Avalanche Forecast
Issued: Dec 18th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
jpercival,
Avalanche Canada
Exercise caution when choosing terrain, especially in Alpine lee areas with significant loaded snow. Take time to discover how the new snow has bonded to existing surfaces.
Summary
Confidence
Avalanche Summary
No new avalanche activity has been reported since Wednesday.
Check out Sundays min report from the log cabin area.
Reported whumping and cracking near the Big Y drainage on Sunday. Check out this min report for more detail.
If you do go into the backcountry, consider submitting a Mountain Information Network report.
Snowpack Summary
Recent storm snow of up to 100 cm in the last 5 days combined with south wind redistribution, has led to wind packing on south slopes and deep wind deposition on north slopes. Below 1200 meter elevation, a thick crust is present approximately 50 cm above the ground. Snow depths varies from 75-250 cm depending on the aspect, while the mid and lower snowpack is presenting as settled and bonded.
Weather Summary
Monday Night
Partly cloudy, trace accumulation, ridgetop winds variable 10 km/h, treeline temperature -8 °C.
Tuesday
Sunny with cloudy periods, no accumulation, ridgetop winds south 15 km/h treeline temperature -12 °C.
Wednesday
Increasing clouds, 1 to 5 cm accumulation, ridgetop winds southwest 50 to 70 km/h, treeline temperature -12 °C.
Thursday
Increasing clouds, 5 to 10 cm accumulation, ridgetop winds southwest 50 to 70 km/h, treeline temperature -12 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid freshly wind loaded terrain features.
- Choose low-angled, sheltered terrain where new snow hasn't been wind-affected.
Problems
Wind Slabs
Moderate to strong southerly winds, combined with up to 20 cm of new snow, have produced reactive wind slabs in all exposed tree line and alpine features.
Reactive storm slabs should be expected in sheltered areas..
Aspects: North, North East, East, South East, South, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 19th, 2023 4:00PM
