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Avalanche Forecast

Archived

Jan 5th, 2026–Jan 6th, 2026

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 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.

Warming may increase the likelihood of persistent slab avalanches, particularly in the White Pass area

Manage the uncertainty by choosing simple terrain, free from overhead hazard

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

No new avalanches were reported in the last 3 days. Prior, several large wind slabs were reported from around the region.

If you head into the mountains, please share any observations or photos on the Mountain Information Network.

Snowpack Summary

By Tuesday afternoon, 10-20 cm of new snow adds to 40-65 cm of heavily wind-affected snow. The primary concern remains the 70-100 cm of weak facets that make up the lower snowpack.

Snowpack depths vary widely due to wind, but average around 150 cm across the region.

Weather Summary

Monday Night
Mostly cloudy. 5 to 10 cm of snow. 40 - 60 km/h southwest ridgetop wind. Treeline temperature -11 °C.

Tuesday
Mix of sun and clouds. 4 to 10 cm of snow. 40 - 60 km/h south ridgetop wind. Treeline temperature -5 °C in White Pass, -10 °C or colder further inland.

Wednesday
Mix of sun and clouds. 2 to 5 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -9 °C.

Thursday
Mix of sun and clouds. 2 to 3 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -18 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • Avoid exposure to overhead avalanche terrain; avalanches may run surprisingly far.

Problems

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.

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.