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Avalanche Forecast

Archived

Apr 1st, 2026–Apr 2nd, 2026

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

Regions

South Columbia, Esplanade, North Selkirk, Badshot-Battle, Central Selkirk.

Keep your head up and know what’s above you.

Solar input could increase the likelihood of cornices failing naturally.

Confidence

High

  • We have a good understanding of the snowpack structure and confidence in the weather forecast.

Avalanche Summary

On Tuesday several natural cornice failures were reported. Even without triggering a slab on the slope below the debris was up to size 2.5.

Snowpack Summary

Shaded, sheltered slopes may have up to 20 cm of low-density powder, while wind slabs can be found in the immediate lee of features. Sun exposed slopes have a crust that will likely soften with solar input.

Convective flurries over the past two weeks have deposited highly variable amounts of snow above the atmospheric river crust. Depending on drainage and elevation, you may find 30 to 80 cm above this crust, which extends to at least 2300 m.

Older weak layers are unreactive and buried at least 150 cm deep.

Weather Summary

Wednesday Night
Partly cloudy. 10 km/h southeast ridgetop wind. Treeline temperature -4 °C.

Thursday
Mix of sun and clouds. 20 km/h northwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1600 m.

Friday
Mostly cloudy. 1 to 2 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -3 °C.

Saturday
Mostly cloudy. 1 to 10 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -3 °C.

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.
  • Carefully evaluate steep lines for wind slabs.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Keep in mind a buried crust offers an excellent bed surface for 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.

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.