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Avalanche Forecast

Archived

Apr 22nd, 2026–Apr 23rd, 2026

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Purcells, Crawford, Dogtooth, East Purcell, Moyie, St. Mary, West Purcell.

Cooler weather will freeze the recently wet snow into a hard crust, reducing avalanche danger. Continue giving cornices a wide berth near ridgelines.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.

Avalanche Summary

Many small wet loose and slab avalanches were observed during warm weather over the past few days. They've been observed on all aspects and elevations.

Looking forward, avalanche activity is unlikely anywhere a thick and hard crust is on the snow surface. Continue to travel safely near cornices and limit exposure on sun-exposed slopes if the snow is slushy.

Snowpack Summary

Cool weather will freeze previously wet snow into a hard melt-freeze crust. A dusting of snow may accumulate over this crust over the day. The snow surface may melt on sun-exposed slopes and at lower elevations if sunny skies prevail.

Numerous hard crusts are found in the top half of the snowpack. In the high alpine near Invermere, a layer of weak facets may persist above one of these crusts, found 30 to 80 cm deep.

The snowpack continues to melt below treeline.

Weather Summary

Wednesday Night
Partly cloudy with isolated flurries. 1 to 2 mm of precipitation as snow or rain at treeline. 40 km/h northwest ridgetop wind. Treeline temperature -3 °C. Freezing level 2500 m dropping to 1600 m by morning.

Thursday
Mostly cloudy with isolated flurries. 1 to 3 cm of snow. 30 km/h northwest ridgetop wind. Treeline temperature -6 °C. Freezing level 1600 m.

Friday
Mostly cloudy. 20 km/h north ridgetop wind. Treeline temperature -7 °C. Daytime freezing level rising to 1500 m.

Saturday
Mix of sun and clouds with isolated flurries. 1 to 2 cm of snow. 20 km/h north ridgetop wind. Treeline temperature -6 °C. Daytime freezing level rising to 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Periods of low danger may be a good time to increase your exposure.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.

Problems

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.