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Avalanche Forecast

Archived

Feb 27th, 2026–Feb 28th, 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 unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Wind slabs have formed across a wide range of terrain.
Carefully assess for slabs before entering big or committing terrain features.
Back off of sunny slopes if the surface turns moist.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.

Avalanche Summary

No avalanches have been reported in the past few days in the Cascades.

Looking forward, triggering wind slabs and wet loose avalanches may be possible on Saturday.

If you head out, please consider posting your observations to the Mountain Information Network.

Snowpack Summary

Recent snow has been heavily affected by the strong to extreme westerly winds. Expect scoured windward slopes and wind slabs at all elevations on lee slopes.

A crust/ facet layer can be found 30 to 60 cm deep across the region. Recent observations and tests suggest the snow is well-bonded to this layer, and it is not currently a concern. Check out this MIN report for more details.

The snowpack below is strong and well-bonded.

Weather Summary

Friday Night
Cloudy. 1 to 4 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -6 °C. Freezing level 1000 m.

Saturday
Mix of sun and clouds. 20 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level rising to 1700 m.

Sunday
Sunny. 10 km/h west ridgetop wind. Treeline temperature 4 °C. Freezing level rising to 2300 m.

Monday
Mostly sunny. 40 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level 2100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid freshly wind-loaded terrain features.
  • Recent strong wind means wind slabs may be found farther downslope than expected.
  • Investigate the bond of the recent snow before committing to your line.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.

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.