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Avalanche Forecast

Archived

Apr 9th, 2026–Apr 10th, 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

South Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

Keep an eye on those cornices! One more sunny day of exploring before the clouds roll in. Bring sharp tools for the crust and start and finish early to avoid getting caught in isothermal snow.

Confidence

High

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

Avalanche Summary

Activity in the region has been on a steady downward trend.

A cornice fall above Armchair Glacier was reported Wednesday, suspected to have failed 12 - 24 hours earlier. It triggered a slab on the slope below, likely on one of the persistent layers mentioned in our snowpack summary. Collectively, it amounted to size 3.

Explosives control in the Duffey on Monday produced small wet loose avalanches and a few slabs to size 1.5. One failed on the 30 - 40 cm-deep late-March crust.

Snowpack Summary

Spring-like melt-freeze cycles now characterize a daily evolution of surface conditions on all but north-facing slopes above 2000 m, where about 10 cm of dry snow may still be found. It overlies old wind-affected snow above this elevation and a firm crust below.

Two older crusts exist 1-1.5 m deep at treeline and above. Concern for these layers is limited to high north aspects where large cornice fall may have enough force to trigger a slab, like what was observed on Armchair Glacier on Wednesday. The mid and lower snowpack are otherwise well settled.

Weather Summary

Thursday Night
Clear skies. 10 to 20 km/h southwest ridgetop wind, increasing. Treeline temperature 3 °C. Freezing level 2500 m.

Friday
Sunny. 20 km/h southwest ridgetop wind. Treeline high temperature 4 °C. Freezing level 2600 m.

Saturday
Mainly cloudy with scattered showers, 1 to 3 mm. 5 to 10 km/h southwest ridgetop wind, easing. Treeline high temperature 3 °C. Freezing level 2500 m.

Sunday
Mostly cloudy with light rain, 2 to 4 mm, and a possible trace of new snow in the alpine. 10 km/h east ridgetop wind. Treeline high temperature 4 °C. Freezing level 2400 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.
  • Rocks will heat up with daytime warming and may become trigger points for loose wet avalanches.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • 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.