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.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Regions
South Coast Inland.
Wind stiffened storm slabs are expected to remain sensitive to human triggering throughout the day Tuesday even as the storm begins to relent.
Confidence
Low - Due to the number of field observations
Weather Forecast
An atmospheric river is expected to spill over into the region delivering strong to extreme wind, warm temperatures and a bit of precipitation through Tuesday. The overall flow should become more westerly Tuesday night allowing the freezing level to lower. A weak ridge is anticipated for the latter half of the week with potential for another significant series of storms by the weekend.MONDAY NIGHT: Freezing level around 2000 m, extreme southwest wind, 5 to 25 mm of precipitation falling as snow at upper elevations. TUESDAY: Broken cloud cover, freezing level beginning around 2000 m lowering to around 1800 m in the afternoon, moderate to strong southwest wind, 1 to 10 mm of precipitation possible.WEDNESDAY: Scattered cloud cover, freezing level holding around 1000 m, moderate southwest wind, 2 to 8 mm of precipitation possible.THURSDAY: Broken cloud cover, clearing in the afternoon, freezing level around 1000 m, light variable wind, no significant precipitation expected.
Avalanche Summary
No recent avalanches observed.Please submit any observations you have to the Mountain Information Network here.
Snowpack Summary
Snow depths are around 50 to 90 cm at treeline and alpine elevations, although there may be deeper deposits in wind-loaded areas. Approximately 30 cm of recent snow sits above a layer of surface hoar (north aspects) or a crust (south aspects). All but the highest elevation and/or smoothest slopes have insufficient snow cover for avalanches to occur at this time.
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.
Loose Wet
Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.