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Avalanche Forecast

Archived

Apr 22nd, 2026–Apr 23rd, 2026

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

Regions

Northwest Coastal, Boundary, Kitimat, Nass, Rupert, Shames, Stewart.

Avalanche danger will rise through the day due to warming and sun.

Plan your trip accordingly and avoid being under or on large cornices and big slopes during the heat of the day.

Confidence

Moderate

  • We are uncertain about how the timing or intensity of warming will affect the snowpack.
  • We are uncertain due to a limited number of field observations.

Avalanche Summary

With limited overnight refreezing over the past few nights, daytime warming and strong April sun have continued to trigger natural wet loose avalanches up to size 2.5.

Check out these MIN reports from Saturday for more details:
Cornice abound and Zymbuck and Pollywood

Snowpack Summary

A widespread surface crust is expected to form overnight at treeline and above, with crust thickness and strength varying with the quality of the overnight refreeze. Isolated north-facing areas in high-alpine terrain may still hold pockets of dry, loose surface snow.

Below treeline, a limited or lack of overnight refreeze will result in a moist or isothermal upper snowpack.

With daytime warming and sun, the snowpack will weaken throughout the day.

Weather Summary

Wednesday Night
Clear skies. 20 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1000 m.

Thursday
Sunny. 20 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Friday
Sunny. 20 km/h south ridgetop wind. Treeline temperature 4 °C. Freezing level 2200 m.

Saturday
Sunny. 20 km/h northeast ridgetop wind. Treeline temperature 7 °C. Freezing level 2700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Think carefully about your exit plan from the backcountry because avalanche danger is expected to increase throughout the day.
  • Avalanche danger will increase as the surface crust breaks down.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

Problems

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.

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.