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Avalanche Forecast

Archived

Dec 8th, 2022–Dec 9th, 2022

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

Regions

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

Strong southerly winds have built hard wind slabs at higher elevations. Carefully evaluate each slope for wind slabs before committing.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, but observations are limited this time of year.

Thank you for the MIN reports! They are extremely helpful to us in the early season when snowpack information is limited. If you head into the backcountry please submit a MIN report!

Snowpack Summary

Strong southerly ridge winds continue to strip exposed areas and build windslab at higher elevations. In sheltered areas at treeline and below new snow is burying a layer of small surface hoar and facets. New snow and wind slabs overlie heavily wind-affected surfaces in all open areas at higher elevations.

A faceting crust from mid-November can be found down 60 cm within the midpack and is reportedly bonding well.

Many early-season hazards exist below treeline such as rocks, stumps, and open creeks.

Weather Summary

Thursday Night

Cloudy with scattered flurries, 1 - 5 cm accumulation. Ridge winds southwesterly 30 to 50 km/h. Temperatures are -10 at 1500 m.

Friday

Partly cloudy with a chance flurries, trace accumulation. Ridgetop winds will be southerly 30 - 50 km/h. Temperatures are -9 at 1500 m.

Saturday

Mix of sun and cloud with isolated flurries, trace accumulation. Ridge winds easterly 40 km/h. Temperatures are -10 at 1500 m.

Sunday

Mix of sun and cloud with isolated flurries, trace accumulation. Ridge winds northeasterly 20 to 35 km/h. Temperatures are -12 at 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • Watch for areas of hard wind slab on alpine features.
  • Keep your guard up at lower elevations. Wind slab formation has been extensive.

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.