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Avalanche Forecast

Archived

Mar 6th, 2026–Mar 7th, 2026

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

Regions

Banff Yoho Kootenay, Banff, East Side 93N, Lake Louise, LLSA, Sunshine, West Side 93N, Field.

Uncertainty remains regarding a layer of facets 40 to 60 cm deep that is producing variable moderate results with stability tests. Several avalanches have failed on this layer over the past week.

Confidence

Moderate

  • We are uncertain about how quickly persistent slabs are gaining strength.

Avalanche Summary

No new avalanches reported in past 48 hours.

Snowpack Summary

Scouring, wind effect and some windslabs exist in the alpine. The Jan 24 facet/crust layer is down 40-60 cm and producing variable moderate sudden planar results with stability tests. The distribution of this layer is difficult to pin down but has been observed at all elevation bands. A thin temperature crust exists on surface at lower elevations. The lower snowpack is generally strong.

Weather Summary

Saturday: Cloudy with light flurries. Winds strong from the west. Freezing Levels near 2300m

Sunday: 10-20 cm of snow forecast by end of day Sunday. Strong winds from the West. Freezing levels near 2100m.

Terrain and Travel Advice

  • Be aware of the potential for large avalanches due to buried weak layers.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Problems

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.

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.