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Avalanche Forecast

Archived

Feb 4th, 2026–Feb 5th, 2026

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

Regions

Sugarbowl, Kakwa, McGregor, Pine Pass, Renshaw, Robson.

A cohesive slab rests over a weak layer and may be primed to human triggering. During times of uncertainty, choose conservative terrain.
Check out our latest video conditions update here.

Confidence

Moderate

  • We are uncertain about forecast precipitation amounts.
  • We are uncertain due to how buried persistent weak layers will react with the forecast weather.

Avalanche Summary

Several natural slab avalanches up to size 2.5 were reported on Wednesday. Natural and human-triggered avalanches may continue on Thursday.

Snowpack Summary

Up to 25 cm of snow, which turned to rain, fell on Wednesday, adding a new load above the late January surface hoar/facet/ crust interface. This weak layer is found anywhere from 30 to 50 cm beneath the surface. The buried surface hoar is largest on sheltered treeline and below-treeline features.

Strong southwest winds may have formed deeper deposits northeast slopes in the alpine.

By Thursday afternoon, the snow surface is expected to become wet and heavy at most elevations.

Check out this MIN from the Pine Pass for more details on the buried interface.

Weather Summary

Wednesday Night
Cloudy. 4 mm of rain at treeline. 70 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2000 m.

Thursday
Mostly cloudy. 2 mm of rain at treeline. 40 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2200 m.

Friday
Mix of sun and clouds. 50 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2600 m.

Saturday
Mostly cloudy. 10 to 20 mm of precipitation as snow or rain at treeline. 60 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Stay away from steep slopes, open slopes, and convex rolls at and below treeline where weak layers may be preserved.
  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Keep in mind that the high density of wet avalanches can make them destructive.
  • Avoid travelling on slopes below cornices.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.