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Avalanche Forecast

Archived

Mar 10th, 2026–Mar 11th, 2026

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

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Storm snow continues to accumulate atop a widespread crust. Avoid avalanche terrain during periods of heavy snow and/or strong wind.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.
  • We are confident the likelihood of avalanches will increase with the forecast weather.

Avalanche Summary

We do not have any recent reports of avalanches, but suspect recent avalanche activity has occurred during periods of rapid loading from heavy snow and/or wind transport.

If you are heading into the backcountry, please share any observations with the Mountain Information Network.

Snowpack Summary

Roughly 50 cm of new snow since the weekend has accumulated along with southwesterly alpine winds. The snow overlies a crust from last Saturday's rain that is likely present at most elevations, except possibly in isolated high alpine areas.

On north aspects, 80 to 150 cm below the surface, two persistent weak layers exist (buried in late January and early February) and contain weak facets over a crust. It remains uncertain whether the recent warm conditions had any stabilizing effect on the reactivity of these layers.

Weather Summary

Tuesday Night
Cloudy. 10 to 25 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Wednesday
Mostly cloudy. 10 to 20 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Thursday
Cloudy. 20 to 35 cm of snow. 70 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Friday
Mostly cloudy. 4 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Avoid freshly wind-loaded terrain features.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.