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Avalanche Forecast

Archived

Apr 10th, 2026–Apr 11th, 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

Sea To Sky, Brandywine, Garibaldi, Homathko, Powell River, Spearhead, Tantalus.

Crust recovery is a bit uncertain for Saturday, but it's mainly a travel conditions concern. Lingering cornices are the main hazard to avoid.

Confidence

High

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

Avalanche Summary

A cornice-triggered slab avalanche was observed from a distance on Overlord Mountain on Wednesday. It happened on a northwest aspect at 2400 m.

After last weekend's warmup, several additional natural wet loose avalanches up to size 2.5 were observed in the Whistler area Monday, focused on west aspects above 2000 m. Ski cutting produced several size 1.5 releases. Similar wet loose activity, though smaller in both number and size, has been reported through the week.

Snowpack Summary

Cloud and light rain may combat crust recovery on Saturday, possibly keeping or moving the snowpack below 2000 m closer to an isothermal state. This follows recent melt-freeze cycling surface conditions on the region's well settled snowpack. Rain may finally warm the 10 - 20 cm of windblown dry snow hiding on the region's higher north-facing slopes.

A crust/facet layer from late March sits 20 to 80 cm deep and another thick crust sits 80-100 cm deep. Near Whistler, some facets have been reported around the deeper crust. Neither layer is an avalanche problem right now, but they perhaps give cornices from high north aspects a slim chance of triggering a slab, like the one observed on Overlord Mountain Wednesday.

Weather Summary

Friday Night
Partly cloudy with isolated showers, less than 1 mm. 15 to 20 km/h southwest ridgetop wind. Treeline temperature 5 °C. Freezing level 2600 m.

Saturday
Mostly cloudy with scattered showers, 1 to 2 mm. 5 to 10 km/h southwest ridgetop wind. Treeline temperature falling from 5 °C to 3 °C. Freezing level dropping from 2500 m to 2100 m.

Sunday
Mostly cloudy with scattered showers, less than 1 mm. 10 to 15 km/h southwest ridgetop wind, increasing. Treeline high temperature 5 °C. Freezing level to 2300 m.

Monday
Cloudy with scattered showers becoming wet flurries, less than 5 mm with trace alpine snow accumulation. 20 to 25 km/h southwest ridgetop wind, increasing. Treeline high temperature 1 °C. Freezing level 1800 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.
  • 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.