Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural and human triggered avalanches likely.
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.
Regions
South Coast.
We should be getting a good wallop of snow within all elevation bands on Tuesday. This snow may not bond well to an underlying crust. Use a conservative approach with route selection and continually make observations during your travels.
Confidence
Moderate - Intensity of incoming weather systems is uncertain
Weather Forecast
MONDAY NIGHT: Cloudy skies, freezing level 700 m.TUESDAY: Cloudy with snowfall, accumulation 20 to 30 cm, moderate southwest winds, treeline temperature -3 C, freezing level 700 m.WEDNESDAY: Cloudy with early-morning snowfall switching to rain at lower elevations and then afternoon clearing, accumulation 30 to 40 cm, moderate southwest winds, treeline temperature 0 C, freezing level rising to 1700 m during the storm.THURSDAY: Mostly cloudy, light to moderate northwest winds, treeline temperature 0 C, freezing level 2500 m.
Avalanche Summary
No recent avalanches were noted in the region. A few observations from the previous avalanche cycle from last Wednesday to Friday are found here and here.
Snowpack Summary
A surface crust is found at all elevation bands in the region. New snow on Tuesday will fall on this crust and may not bond well to it.The remainder of the snowpack is well-settled.
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.