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Avalanche Forecast

Archived

Jan 9th, 2026–Jan 10th, 2026

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

Regions

Coquihalla, Manning, Skagit.

Avoid lee areas where wind slabs are deeper and more dangerous.

Wind slabs are easily triggered during their formation.

Confidence

Moderate

  • Uncertainty is due to how the snowpack will react to the forecast weather.

Avalanche Summary

On Thursday, there was a skier-triggered wind slab near Zoa peak (see photos). It was triggered on a convexity and spread far across the slope. The skier was uninjured. Read the full report here.

On Wednesday, there was a report of a large storm slab (size 2) that released naturally from below a rock feature near the Coquihalla. It occurred on a south aspect at treeline.

Snowpack Summary

Strong to extreme wind is expected to redistribute soft snow in exposed areas. In sheltered terrain, there is around 30 to 60 cm of snow from earlier in the week.

The mid-December crust is 100 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

Friday Night
Partly cloudy. 50 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

Saturday
Mix of sun and clouds. Up to 10 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1400 m.

Sunday
Cloudy. 10 to 20 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

Monday
Mostly cloudy. 30 to 65 mm of precipitation as snow in the alpine and rain at treeline. 70 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out wind sheltered terrain below treeline where you can avoid wind slabs and find great riding.
  • Be careful as you transition into wind-affected terrain.
  • Wind slabs are most reactive during their formation.

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.