Fresh wind slabs may be forming on lee slopes near ridge crests. These slabs may be reactive where they overlie weak layers of surface hoar or facets.
New wind slabs may be forming at upper elevations. These slabs could be more reactive if they overlie facets or surface hoar.
A skier accidentally triggered an small (size 1) wind slab avalanche on Friday on Mt. Joan. Check out this MIN for full details.
Around 4-10 cm of new snow may be accumulated at upper elevations by the end of day Sunday. This snow is falling on a variety of surfaces including a crust on sun-exposed slopes, old wind slabs and soft faceted snow in sheltered terrain. In isolated areas, wind slabs may be more reactive where they overlie facets and surface hoar.
The mid-pack contains several other crusts and layers of moist rounded grains.
Below treeline, most areas are below the threshold for forming avalanches.
Saturday Night
Cloudy with 1-4 cm of new snow / light rain, 15-30 km/h southwest alpine wind, treeline temperature 0°C, freezing level dropping to 900m.
Sunday
Cloudy with a trace to 2 cm of snow / light rain, 15-30 km/h southwest alpine wind, treeline temperature 1°C, freezing level 1200 m.
Monday
Cloudy with 2-10 cm of snow / light rain, 15 km/h southwest alpine wind, treeline temperature 3°C, freezing levels 1400 m.
Tuesday
Cloudy with 1-4 cm of new snow / light rain, 15 km/h southwest alpine wind, treeline temperature 2°C, freezing level 1300 m.
More details can be found in the Mountain Weather Forecast.
