Continuously monitor conditions as you move through terrain.
Storm slabs may be more reactive at higher elevations.
Rider triggerable storm slabs may still be found at higher elevations. The largest and most reactive slabs will likely be found on northerly aspects.
No new avalanches have been reported but observations are limited. We suspect a natural avalanche cycle took place overnight on December 17th during the peak of the storm.
If you are going out in the backcountry, please consider sharing your observations to the Mountain Information Network (MIN)
By early morning on the 18th 20 to 40 mm of precipitation fell in less than 24 hours. Below treeline the majority of this precipitation fell as rain, saturating the upper snowpack. In the alpine most of this precipitation fell as snow and was accompanied by southerly winds likely forming deep deposits on northerly aspects.
In the alpine, an estimated 40 to 80 cm of snow sits above a thin crust.
Snow depths at treeline vary across the region. Around 140 cm is reported in the Coquihalla and 85 cm near Manning Park.
Wednesday Night
Mostly cloudy. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C.
Thursday
Mostly cloudy with around 5 mm of rain expected. 40 to 60 km/h south ridgetop wind. Freezing level rising to 1900 m.
Friday
Mix of sun and cloud with around 5 mm of rain by early morning. 20 to 40 km/h south ridgetop wind. Freezing level rising to 2300 m.
Saturday
Mix of sun and cloud with light rain. 30 to 50 km/h south ridgetop wind. Freezing level rising to 1900 m.
More details can be found in the Mountain Weather Forecast.
