Avalanche Forecast
Issued: Dec 10th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Wet and Wind Slabs.
Avalanche Canada,
Avalanche Canada
Warm temperatures are increasing the chance of avalanches. Monitor the conditions and back off slopes as the surface becomes wet.
Reactive wind slabs may exist in high elevation terrain.
Summary
Confidence
Low
Avalanche Summary
There have been no recent reports in the region. We suspect the likelihood of avalanches has decreased substantially since the storm on the weekend, but rider-triggered wind slabs may still be possible at upper elevations on Wednesday.
Wet loose avalanches may be seen, especially from steep slopes facing the sun.
If you are going out in the backcountry, please consider sharing your observations on the Mountain Information Network (MIN).
Snowpack Summary
New surface hoar development exists in wind and sun sheltered, open terrain. At treeline and above, moist snow surfaces are seen on slopes facing the sun.
In the alpine, 20 to 40 cm of snow from the weekend sits above a thin crust. At lower 10-20 cm of snow sits above a a crust. The snow is moist below the crust.
Snow depths at treeline vary across the region. Around 90 cm is reported in the Coquihalla and 60 cm near Manning Park.
Weather Summary
Tuesday Night
Cloudy with clear periods. 15 to 30 km/h southwest ridgetop winds. Treeline temperature +3 °C. Freezing level 2500 m.
Wednesday
Cloudy with sunny periods. 15 to 25 km/h south ridgetop wind. Treeline temperature +5 °C. Freezing level 2500 m.
Thursday
A mix of sun and cloud with isolated wet flurries. 15 to 30 km/h south ridgetop wind. Treeline temperature +2 °C. Freezing level 1500 m.
Friday
Snow 5 to 15 cm. 15 km/h south ridgetop winds gusting to 50 km/h. Treeline temperature -2 °C. Freezing 1100 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
- Loose avalanches may start small, but they can grow and push you into dangerous terrain.
- Back off slopes as the surface becomes moist or wet with rising temperatures.
- If you are increasing your exposure to avalanche terrain, do it gradually as you gather information.
Problems
Loose Wet
A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.
Aspects: East, South East, South, South West, West.
Elevations: All elevations.
Likelihood
Expected Size
Wind Slabs
Wind 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 11th, 2024 4:00PM
