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Avalanche Forecast

Archived

Mar 8th, 2026–Mar 9th, 2026

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

Regions

Microwave-Sinclair, North Bulkley, South Bulkley, Telkwa.

Wind slabs remain possible to human trigger.

Avoid wind-loaded slopes, especially where wind slabs overlie facets or in thin, rocky terrain where persistent slabs are easier to trigger.

Confidence

Moderate

  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.
  • We are uncertain due to the variability of wind effect on the snowpack.

Avalanche Summary

No new avalanches reported.

On the weekend, visibility was obscured. We expect there was some natural wind slab avalanche activity.

Snowpack Summary

Roughly 5 to 10 cm of cold snow has fallen on a mix of moist or refrozen (20 to 30 cm) of storm snow.

During the storm, strong southwest wind heavily impacted terrain at treeline and above.

Two notable layers exist in the snowpack. A layer of facets from early February, up to 40 cm deep. A thick crust from late January, 50 to 100 cm deep. Both of these layers are a concern in wind-affected terrain.

The remainder of the snowpack is well settled.

Weather Summary

Sunday Night
Partly cloudy. 1 to 3 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Monday
Mix of sun and clouds. 1 to 2 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Tuesday
Mix of sun and clouds. 1 to 2 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Wednesday
Mix of sun and clouds. 1 to 3 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -8 °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.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.

Problems

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.

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.