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Avalanche Forecast

Archived

Jan 10th, 2026–Jan 11th, 2026

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

Regions

South Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

A buried weak layer means large avalanches are possible.

Avoid large open slopes at treeline.

Confidence

Moderate

  • Uncertainty is due to the fact that persistent slabs are particularly difficult to forecast.

Avalanche Summary

On Friday, there were a few large skier-triggered persistent slabs failing at treeline. It is suspected they both failed on surface hoar and/or sugary facets over a crust buried 30-50 cm deep.

Snowpack Summary

20 to 30 cm of recent snow has been redistributed by strong south and west wind.

This sits on a spotty layer of surface hoar on a crust that is 30 to 50 cm deep.

The base of the snowpack has a few crusts from early in the season that are not currently a concern.

Weather Summary

Saturday Night
Mostly cloudy. 2 to 5 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1200 m.

Sunday
Mostly cloudy. 2 to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1500 m.

Monday
Mostly cloudy. 10 to 25 mm of precipitation as snow or rain at treeline. 40 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 1900 m.

Tuesday
Mostly cloudy. 1 mm of rain at treeline. 40 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for large avalanches due to buried surface hoar.
  • Surface hoar distribution is highly variable. Avoid generalizing your observations.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.

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.

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.