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Avalanche Forecast

Archived

Dec 26th, 2025–Dec 27th, 2025

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

Regions

Cariboos, South Columbia, Blue River, Clearwater, Esplanade, Jordan, North Monashee, North Selkirk, Dogtooth, West Purcell, Badshot-Battle, Central Selkirk, Goat, Gold.

Continue to choose conservative terrain and give the storm snow time to settle.

We have some uncertainty in the potential for persistent slab avalanches after the recent storm.

Confidence

Moderate

  • Uncertainty is due to the fact that persistent slabs are particularly difficult to forecast.

Avalanche Summary

We expect a storm and wind slab avalanche cycle occurred on Friday, initial reports of natural avalanches up to size 2.5 have started to trickle in at the time of publishing.

On Thursday a few persistent slab avalanches, up to size 3 were observed. These avalanches released in the alpine and at upper treeline elevations, likely where the December 16 crust was thin or breakable.

Snowpack Summary

Up to 40 cm of new storm snow  has been redistributed by southerly wind into deeper deposits on north aspects.

70 to 110 cm of settling snow sits over a prominent crust formed in mid-December that extends up to 2300 m.  Where this crust is thick and supportive, it caps a few weak layers from December and November, making them difficult to trigger.

Weather Summary

Friday Night

Mostly cloudy. 4 to 10 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -14 °C.

Saturday

Mostly sunny. 20 to 35 km/h northwest ridgetop wind. Treeline temperature -19 °C.

Sunday

Mix of sun and clouds. 1 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -14 °C.

Monday

Mostly cloudy. 1 to 4 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -9 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Use ridges or ribs to avoid areas of wind-loaded snow.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

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.