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Avalanche Forecast

Archived

Dec 16th, 2025–Dec 17th, 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 unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

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

Storm slabs will be more reactive in areas where wind has redistributed new snow over crusts.

Choose simple terrain and avoid overhead avalanche hazard.

Confidence

Moderate

Avalanche Summary

A large size 3 natural avalanche was reported in the southeast of the region on Monday. It was suspected to have released on the crust layer formed in mid November.

On Wednesday, we expect reactive storm slabs especially where storm snow is being redistributed by strong wind and forming slabs over a crust.

Snowpack Summary

Roughly 15 to 20 cm of storm snow will accumulate by mid-day Wednesday. This brings the total depth of unconsolidated new snow to roughly 40 cm.

This new snow will be redistributed by strong wind forming new slabs over a settled snowpack at upper elevations and a crust at lower elevations.

There are two layers in the mid and lower snowpack that we continue to track:

  • A surface hoar layer down 80 to 100 cm

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

Weather Summary

Tuesday Night

Cloudy. 10 to 15 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -4 °C. Freezing level 1100 m.

Wednesday

Mostly cloudy. 4 to 10 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -7 °C.

Thursday

Mostly cloudy. 4 to 10 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -6 °C.

Friday

Mostly cloudy. 5 to 10 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -9 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be especially cautious as you transition into wind-affected terrain.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.

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.