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Avalanche Forecast

Archived

Dec 6th, 2017–Dec 7th, 2017

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

Regions

Cariboos.

Seek the shade for the best riding and least sun-baked snow.

Confidence

Low - Due to the number of field observations

Weather Forecast

THURSDAY: Sunny with valley cloud. Light wind. Freezing level near 3100 m with a colder air layer in the valleys. FRIDAY: Sunny with valley cloud. Light wind. Freezing level near 3000 m with a colder air layer in the valleys. SATURDAY: Cloudy, with a few flurries possible. Moderate south-west winds. Freezing level near 2000 m. More details can be found on the Mountain Weather Forecast.

Avalanche Summary

No recent avalanches have been reported. Last weekend, small loose dry avalanches were reported in steep terrain around Valemount and Blue River, but no human-triggered avalanches were reported. Please submit your observations to the Mountain Information Network (MIN).

Snowpack Summary

Intense warming is melting upper snowpack layers, particularly on steep sunny slopes. Warming also has the potential to wake up more deeply buried weak layers which formed during November's rainfall. We have limited information about the nature of these buried crusts. Below treeline, the snowpack is shallow--look out for early season hazards like open creeks and tree stumps.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.

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.