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Avalanche Forecast

Archived

Feb 4th, 2026–Feb 5th, 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 unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Dogtooth, East Purcell.

Sunny skies and above-freezing temperatures will increase the avalanche danger throughout the day.

Confidence

Moderate

  • We are uncertain due to the timing or intensity of warming will affect the snowpack.

Avalanche Summary

No new avalanches have been reported since last weekend, when a few small wind slab avalanches were reported around treeline elevations on north-facing terrain.

If you are heading into the backcountry, please share your observations with the Mountain Information Network.

Snowpack Summary

Generally, refrozen, crusty surfaces are expected around treeline elevations and below. Snow surfaces in higher alpine terrain may remain dry and powdery, while some areas at lower elevations may experience moist surfaces if a full overnight refreeze does not occur.

Above-freezing temperatures and sunny skies will likely create moist surfaces in terrain at all aspects and elevations by Thursday afternoon.

A widespread layer of surface hoar, buried in late January, is present approximately 5 to 15 cm below the surface, overlying a crust and/or faceted snow.

The mid and lower snowpack is generally well settled, with no significant concerns.

Weather Summary

Wednesday Night
Clear skies. 60 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level 3300 m.

Thursday
Sunny. 40 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level 3400 m.

Friday
Sunny. 40 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 3000 m.

Saturday
Mostly sunny. 1 to 3 cm of snow. 60 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 1900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Investigate the bond of the recent snow before committing to your line.
  • Avoid areas where the snow feels stiff and/or slabby.
  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Travel early on sun-exposed slopes before cornices weaken with daytime warming.

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.