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Avalanche Forecast

Archived

Mar 17th, 2026–Mar 18th, 2026

Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
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

Sea To Sky, Brandywine, Garibaldi, Homathko, Spearhead, Tantalus, Sky Pilot.

High avalanche danger. Avoid avalanche terrain and exposure to overhead hazards like cornices and runout zones.

Confidence

Moderate

  • We are uncertain about how the snowpack will react to the forecast weather.

Avalanche Summary

Several slab and wet loose avalanches were reported on Monday. We expect avalanche activity to continue throughout the forecast period.

Snowpack Summary

Rain continues to fall up to 2000 m in some areas, resulting in wet, unstable snow below this elevation. Above the rain line, new snow combined with strong south to southwest winds are building slabs in lee terrain.

A widespread crust is buried 20–60 cm deep below 2100 m. Beneath this, the snowpack is generally well settled with no significant layers of concern.

Weather Summary

Tuesday Night

Cloudy. 30 to 40 mm of rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2000 m.

Wednesday

Cloudy. 10 mm of rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2000 m.

Thursday

Cloudy. 30 to 50 mm of precipitation as snow or rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 1800 m.

Friday

Cloudy. 45 to 70 mm of precipitation as snow or rain at treeline. 60 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 1900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Loose avalanches may start small, but they can grow and push you into dangerous terrain.
  • Keep in mind that the high density of wet avalanches can make them destructive.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.

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.

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.