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 possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Regions
South Coast.
As the storm eases off, the snowpack is beginning to gain some strength. However, storm slabs are still likely to be encountered at upper elevations and could be reactive to human triggering, especially in wind loaded areas.
Confidence
Moderate -
Weather Forecast
WEDNESDAY NIGHT - Mainly cloudy / northwest winds,10-20 km/h / alpine low temperature near -1THURSDAY - Mainly cloudy / northwest winds, 20-30 km/h / alpine high temperature near -1 / freezing level 800 m / alpine temperature inversionFRIDAY - Cloudy with sunny periods / northwest winds, 20-30 km/h / alpine high temperature near 0 / freezing level 800 m / alpine temperature inversionSATURDAY - Cloudy with sunny periods / northwest winds, 20-30 km/h / alpine high temperature near +5 / freezing level 3100 m
Avalanche Summary
A few size 1 explosives triggered avalanches were reported in the region on Wednesday.Please submit any observations you have to the Mountain Information Network here.
Snowpack Summary
30-50 cm of new snow mixed with rain has fallen over the South Coast region recently. This new snow likely sits on a melt-freeze crust at treeline and below. Expect to find a breakable melt-freeze crust on the surface below approximately 1300 m. At upper elevations, where the recent precipitation fell as snow, over 130 cm has accumulated since the stormy weather began last week. At upper elevations in the north of the region near Squamish, there may be a weak layer of surface hoar (feathery crystals) buried approximately 80-100 cm. Information on the strength and distribution of this layer is very limited.
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.