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Avalanche Forecast

Archived

Jan 7th, 2026–Jan 8th, 2026

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

Regions

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

Choose low consequence terrain.

The combination of 40 cm of storm snow, strong wind, and a persistent weak layer means rider triggered avalanches are likely.

Confidence

Moderate

  • Uncertainty is due to the limited number of field observations.
  • Uncertainty is due to the fact that persistent slabs are particularly difficult to forecast.

Avalanche Summary

A natural avalanche cycle occurred Tuesday night. Early reports are of natural avalanches up to size 2.

Snowpack Summary

Up to 40 cm of recent storm snow overlies a variety of surfaces including facets, surface hoar, and wind pressed snow. Deeper deposits will be found on north facing slopes due to strong southerly wind.

The lower snowpack is made up of 60 to 100 cm of weak facets

Snowpack depths vary widely due to wind, but average around 160 to 220 cm in the alpine across the region.

Weather Summary

Wednesday Night

Partly cloudy. 1 cm of snow. 15 km/h southwest ridgetop wind. Treeline temperature -16 °C.

Thursday

Mix of sun and clouds. 2 to 5 cm of snow. 20 km/h southwest ridgetop wind in the morning , increasing to 40 km/h in the late afternoon. Treeline temperature -18 °C.

Friday

Mostly cloudy. 2 to 5 cm of snow. 25 to 40 km/h south ridgetop wind. Treeline temperature -16 °C.

Saturday

Mostly cloudy. 5 to 10 cm of snow. 30 to 50 km/h south ridgetop wind. Treeline temperature -6 °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.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.

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.

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.