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Avalanche Forecast

Archived

Mar 4th, 2026–Mar 5th, 2026

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

Regions

Northwest Coastal, Boundary, Kitimat, Rupert, Stewart.

Dangerous avalanche conditions persist.

Snow and wind are forming fresh storm slabs, further stressing weak layers deep in the snowpack.

Confidence

Moderate

  • We are uncertain due to how buried persistent weak layers will react with the forecast weather.
  • We are uncertain due to the variability of wind effect on the snowpack.

Avalanche Summary

A widespread natural and explosive triggered large (up to size 3) avalanche cycle continued through the week. Most of the reported activity is on north through east aspects at treeline and alpine elevations. Avalanches ran within the storm snow and on buried weak layers.

Natural avalanche activity remains possible with ongoing snow and strong winds.

Snowpack Summary

15 to 30 cm of new snow in the past 48 hours and has formed widespread storm slabs. Moderate to strong southerly winds have been sustained. Expect to encounter wind slabs in the alpine and at treeline on most lee aspect terrain.

Since early February, new snow has buried (and continues to load) a variety of old surfaces, including surface hoar, facets, and crusts. This weak layer is most likely in wind-sheltered terrain and is buried roughly 90 to 180 cm deep.

Below this layer, the remaining snowpack is generally well settled and well bonded.

Weather Summary

Wednesday Night
Mostly cloudy. 1 to 3 cm of snow. 60 km/h west ridgetop wind. Treeline temperature -6 °C.

Thursday
Cloudy. 5 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Friday
Mostly cloudy. 10 to 15 mm of precipitation as snow or rain at treeline. 70 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1100 m.

Saturday
Mostly cloudy. 5 to 25 mm of precipitation as snow or rain at treeline. 70 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy loading from new snow, wind, or rain.
  • Avalanches could start at higher elevations and travel into below treeline terrain.
  • Remote triggering is a concern; avoid terrain where triggering overhead slopes is possible.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.