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Avalanche Forecast

Archived

Mar 21st, 2026–Mar 22nd, 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 unlikely, human triggered possible.
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.

Regions

Northwest Coastal, Boundary, Ningunsaw.

Lingering storm slabs are most likely to trigger in wind affected terrain.

Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.

Confidence

Low

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

Avalanche Summary

On Friday, numerous explosive triggered storm slabs up to size 2.5 were reported on wind loaded features in the alpine. Numerous natural wet loose avalanches up to size 1.5 were reported on sunny aspects below 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.

Recent snowfall amounts have varied from 65 to 120 cm, with the highest amounts being in the west of the region. The recent snow and strong southwest winds have formed storm slabs overlying 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.

Weather Summary

Saturday Night
Mostly cloudy. 3 to 10 cm of snow. 50 km/h south ridgetop wind. Treeline temperature -8 °C.

Sunday
Mostly cloudy. 0 to 5 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -10 °C.

Monday
Mix of sun and clouds. 40 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Tuesday
Mix of sun and clouds. 40 km/h southeast ridgetop wind. Treeline temperature -9 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • 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.