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Avalanche Forecast

Archived

Mar 21st, 2026–Mar 22nd, 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 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

Kitimat, Nass, Rupert, Shames, Stewart.

Triggering newly formed storm slabs will be most likely in wind affected terrain on Sunday.

Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.

Confidence

Moderate

  • We are uncertain about alpine conditions due to limited field observations.

Avalanche Summary

On Friday, a natural wet loose size 2 avalanche was reported on a southeast aspect in the alpine. A size 1 skier triggered wind slab was reported on a north aspect at treeline.

A widespread natural storm slab avalanche cycle up to size 3 occurred over the last week on all aspects/elevations.

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 traveling underneath them.

Forecast 15 to 30 cm of snow and moderate southwest winds Saturday night/Sunday may form reactive storm slabs. Storm slabs are most likely to be reactive in wind affected terrain.

Recent snowfall amounts have varied from 85 to 140 cm, with the highest amounts being in the south of the region. Below the recent snow is a weak layer of surface hoar and/or facets that will be most likely to trigger in wind affected terrain.

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

The lower snowpack is generally well settled and strong.

Weather Summary

Saturday Night
Cloudy. 5 to 15 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Sunday
Cloudy. 10 to 20 cm of snow, another 10 to 15 cm overnight. 40 km/h south ridgetop wind. Treeline temperature -8 °C.

Monday
Mostly cloudy. 0 to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Tuesday
Mostly cloudy. 3 to 10 cm of snow. 40 km/h southeast ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Be aware of the potential for larger than expected storm slabs due to buried surface hoar.
  • Use small, low consequence slopes to test the bond of the new snow.
  • Cornice failures could trigger large and destructive avalanches.

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.