Persistent weak layers in the snowpack have the potential to produce large avalanches.
In times of uncertainty, conservative terrain choices are our best defense.
Persistent weak layers in the snowpack have the potential to produce large avalanches. We have limited information about the problem in this region, but enough to recommend making conservative terrain choices until conditions improve
Triggering slabs will be most likely on wind affected slopes at upper elevations.
Expect strong solar radiation to trigger small wet loose avalanches.
Keep in mind that small avalanches in motion may step-down to deeper weak layers.
On Friday, numerous naturally triggered wet loose avalanches up to size 2 were reported on solar aspects at all elevations.
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.
Saturday Night
Clear skies. 5 to 10 km/h southeast ridgetop wind. Treeline temperature -4 °C. Freezing level valley bottom.
Sunday
Sunny. 5 to 10 km/h east ridgetop wind. Treeline temperature 1 °C. Freezing level 2000 m.
Monday
Mix of sun and cloud. 5 to 10 km/h southeast ridgetop wind. Treeline temperature 0 °C. Freezing level 1900 m.
Tuesday
Mostly cloudy. 10 to 20 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.
More details can be found in the Mountain Weather Forecast.
