Cariboos

Very large persistent slab avalanches continue to be reported.

Triggering is most likely on northerly aspects in the alpine.

On Sunday, cornice falls triggered two size 3 persistent slab avalanches on northerly aspects in the alpine near McBride.

Numerous naturally triggered wet loose avalanches up to size 2 were also reported.

On Saturday, a sledder triggered size 2 persistent slab avalanche was reported below an alpine ridgetop near the Clemina Creek. See MIN

NOTE: Observations in this region are currently very limited.

Recent convective snowfall has been highly variable, accumulating over a crust in most areas except shady aspects in the high alpine where soft or wind affected dry snow may be found.

The primary weak layer of concern is a surface hoar, facet, and crust layer from early March, buried 50 to 100 cm deep. While its distribution and sensitivity remain uncertain, it has been highly reactive in the neighbouring Monashee regions.

The lower snowpack is likely strong and bonded in most areas.

Monday Night

Mostly cloudy with flurries, 0 to 5 cm of snow. 10 to 20 km/h west ridgetop wind. Treeline temperature -4 °C. Freezing level valley bottom.

Tuesday

Mostly cloudy with flurries, 0 to 5 cm snow. 10 to 20 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.

Wednesday

Mix of sun and cloud. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1400 m.

Thursday

Sunny. 10 to 20 km/h north ridgetop wind. Treeline temperature -5 °C. Freezing level 1400 m.

More details can be found in the Mountain Weather Forecast.

• Cornice failures could trigger large and destructive avalanches.
• Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
• In times of uncertainty, conservative terrain choices are our best defense.
• Triggering deep layers is more likely if the snow surface didn't freeze overnight.