Avalanche Forecast
Issued: Dec 11th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Avalanche Canada,
Avalanche Canada
Isolated pockets of wind slab may be found in the high alpine on north through east aspects.
The best riding conditions will be found in wind-sheltered terrain.
Summary
Confidence
High
Avalanche Summary
Tuesday was quiet with only one (size 2) glide slab. Reports indicate that it was a couple of days old. On Monday, a small skier-triggered (size 1) wind slab was reported with some small (less than size 1) wet loose avalanches seen from steep south-facing terrain.
Isolated wind slabs may be found on north through east-facing slopes in the alpine.
If you are going out in the backcountry, please consider sharing your observations on the Mountain Information Network (MIN).
Snowpack Summary
Surface hoar exists in wind-sheltered, open terrain at treeline and below. A thin melt-freeze crust may exist on south-facing slopes.
Above 1800 m on non-solar slopes, you can find 15 to 30 cm of snow above a thin crust. Below 1800 m, 5 to 10 cm of snow sits overtop a thicker and more robust crust.
Below the crust, there are no layers of concern in the well-settled snowpack.
Snow depths at treeline are around 100 to 170 cm near Whistler.
Weather Summary
Wednesday Night
Cloudy with clear periods. Treeline temperature -2 °C. Ridgetop wind light with gusts up to 40 km/hr from the south. Freezing level valley bottom.
Thursday
Cloudy with isolated flurries. 10 to 30 km/h southeast ridgetop wind. Treeline temperature -3 °C. Freezing level 1400 m.
Friday
Snow 5 to 15 cm. 25 to 45 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 1200 m.
Saturday
Snow up to 30 cm by the afternoon. 25 to 80 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 1200 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
- Be alert to conditions that change with aspect and elevation.
Problems
Wind Slabs
Slabs may be possible to trigger at high elevations where dry snow has been loaded into leeward terrain features.
Aspects: North, North East, East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 12th, 2024 4:00PM
