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Avalanche Forecast

Archived

Jan 13th, 2026–Jan 14th, 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 unlikely, human triggered possible.
Below Treeline
Below Threshold.

Regions

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

6:30 AM Update: New snow and extreme wind are forming dangerous avalanche conditions. Naturally triggered avalanches are likely today.

Confidence

High

  • We are confident a natural avalanche cycle will begin shortly after the arrival of the incoming weather.

Avalanche Summary

With heavy precipitation as snow or rain, and strong winds expected a natural slab avalanche cycle is likely. Persistent slab avalanches are also possible, more so in thin snowpack areas.

Snowpack Summary

At upper elevations up to 40 cm of snow is possible by the end of Wednesday, redistributed into deeper deposits on north and east facing slopes. Exposed south facing slopes likely remain scoured.

Slopes at treeline may receive rain, or a mix of rain and wet snow. A small surface hoar layer exists here, 60-90 cm deep. The lower snowpack consists of 60-100 cm of weak facets, with depth hoar in shallower areas.

Alpine snowpack depths vary widely due to wind effect, ranging from 130-250 cm across the region.

Weather Summary

Tuesday Night
Cloudy. 15 to 30 mm of precipitation as snow or rain at treeline. 60-80 km/h south ridgetop wind, potentially gusting over 100 km/h. Treeline temperature 0 °C. Freezing level 1000 m.

Wednesday
Mostly cloudy. 5 to 15 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level drops to 600 m.

Thursday
Mostly cloudy. 1 to 5 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 300 m.

Friday
Mostly cloudy. 5 to 10 mm of precipitation as snow or rain at treeline. 70 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 1200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid exposure to overhead avalanche terrain; avalanches may run surprisingly far.
  • Avoid avalanche terrain during periods of heavy loading from new snow, wind, or rain.

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.