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Avalanche Forecast

Archived

Dec 3rd, 2018–Dec 4th, 2018

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

Regions

Cariboos.

With limited field observations, uncertainty reigns in the Cariboos. Check out the latest forecasters' blog here for more information and advice on managing current conditions.

Confidence

Moderate - The weather pattern is stable

Weather Forecast

MONDAY NIGHT - Cloudy with clear periods / light westerly winds / alpine low temperatures between -10 and -15TUESDAY - A mix of sun and cloud / light to moderate west to northwest winds / alpine high temperature near -10 WEDNESDAY - A mix of sun and cloud / light variable winds / alpine high temperature near -10, low temperature near -14THURSDAY - Sunny with cloudy periods / light south to west winds / alpine high temperature near -5, low temperature near -10

Avalanche Summary

No new avalanches have been reported. There are currently very few field observations from within this region. Please post your observations to the Mountain Information Network. (MIN)

Snowpack Summary

There may be some lingering wind slabs in exposed, alpine terrain, but the primary concern in the snowpack is a weak layer of surface hoar (feathery crystals) and sun crust on steeper south facing slopes. This layer is down 30-70 cm. The surface hoar is most prominent at treeline, but it may exist in sheltered alpine areas.At the base of the snowpack is a crust that formed in late October. There have been no reports of reactivity on this layer in the Cariboos, however, this layer may be reactive in isolated locations such as steep, rocky terrain, with a shallow snowpack. Small avalanches could have the potential to step down to this crust resulting in large, destructive avalanchesSnowpack depths decrease dramatically with elevation where rocks, stumps, and open creeks remain significant hazards.There are limited snowpack observations within this region, so it is critical to supplement this information with your own observations.

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.