South Columbia

Freshly formed storm slabs will be most reactive on lee features at upper elevations on Wednesday.

Stay alert to conditions that change with elevation, aspect, and exposure to wind.

• Be alert to conditions that change with elevation, aspect, and exposure to wind.
• Avoid freshly wind-loaded features, especially near ridge crests, rollovers, and in steep terrain.
• Use ridges or ribs to avoid areas of wind-loaded snow.
• Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

Moderate

• We are uncertain about forecast snowfall amounts.

On Monday, a naturally triggered size 3 glide slab avalanche was reported on a very steep rock slab on a southeast aspect in the alpine.

Several skier triggered dry loose avalanches up to size 1.5 were also reported.

Observations are currently very limited in this region. Please consider submitting a MIN to let us know what you're seeing out there.

Forecast snow and southwest wind will form fresh storm slabs that will be most reactive on lee features at upper elevations.

Below the recent snow is a hard crust that exists on all aspects to at least 2700 m.

Crusts from late March can be found down 20 to 80 cm, depending on elevation/aspect.

The mid and lower snowpack is well settled and strong in most areas.

Tuesday Night
Cloudy. 10 to 20 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Wednesday
Mix of sun and clouds. 0 to 5 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -7 °C.

Thursday
Mostly sunny. 20 km/h northwest ridgetop wind. Treeline temperature -7 °C.

Friday
Mix of sun and clouds. 20 km/h northwest ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.