Lizard-Flathead

20 to 25 cm of recent snow and strong northwest wind have formed wind slabs at treeline and above.

Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.

Several naturally triggered dry loose avalanches up to size 1.5 were reported on steep slopes in the alpine on Saturday.

20 to 25 cm of recent snow and strong northwest wind have formed wind slabs on lee features at treeline and above. This snow overlies predominantly crusty surfaces, except for northerly aspects at upper elevations.

A widespread, hard crust with facets above is buried 80 to 120 cm down in the South Rockies and up to 200 cm in the Lizard range. Steep or convex terrain features with a shallow or thin to thick snowpack at treeline and above are the most likely places to trigger this layer. However, when a thick surface crust is present, human triggering this layer is unlikely.

Sunday night

Clear skies. 30 to 40 km/h northwest ridgetop wind. Treeline temperature -12 °C. Freezing level valley bottom.

Monday

Mostly cloudy. 30 to 40 km/h northwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1300 m.

Tuesday

Mostly cloudy with isolated flurries, 0 to 5 cm. 30 to 40 km/h west ridgetop wind. Treeline temperature -3 °C. Freezing level 1700 m.

Wednesday

Mix of sun and cloud. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1800 m.

Check out the Mountain Weather Forecast for additional weather information.

More details can be found in the Mountain Weather Forecast.

• Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
• Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
• Cornice failure may trigger large avalanches.