Avalanche Forecast
Regions: Kootenay Boundary.
Confidence
Fair - Timing or intensity of solar radiation is uncertain on Sunday
Weather Forecast
Overnight: Temperatures will lower throughout the evening. Upper elevation winds should be light from the South west and below tree line winds should be light. Freezing level at valley bottom.Saturday: Sunny with some cloudy periods. Warm in the alpine with light westerly winds. Expect +5 degrees in the alpine with strong solar radiation. Freezing level to 2200 metres.Sunday: Southwest winds with a bit of cloud cover and cooler temperatures in the alpine. Freezing level down to about 1400 metres.Monday: Sunny, light Southwest winds and freezing levels to 1300 metres.
Avalanche Summary
No recent reports of avalanches in the K-B region, although neighboring regions are still reporting up to size 3 avalanches on E and SE slopes. We expect this to change significantly with the warming temperatures in the next few days.
Snowpack Summary
The North of the region received more storm snow over the past week than the rest of the region. The storm slab in the North is close to a metre thick and appears to be more touchy than in most of the rest of the region. The Rossland range has a shallower snowpack and weak basal facets continue to be a concern where wind slabs and storm slabs have added load above the weak layers. The forecast very warm alpine temperatures may result in a period of fairly rapid warming of wind and storm slabs above loose weak layers. Periods of strong solar radiation may cause moist or wet loose snow avalanches and/or cornice falls which may result in large additional loads above deeply buried weak layers.
Avalanche Problems
Wind Slabs
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood: Possible - Likely
Expected Size: 1 - 4
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Possible - Likely
Expected Size: 2 - 5
Deep Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Possible
Expected Size: 3 - 6