Avalanche Forecast
Regions: South Columbia.
Keep an eye out for lingering wind slabs and variable ski quality.
Confidence
Moderate - Confidence is due to a stable weather pattern with little change expected. Uncertainty is due to limitations in the field data.
Weather Forecast
Sunday night: Cloudy with isolated flurries, alpine temperature -10 C, light southwest wind.
Monday: Cloudy with scattered flurries, up to 5 cm accumulation, alpine temperature -8 C, moderate southwest wind.
Tuesday: Flurries, 5-15 cm accumulation, alpine temperature -6 C, moderate southwest wind.
Wednesday: Flurries, 10-15 cm accumulation, alpine temperature -4 C, moderate southwest wind.
Avalanche Summary
Avalanches are decreasing in likelihood, but it still may be possible to trigger wind slabs in isolated pockets in the alpine. This MIN report identifies pockets of windslab and highlights ski quality hazards.
Snowpack Summary
Snow line sits around 1200 m, and snow depths range from 60-110 cm at treeline elevations.
Recent wind affect on surface snow can be found at all elevations, and old, hard windslabs are found in the alpine and around ridgline. These slabs could be more reactive where they overly a weak layer of surface hoar (feathery crystals) that formed on a crust. The last week of cold temperatures has been slowly decreasing the strength of the upper snowpack.
A variety of crusts from late October are buried deeper in the snowpack (down 40-80 cm). Generally, the inactive weather pattern over the past week has improved overall snowpack stability in the short term.
Avalanche Problems
Wind Slabs
In alpine terrain and around ridge features, hard wind slabs may linger.
Aspects: All aspects.
Elevations: Alpine.
Likelihood: Unlikely - Possible
Expected Size: 1 - 1.5