North Rockies

Small slabs may be present in the alpine and are most likely to trigger in wind affected terrain.

On Tuesday, a few naturally triggered size 1 wind slabs were reported on southerly aspects in the alpine.

NOTE: Observations in this region are currently very limited.

Up to 20 cm of recent snow overlies a crust in most areas, except shady aspects in the alpine where soft or wind affected dry snow may be found. Recent snow amounts taper with elevation.

A persistent weak layer from early March, 40 to 80 cm deep, most likely exists as surface hoar on sheltered north and east aspects in the alpine. Its distribution is variable, and there have been no substantial reports of recent avalanches, but it should still be considered when evaluating slopes.

Wednesday Night

Partly cloudy. 10 to 20 km/h north ridgetop wind. Treeline temperature -8 °C. Freezing level valley bottom.

Thursday

Sunny. 5 to 10 km/h northwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1400 m.

Friday

Sunny. 10 to 20 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level 2000 m.

Saturday

Sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature 5 °C. Freezing level 2600 m.

More details can be found in the Mountain Weather Forecast.

• Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
• Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.