New snow accompanied with wind will build and develop storms slabs through the day.
Areas may receive up to 30 cm snowfall by the end of Tuesday. Avalanche danger will increase through the day as snow accumulates and is impacted by wind.
Monday night: Flurries, up to 15 cm by Tuesday morning. Alpine temperature -5 C, southwest wind 25-45 km/hr
Tuesday: Snow and flurries, 5-20 cm falling through the day. Alpine temperature -6 C, southwest wind 25-45 km/hr.
Wednesday: Flurries, 5-10 cm. Alpine temperature -6 C, west wind 20-40 km/hr.
Thursday: Mix of sun and cloud and isolated flurries. Alpine temperature -10 C, south wind 10-30 km/hr.
The likelihood of triggering storm slab avalanches will increase through the day as new snow accumulates and is impacted by wind.
Snow and flurries have fallen on a faceted upper snowpack and previously wind-affected surfaces. Below the 15-35 cm old wind-affected snow, a layer of surface hoar (feathery crystals) may be found in sheltered areas around treeline and below; in these areas old, stubborn wind slabs may still be reactive where they overly the weak surface hoar on a crust.
Snow depths range from 60-110 cm around treeline elevations. A variety of crusts from late October are buried deeper in the snowpack (down 50-100 cm).
