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Summary
Confidence
Moderate - Due to the number of field observations
Weather Forecast
Mainly clear skies are forecast for Wednesday and Thursday morning. Increased cloud is expected throughout the day on Thursday with 10-30cm of new snow falling between Thursday afternoon and Friday morning. Ridgetop winds should be light to moderate from the north on Wednesday, switching to strong and southwesterly with Thursday's snowfall. Freezing levels should hover around 500m for the forecast period. For a more detailed weather overview, check-out our Mountain Weather Forecast at: avalanche.ca/weather
Avalanche Summary
On Monday there were a few reports of small loose wet avalanches running on steep, sun-exposed slopes. They occurred in response to solar radiation and brief warming. On Tuesday, we received reports of human-triggered wind slab activity to size 1 on exposed convex rolls at treeline and in the alpine.
Snowpack Summary
On Tuesday, 5-10cm of low-density snow was redistributed by winds into new wind slabs at treeline and in the alpine. These new wind slabs overlie 40-50cm of storm snow from last weekend. Limited observations suggest the recent storm snow has gained considerable strength, although I'd continue to be wary of lingering pockets of wind slab on high elevation, wind-loaded slopes. On steep, south-facing terrain you may find a sun crust from solar warming on Monday. Below 2200m, a hard rain crust can be found approximately 120cm below the surface.
jlammers,
Avalanche Canada
