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Avalanche Forecast

Archived

Dec 15th, 2025–Dec 16th, 2025

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 and human triggered avalanches likely.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
Below Treeline
Natural avalanches possible, human triggered probable.

Regions

Lizard-Flathead, Akamina, Flathead, Lizard, Moyie.

As you get above the rain crust, start thinking about storm slabs.

Lee areas in the alpine are the most dangerous.

Confidence

Moderate

Avalanche Summary

A few small wet loose avalanches were reported on Monday.

Snowpack Summary

Around 10 cm of snow sits over a widespread melt–freeze crust. Beneath this crust, the snow remains moist due to the recent warm and wet weather. Lower elevations are rain soaked and likely will develop a crust overnight.

The mid-snowpack is generally well-settled and well-bonded, sitting above a thick melt-freeze crust that makes up most of the lower snowpack.

Snowpack depths at treeline range from 80 to 150 cm and thin rapidly at lower elevations.

See this report for a good idea of conditions.

Weather Summary

Monday Night
Cloudy with 2 to 5 mm of precipitation as snow or rain at treeline. 80 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 2000 m.

Tuesday
Cloudy with 5 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1500 m.

Wednesday
Mostly cloudy with 35 to 45 cm of snow. 50 to 80 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1700 m.

Thursday
Mostly cloudy with 5 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -7 °C. Freezing level 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Start with simple terrain and gather information before committing to bigger features.

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.