Forecast snow amounts vary throughout the region. The danger ratings as seen reflect the high end of the estimates.
Confidence
Moderate - Forecast snowfall amounts are uncertain
Weather Forecast
Monday: Snow, accumulations from Sunday night through Monday 20-35cm / Moderate to strong southwest wind / Alpine temperature -5 Tuesday: Flurries, accumulations 5cm / Moderate to strong southwest wind / Alpine temperature of -2Wednesday: Cloudy with scattered flurries / Moderate southwest wind / Alpine temperature -2
Avalanche Summary
Expect avalanche activity to rise with new snowfall accumulating Sunday night through the day Monday combined with moderate to strong wind and warming temperatures.
Snowpack Summary
20-30cm of new snow overlies the previous variable snow surface from last week, which includes hard wind pressed or scoured areas, old wind slabs, weak faceted snow, or surface hoar. Moderate to strong southwest have redistributed this new snow to form windslabs in the lee of terrain features in the alpine and treeline. The widespread mid-November crust is typically down 1-2m in the snowpack. Recent snowpack and explosive tests have shown the crust to be unreactive, but it could remain a problem in shallow alpine start zones.
Problems
Storm Slabs
Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.