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Avalanche Forecast

Archived

Dec 15th, 2025–Dec 16th, 2025

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

Regions

Cariboos, Blue River, Clearwater, McBride, Premier, Quesnel, Sugarbowl, Clemina, North Monashee, Renshaw, Robson.

Stick to simple terrain, free from overhead hazard. Storm snow is expected to remain sensitive to human triggers, and buried weak layers may produce larger avalanches than you expect.

Confidence

Moderate

Avalanche Summary

On Sunday, naturally and human triggered slabs were reported to size 2 at treeline and alpine elevations. Observations are limited, a larger avalanche cycle may have occurred on the variety of weak interfaces in the snowpack.

On Tuesday, we expect natural activity to have tapered, but human triggering remains likely.

Snowpack Summary

Storm totals are expected to reach 40 to 70 cm by Tuesday morning. This adds to the 20 to 50 cm of rapidly settling snow from last week. Upper elevations are likely heavily wind affected, while treeline and below likely holds a surface crust from recent rain.

Reactive weak layers exist in the mid and lower snowpack, producing avalanches during the last 10 days of snowfall.

  • Surface hoar sits below the recent storm snow. Wide propagating, remotely triggered avalanches have been recently triggered on this layer, which appears to be widespread south of Highway 16 and spottier north of the highway.

  • A crust from mid November sits 90 to 130 cm deep, with faceted snow above.

Weather Summary

Monday Night
Mostly cloudy. 10 to 15 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1400 m.

Tuesday
Mostly cloudy. 1 to 3 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -6 °C. Freezing level 1100 m.

Wednesday
Mostly cloudy. 10 to 20 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 700 m.

Thursday
Mostly cloudy. 1 to 10 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -6 °C. Freezing level 600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be especially cautious as you transition into wind-affected terrain.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.

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.