Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Regions
Glacier.
Recent storm snow has settled into a touchy soft slab. This will be most reactive at ridgetop or in steep unsupported terrain.
Weather Forecast
A slow moving low pressure system offshore is tracking Southeast today, bringing potential for convective flurries and a mix of sun and cloud. We could receive another 5 or more cm's today with freezing level at 1000m and light SW winds gusting to 40kph. High pressure is expected to build on Sunday, leaving dry conditions for the rest of the week.
Snowpack Summary
25cm of new snow from the last 24 hrs sits on the previous storm snow. The November 26th crust layer is easily identified down 65cm. It separates the moist and warm lower snowpack from the cold and dry upper snowpack. Recent stability tests show a generally good bond between the Nov 26 and the dry snow above.
Avalanche Summary
Reports came in late yesterday of a natural avalanche cycle triggered by new snow and wind loading. The avalanche path 'Frequent Flyer' ran during the day on Dec 1, pushing through alders and burying the skintrack 7-10m wide. A good report here. Avalanche activity is expected to continue today.
Confidence
Forecast snowfall amounts are uncertain
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.