April fools, winter returns! Adjust your mindset and pay attention to changing conditions. Storm slabs will become increasingly reactive as new snow accumulates throughout the day.
New snow accompanied by strong southwest winds will build fresh storm slabs throughout the day. Be especially cautious in northerly, wind-loaded terrain where deeper more reactive slabs are expected to form.
Over the past few days, several rider-triggered wind slabs were reported from north-facing alpine terrain (size 1-1.5). Numerous wet loose avalanches were also reported from steep, sun-exposed slopes.
Conditions will change on Tuesday as strong winds and new snow impact the region. Watch for fresh, reactive storm slabs building throughout the day and be especially cautious in leeward terrain.
New snow accumulates on top of moist snow or a crust on all aspects and elevations except north-facing alpine where the snow remains dry.
The facet/crust layer that produced large avalanches during early March is buried 150-250 cm deep and is currently considered unreactive.
Monday Night
Mostly cloudy with periods of light precipitation. Ridgetop winds southwest 15 to 40 km/h. Treeline temperature 2 °C. Freezing level 2300 m.
Tuesday
Cloudy with rain turning to snow, 10 to 25 cm of accumulation. Ridgetop winds 40 to 70 km/h from the southwest. Treeline temperature drops to -1 °C. Freezing level drops to 1500 m.
Wednesday
A mix of sun and cloud with isolated flurries. Treeline temperature -5 °C. Freezing level 1000 m.
Thursday
A mix of sun and cloud. Treeline temperature rising to 0 °C. Freezing level rising to 1500 m.
More details can be found in the Mountain Weather Forecast.
