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Avalanche Forecast

Archived

Dec 12th, 2025–Dec 13th, 2025

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

Regions

Northwest Inland, Kispiox, Microwave-Sinclair, North Bulkley, South Bulkley, South Bulkley, South Bulkley, Telkwa.

Trees may offer cover from the wind, but they may also harbor a recently buried weak layer.

Confidence

Moderate

Avalanche Summary

Observations have been limited. There have been no recent reports of avalanches in the region.

If you are getting out in the backcountry, consider sharing your observations on the Mountain Information Network (MIN)!

Snowpack Summary

A new storm arrives with cold, low density snow and strong wind. It falls over 50 to 70 cm from earlier this week. In wind-sheltered areas, this recent snow sits over a weak layer of feathery surface hoar crystals, making for a poor bond.

The mid snowpack contains a crust with small facets above it, but does not present a problem at this time.

The snowpack is around 1 m deep at treeline, tapering quickly with elevation.

Weather Summary

Friday night
Increasing cloud. 30 km/h southeast ridgetop wind. Treeline temperature -15 °C.

Saturday
Cloudy. 10 to 15 cm of snow. 60 to 80 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Sunday
Mostly cloudy. 10 to 15 cm of snow. 60 to 70 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Monday
Mostly cloudy. 15 to 20 mm of mixed precipitation. 50 km/h southwest ridgetop wind. Treeline temperature +1 °C. Freezing level 1800 m.

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.
  • Be aware of the potential for large avalanches due to buried surface hoar.
  • Any steep opening in the trees should be treated as suspect right now.
  • Choose simple, low-angle terrain without steep convex rolls.

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.