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Avalanche Forecast

Archived

Dec 31st, 2025–Jan 1st, 2026

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

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Natural avalanches are unlikely but small, isolated rider triggerable wind slabs could exist.

Stepping out into big terrain with good travel habits and group management is appropriate.

Confidence

Moderate

  • Uncertainty is due to rapidly fluctuating freezing levels.

Avalanche Summary

On Tuesday numerous natural, wet loose avalanches up to size 2 were observed. These avalanches occurred in steep, rocky south facing terrain.

Snowpack Summary

Surface snow conditions are variable. On steep, sun-exposed slopes, a new crust is present and may soften with solar input. On north-facing slopes at treeline and above, 20 cm of wind-affected snow can be found.

The mid December crust is 150 to 250 cm deep. This crust is 30 cm thick and well bonded to the snow above.

In general, the snowpack is well settled and right-side up.

Weather Summary

Wednesday Night

Clear skies. 20 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2800 m.

Thursday

Mix of sun and clouds. 2 cm of snow possible at treeline. 20 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2100 m.

Friday

Mostly cloudy. 4 to 10 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1300 m.

Saturday

Cloudy. 10 to 30 cm of snow. 40 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to isolated wind affected features in the alpine, as well as cross-loaded features at treeline.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.