Avalanche Forecast
Kootenay Boundary
Steady precipitation over the coming days will gradually elevate the avalanche danger. There is uncertainty for the amount and type (snow or rain) and also for the freezing level during the period.
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Watch for signs of instability such as whumpfing, cracking, or moist/ wet surface snow.
- Observe for the bond of new snow with the old surface before committing into avalanche terrain.
Avalanche Problem 2: Loose Wet
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Warm temperatures and/or rain at lower elevations will weaken the surface snow and cause it to sluff in steep terrain.
Travel and Terrain Advice
- Use caution above cliffs and terrain traps where small avalanches may have severe consequences.
- Avoid steep slopes when air temperatures are warm or the solar radiation is strong.
Avalanche Summary
On Thursday and Friday, reports indicated loose dry and wet avalanche activity from steep slopes and terrain features at tree line to size 1.5.
No new avalanche observations reported on Wednesday.
Snowpack Summary
20-30cm of moist new snow is sitting on previous moist snow or crust surfaces . Recent winds from the southeast and southwest have sifted the new snow, forming isolated wind slabs in leeward terrain features and slopes. With freezing levels rising, surface snow will likely become moist through the day. The mid and lower snowpack is generally well-settled and strong.
Weather Forecast
SATURDAY: Mix of sun and cloud with flurries, accumulation 5-10cm mostly overnight Friday into Saturday / Light to moderate southwest wind / Alpine temperature 0 / Freezing level 1800m
SUNDAY: Cloudy with wet flurries, accumulation 5-10cm / Light southwest wind / Alpine temperature 3 / Freezing level 2100m
MONDAY: Periods of snow or rain, accumulation 10-20cm / Light west wind / Alpine temperature 0 / Freezing level 1700m
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Building storm slabs will likely be reactive to human triggers, especially as the snow totals accumulate through the forecast period. Isolated pockets of wind slab may exist behind ridge lines.