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Avalanche Forecast

Archived

Apr 11th, 2026–Apr 12th, 2026

Alpine
Natural avalanches unlikely, human triggered possible.
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

Dogtooth, East Purcell, West Purcell.

Verify conditions as you travel.

Avoid exposure to large, overhanging cornices.

Confidence

Moderate

  • We are uncertain about how the snowpack will react to the forecast weather.

Avalanche Summary

Several natural cornice falls were reported on Friday. Loose wet avalanches were also reported to size 2.5.

Observations from this region are currently limited. Please consider submitting a MIN to let us know what you're seeing out there.

Snowpack Summary

A lack of overnight refreeze will likely keep the snow surface moist/wet to mountain top.

A thick crust from mid-March is 20-60 cm deep, which extends up to about 2400 m. Near Invermere, weak sugary facets may be found above this crust.

In shallow snowpack areas, depth hoar (large facets) can be found near the bottom of the snowpack. Snowpack depth tapers rapidly at lower elevations.

Weather Summary

Saturday Night
Mostly cloudy. 1 to 2 mm of precipitation as snow or rain at treeline. 10 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2200 m.

Sunday
Mostly cloudy. 2 to 5 mm of precipitation as snow or rain at treeline. 10 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2200 m.

Monday
Mostly sunny. 1 to 2 mm of precipitation as snow or rain at treeline. 20 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2200 m.

Tuesday
Mostly cloudy. 2 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Cornice failures could trigger large and destructive avalanches.

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.