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Avalanche Forecast

Archived

Dec 8th, 2024–Dec 9th, 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.
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 Coastal, Northwest Inland, Boundary, Kitimat, Nass, Rupert, Seven Sisters, Shames, Stewart, Howson, Kispiox, Microwave-Sinclair, Ningunsaw, Ningunsaw, Ningunsaw, North Bulkley, South Bulkley, South Bulkley, South Bulkley, Telkwa.

Watch for lingering pockets of wind slab at upper elevations.

Confidence

Low

Avalanche Summary

A natural avalanche cycle occurred last week as rain impacted the region.

Looking forward, lingering pockets of wind slab at upper elevations will be the main concern.

Please consider submitting your observations to the Mountain Information Network.

Snowpack Summary

Up to 25 cm of snowfall overlies a crust from rain last week. Strong winds will have created heavily wind-affected surfaces and redistribute dry snow into wind slabs.

The remainder of the snowpack is strong, with various hard layers and crusts.

Weather Summary

Sunday Night

Mainly clear with valley cloud. 15 to 30 km/h northwest ridgetop wind. Treeline temperature -1 °C.

Monday

A mix of sun and cloud. 15 to 30 km/h northwest ridgetop wind. Treeline temperature -2 °C.

Tuesday

Cloudy with up to 5 cm of snow. 30 to 60 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Wednesday

Cloudy with up to 10 cm of snow. 50 to 80 km/h southwest ridgetop wind. Treeline temperature -1 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Keep in mind a buried crust offers an excellent bed surface for avalanches.
  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.

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.