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Avalanche Forecast

Archived

Apr 12th, 2026–Apr 13th, 2026

Alpine
Natural avalanches unlikely.
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 Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

Use caution on and below ridge crests where cornices are present.

Confidence

Moderate

  • We are uncertain due to the timing, track, and intensity of the incoming weather system.

Avalanche Summary

A few small wet loose avalanches were reported on Saturday.

A cornice fall above Armchair Glacier was seen on Wednesday, suspected to have failed 12 - 24 hours earlier. It triggered a slab on the slope below (adding up to size 3), likely on one of the persistent layers mentioned in our snowpack summary. A second size 2 cornice fall on a NE aspect at about 2500 m was observed by another group in the Duffey corridor.

Snowpack Summary

Sustained high freezing levels, combined with cloud cover and periods of rain, are limiting crust recovery and will likely keep the snowpack below 1800 m weak and near isothermal. As freezing levels drop, a surface crust is expected to form at higher elevations.

Two older crust layers exist 100 to 150 cm deep at treeline and above. These layers are not a widespread concern, but on high north aspects, large cornice falls may have enough force to trigger a slab, similar to the recent event on Armchair Glacier. The snowpack below these layers remains well settled.

Weather Summary

Sunday Night

Mostly cloudy. 1 mm of precipitation as snow or rain at treeline. 20 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2100 m.

Monday

Mostly cloudy. 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1800 m.

Tuesday

Mostly cloudy. 1 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1500 m.

Wednesday

Mix of sun and clouds. 3 to 5 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -8 °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.
  • Keep in mind that the high density of wet avalanches can make them destructive.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.

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.

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.