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Avalanche Forecast

Archived

Dec 15th, 2025–Dec 16th, 2025

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

Regions

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

Take a cautious approach.

Use small low consequence terrain to investigate how the new snow has bonded to the old surface and back down from terrain if you encounter signs of instability.

Confidence

Low

Avalanche Summary

Observations have been limited but reports of large (size 2) natural avalanches that happened during the weekends storm have been a small glimpse into the natural avalanche cycle that happened over the weekend and into Monday.

Small (size 1) human triggered avalanches have been reported in the region as well.

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

Snowpack Summary

20 to 40 cm of snow fell with strong wind this past weekend in places this will be capped by a thin rain crust.

In wind-sheltered areas around treeline, a couple of weak layers of surface hoar are buried 60 to 100 cm deep. These were reactive in snowpack tests last week, but so far we haven't seen evidence of avalanche activity on them.

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

The snowpack is around 150 cm deep at treeline, tapering quickly with elevation.

Weather Summary

Monday Night
Mostly cloudy. 5 cm of new snow. 30 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 500 m.

Tuesday
Mostly cloudy. 5 to 10 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Wednesday
Mostly cloudy. 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Thursday
Mostly cloudy. 5 to 10 cm of snow. 30 km/h south ridgetop wind. Treeline high temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • It's a good day to make conservative terrain choices.
  • Be aware of the potential for large avalanches due to buried surface hoar.
  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.

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.