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Avalanche Forecast

Archived

Feb 28th, 2026–Mar 1st, 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 possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Kispiox, Ningunsaw.

Stick to conservative, low consequence slopes free from overhead hazard

Human triggered avalanches are likely and natural avalanches are possible during snowfall and active wind loading

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.
  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche Summary

A natural avalanche cycle occurred to size 3, however full details are limited.

With further snow and wind expected, another natural cycle may occur in wind affected terrain.

Snowpack Summary

By Monday afternoon, 10-30 cm of new snow will raise recent storm totals to 40-90 cm. Snow is accompanied by strong southwest wind, forming deeper deposits on north and east aspects. Windward slopes may be scoured back to an old crust. In sheltered features, storm snow could overlie surface hoar or a sun crust.

Crust, facet and spotty surface hoar layers exist in the upper 1.5 metres of the snowpack. These layers are most concerning at treeline and below, especially in areas where the snowpack is shallower.

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

Weather Summary

Saturday Night
Cloudy. 5 to 15 cm of snow. 80 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Sunday
Cloudy. 5 to 15 cm of snow. 70 km/h west ridgetop wind. Treeline temperature -7 °C.

Monday
Mostly cloudy. 2 to 10 cm of snow. 60 km/h west ridgetop wind. Treeline temperature -7 °C.

Tuesday
Mostly cloudy. 5 to 20 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -3 °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.
  • Stay off recently wind loaded slopes until they have had a chance to stabilize.
  • Be aware of the potential for large avalanches due to buried weak layers.

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.