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Avalanche Forecast

Archived

Nov 26th, 2024–Nov 27th, 2024

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

Regions

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

Watch for small new wind slabs which may form during the day in wind-exposed terrain.

Confidence

Low

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

The new snowfall may be burying small facets and/or surface hoar in sheltered terrain. Exposed terrain at upper elevations has been heavily wind-affected. Soft snow can likely still be found in sheltered terrain features.

Check out this detailed MIN from Ashman.

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.

Many areas below treeline do not have enough snow to meet the threshold for avalanches.

Weather Summary

Tuesday Night

Mainly cloudy with light snowfall up to 5 cm. 20 to 40 km/h northwesterly ridgetop wind. Treeline temperature -12 °C

Wednesday

Cloudy with snowfall up to 10 cm. 40 to 60 km/h west ridgetop wind. Treeline temperature -10 °C.

Thursday

Cloudy with snowfall up to 20 cm. 50 to 70 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Friday

A mix of sun and cloud. 30 to 40 km/h west ridgetop wind. Treeline temperature -12 °C.

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.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.

Problems

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.