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Avalanche Forecast

Archived

Feb 26th, 2023–Feb 27th, 2023

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

Regions

Northwest Coastal, Kitimat, Nass, Rupert, Seven Sisters, Shames, Stewart, Howson, Microwave-Sinclair, Telkwa.

Parts of our region will continue to accumulate various amounts of new snow. Wind will continue to redistribute this snow.

Don't let good skiing lure you into extreme terrain.

Seek out sheltered low-angle terrain for the best riding.

Confidence

Moderate

Avalanche Summary

Recent variable winds and low-density snow created reactive wind slabs on all aspects that have produced several natural and human-triggered avalanches up to size 2.5 in recent days.

Snowpack Summary

Weekend snow may have been transported by southerly winds creating wind slabs at most elevations. New wind slabs and new undistributed snow will be sitting on older wind slabs created earlier this week. These wind slabs can be found on all aspects and at most elevations.

Up to 80 cm now sits over a layer of small surface hoar, facets, and wind-affected surfaces.

A crust from late January exists around 140 to 180 cm below the surface. Beneath the crust, the snowpack is generally consolidated but as you move further inland there are instabilities found near the ground where the snowpack is thinner.

The total height of snow varies between 450 cm near the coast and 250 cm further inland.

Weather Summary

Sunday Night

Cloudy with some clear periods, trace cm accumulation with up to 10 cm on the coast, winds, southwest 25 km/h, treeline temperatures -10 ºC.

Monday

Cloudy with late day sun, trace accumulation in most places and 8cm in the southwest area, winds southwest 20 to 30 km/h, treeline temperatures hovering around -10 ºC.

Tuesday

Mostly sunny, trace accumulation, winds northerly 5 to 10 km/h, treeline temperatures -8 to -12 ºC.

Wednesday

Cloudy, 5 cm accumulation, winds southwest 25km/h, treeline temperatures -10 to -5 ºC.

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 signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.

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.