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Avalanche Forecast

Archived

Nov 27th, 2024–Nov 28th, 2024

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 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

Northwest Inland, Kispiox, Ningunsaw, Ningunsaw, Ningunsaw, North Bulkley, South Bulkley, South Bulkley, South Bulkley, Telkwa.

Carefully assess slopes for slab properties.

Storm slab size and sensitivity will likely increase throughout the day.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported since the weekend, but reports have been limited. Please consider submitting your observations to the Mountain Information Network.

Snowpack Summary

By the morning of November 28th up to 15 cm could overlie variable snow surfaces, including small facets and/or surface hoar in sheltered areas and heavily wind-affected snow in exposed terrain.

A rain crust from early November is buried 40 to 90 cm deep and seems to be bonding well to overlying layers.

Alpine snow depths vary across the region, with up to 130 cm west of Smithers and around 60 cm to the east.

Weather Summary

Wednesday Night

Cloudy with up to 10 cm of snow expected. 25 to 50 km/h southwest ridgetop wind. Treeline temperature -7°C.

Thursday

Cloudy with up to 10 cm of snow expected. 25 to 50 km/h southwest ridgetop wind. Treeline temperature -5°C.

Friday

Cloudy  with up to 20 cm of snow expected by mid morning. 25 to 40 km/h southwest ridgetop wind. Treeline temperature -7°C.

Saturday

Cloudy with up to 20 cm of snow possible. 40 to 70 km/h southwest ridgetop wind. Treeline temperature -1°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Closely monitor how the new snow is bonding to the old surface.

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.