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Avalanche Forecast

Archived

Jan 9th, 2026–Jan 10th, 2026

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

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Avoid avalanche terrain.

The combination of ongoing snowfall, strong wind, and a persistent weak layer means avalanches are very likely.

Confidence

Moderate

  • Uncertainty is due to the fact that persistent slabs are particularly difficult to forecast.
  • We are confident the likelihood of avalanche will increase with the arrival of the forecast weather.

Avalanche Summary

On Wednesday, explosive control in the inland side of the region produced avalanches up to size 3. These avalanches released on a variety of layers including the facets in the lower snowpack. These avalanches entrained significant mass lower in the path.

No recent rider triggered avalanches have been reported.

Snowpack Summary

Another 40 cm of storm snow is expected by Saturday afternoon. Alpine terrain is heavily wind-affected. South facing slopes are scoured and north through east slopes have significant amounts of wind deposited snow.

At treeline a small surface hoar layer can be found down 40 to 70 cm.

The lower snowpack is made up of 60 to 100 cm of weak facets with depth hoar in shallow locations.

Snowpack depths vary widely due to wind, but average around 100 to 220 cm in the alpine across the region.

Weather Summary

Friday Night
Mostly cloudy. 10 to 15 cm of snow. 40 to 70 km/h south ridgetop wind. Treeline temperature -5 °C.

Saturday
Mostly cloudy. 10 to 15 cm of snow. 30 to 60 km/h south ridgetop wind. Treeline temperature -2 °C.

Sunday
Mix of sun and clouds. 4 to 10 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -5 °C.

Monday
Mostly cloudy. 3 to 5 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Avoid avalanche terrain during periods of heavy snowfall.
  • It's a good day to make conservative terrain choices.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.

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.