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Avalanche Forecast

Archived

Dec 23rd, 2025–Dec 24th, 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 and human triggered avalanches likely.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

South Columbia, Esplanade, Jordan, North Selkirk, Dogtooth, West Purcell, Badshot-Battle, Central Selkirk, Goat, Gold.

Additional snowfall and strong wind will increase the avalanche danger throughout the day.

Seek out slopes with soft snow and no slab characteristics for the safest riding.

Confidence

Moderate

  • Forecast precipitation (either snow or rain) amounts are uncertain.
  • Uncertainty is due to difficult to forecast freezing levels.

Avalanche Summary

On Monday, explosive control work in West Purcells produced several large loose dry avalanches (size 1.5-2.5 ) which failed within the recent storm snow on northerly alpine slopes.

Wind/storm slabs were also reactive skier-triggered on steep loaded rolls at treeline and above, producing small avalanches (size 1).

Snowpack Summary

80 to 110 cm of recent snow overlies a prominent hard crust formed in mid-December that extends up to 2300 m. Continued wind has redistributed the storm snow in exposed terrain at treeline and in the alpine.

Where the crust is thick and supportive, it effectively caps a few mid-snowpack instabilities, making them difficult to trigger. These layers, now over 150 cm deep, may still be a concern in the high alpine where the crust is thin or nonexistent.

Snowpack depth is around 230 cm at treeline, tapering with elevation below 1500 m.

Weather Summary

Tuesday Night
Mostly cloudy. 30 km/h south ridgetop wind. Treeline temperature -12 °C.

Wednesday
Mostly cloudy. 10 to 20 cm of snow. 50 km/h southeast ridgetop wind. Treeline temperature -3 °C. Freezing level 1500 m.

Thursday
Mostly cloudy. Up to 2 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Friday
Mostly cloudy. 20 to 40 cm of snow. 40 km/h southeast ridgetop wind. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Use ridges or ribs to avoid areas of wind-loaded snow.

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.