The sensitive persistent weak layer remains our main concern at treeline and above.
Rider-triggered avalanches are likely, and avalanches can be destructive.
Recent snowfalls and high southwest winds have formed reactive storm slabs. Expect hazard to increase with elevation and to be greatest in leeward terrain.
There are indications of a destructive, persistent slab problem waking up in the Cascades. Wind-loaded areas at higher elevations are the most likely places to trigger this problem.
Small loose wet avalanches were observed on Wednesday from steep solar slopes in the Coquihalla.
Evidence of natural avalanches from the past weekend's storm is still visible throughout the region, with numerous very large (size 3.5 to 4) persistent slabs with impressive crowns (100 to 200 cm) in the Manning region.
30 to 40 cm of rapidly settling storm snow is found at treeline and above. Wind-affected snow is present in lee features, while a sun crust is found on southerly slopes.
A weak layer of faceted snow or surface hoar is now buried 50 to 60 cm deep and present in higher elevations, particularly shaded terrain.
A crust from December exists buried 100 to 150 cm deep, with facets around it in shallow areas.
At lower elevations, the snow is wet, heavy and water-saturated.
Wednesday Night
Mostly clear. 40 to 60 km/h southwest ridgetop wind. Treeline temperature stable around +0°C. Freezing level rising to 2200 m.
Thursday
Mix of sun and clouds. 50 to 70 km/h southwest ridgetop wind. Treeline temperature +4°C. Freezing level around 2400 m.
Friday
Mostly sunny. 40 to 50 km/h southwest ridgetop wind. Treeline temperature stable around +5°C. Freezing level rising to 2500 m.
Saturday
Mix of sun and clouds. 30 to 40 km/h south ridgetop wind. Treeline temperature +8°C. Freezing level reaching 2700 m.
More details can be found in the Mountain Weather Forecast.
