organized weather system from reaching our region. This is allowing a cool arctic air mass from the North to slip Southward, spreading cold and dry conditions over BC. Cloud with sunny periods for the day with an alpine high of -13 with light Westerly winds. Cold temps and clearing skies for the week.

Snowpack Summary

Surface hoar is growing in sheltered areas while a thin sun crust exists on steep solar aspects. 40cm of snow covers another surface hoar or sun crust layer and can be found at all elevations. Winds have created a soft slab on this layer in specific lee or cross-loaded features. The October crust near the ground may be poorly bonded. 

Avalanche Summary

A report of a size 2.0 skier accidental from the lookers right of Youngs Peak occurred two days ago, originating in steep rocky terrain. The crown was estimated at 40-50cm deep and about 50m wide terminating in lower angle terrain. No new avalanche observations from backcountry users yesterday.

Confidence

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.