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Avalanche Forecast

Archived

Mar 28th, 2026–Mar 29th, 2026

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

Regions

Northwest Coastal, Boundary, Ningunsaw.

Triggering wind slabs and persistent slabs remains possible in the region.

Watch Conditions Update Here.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.

Avalanche Summary

On Friday, explosives triggered a size 2.5 slab out of a north-facing treeline feature. It was up to 70 cm deep and suspected to have failed on a persistent weak layer, a crust from mid-March. Several size 1 skier-triggered slabs were also reported below treeline, along with naturally triggered storm slabs up to size 2.

Snowpack Summary

Strong winds from variable directions left slabs and pressed surfaces in open and exposed terrain at upper elevations.

10 to 30 cm of softer settling snow can be found in wind-sheltered, shady areas. This snow is covering a variety of old surfaces, including surface hoar, facets, crusts, and/or wind-scoured snow. A new suncrust may have developed on sunny aspects.

There are multiple persistent weak layers consisting of crust/facets or surface hoar in the top 250 cm of the snowpack. While triggering these layers is trending unlikely, they present a low-probability, high-consequence problem.

Weather Summary

Saturday Night
Mostly clear skies. 10 km/h west ridgetop wind. Treeline temperature -10 °C.

Sunday
Mix of sun and clouds. 10 km/h west ridgetop wind. Treeline temperature -11 °C.

Monday
Mostly cloudy. 0 to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -10 °C.

Tuesday
Mostly cloudy. 4 to 6 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • In times of uncertainty, conservative terrain choices are our best defense.
  • Seek out wind sheltered terrain below treeline where you can avoid wind slabs and find great riding.

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.