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Avalanche Forecast

Archived

Mar 23rd, 2026–Mar 24th, 2026

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

Regions

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

New snow and easterly wind will form fresh, reactive wind slabs.

Observations in this region are limited. If you head out into the backcountry, let us know what you're seeing in a MIN report.

Confidence

Moderate

  • We are uncertain about forecast snowfall amounts.

Avalanche Summary

On Saturday, a few skier triggered size 1 wind slabs were reported on a variety of aspects at treeline.

Observations in this region are very limited. If you head out into the backcountry, let us know what you're seeing by submitting a MIN report.

Snowpack Summary

Cornices are large and looming. Avoid travelling underneath them.

Up to 15 cm of snow is expected on Tuesday, accompanied by strong southeast winds. This overlies 10 to 20 cm of recent snow and wind slabs at treeline and above, formed by strong southwest winds. Below the recent snow are a variety of surfaces, including small surface hoar, facets, crusts, and wind-scoured snow.

There are multiple persistent weak layers consisting of crust/facets or surface hoar in the top 200 cm of the snowpack.

Weather Summary

Monday Night

Mostly clear skies. 10 km/h south ridgetop wind. Treeline temperature -8 °C.

Tuesday

Mix of sun and clouds. 5 to 15 cm of snow. 30 to 50 km/h east ridgetop wind. Treeline temperature -9 °C.

Wednesday

Mostly cloudy. 5 to 10 cm of snow. 30 km/h southeast ridgetop wind. Treeline temperature -12 °C.

Thursday

Mix of sun and clouds. 2 to 3 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -9 °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.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Cornice failures could trigger large and destructive avalanches.

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.

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.