Heavy snowfall and strong wind will rapidly increase avalanche danger over the day. Travel in avalanche terrain is not recommended if you find 25+ cm of new snow on Monday.
Up to 30 cm of new snow may accumulate by Monday evening, which could rapidly form new slabs. Natural avalanche activity is expected during periods of rapid snow loading.
We haven't received any recent avalanche observations but expect that storm slabs released during stormy conditions on Sunday. We anticipate natural avalanche activity on Monday as stormy conditions continue.
Around 15 to 30 cm of snow accumulated over the weekend and another 20 to 30 cm is forecast for Monday. Strong southwest wind will mean even deeper deposits in leeward terrain features.
All this snow is loading a weak layer of surface hoar and/or faceted grains found in the middle of the snowpack. The layer of facets may be associated with a hard melt-freeze crust. In thin snowpack areas, faceted grains may extend to the ground.
Average snow depths at treeline range from 50 to 100 cm and decrease rapidly at lower elevations.
Sunday Night
Cloudy. 2 to 5 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -4 °C.
Monday
Cloudy. 20 to 30 cm of snow with local areas up to 40 cm possible. 50 km/h south ridgetop wind. Treeline temperature -7 °C.
Tuesday
Cloudy. 15 to 30 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -6 °C.
Wednesday
Cloudy. 10 to 20 mm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -10 °C.
More details can be found in the Mountain Weather Forecast.
