Avalanche Forecast
Issued: Dec 17th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
jleblanc,
Avalanche Canada
If you're getting out in the extreme cold, remember that freezing temperatures make for higher consequences.
Reverse loading will likely create small pockets of wind slabs in places you might not expect them.
Summary
Confidence
High
Avalanche Summary
No avalanches have been reported in these areas. This is likely due to the shallow snowpack limiting riding opportunities for the time being. If you venture into the backcountry, please consider submitting a MIN report, as it helps to strengthen our data gathering.
Snowpack Summary
Winds have shifted north Friday and Saturday, moving available snow back to south aspects and potentially creating fresh slabs. The snowpack is generally highly wind-affected, resulting in a wide variation in snowpack depths. Ridges and high points at upper elevations have been scoured, while deep loaded pockets on northerly slopes are up to 150 cm. Treeline snow depth range from 60 to 90 cm.
Weather Summary
An arctic front is sliding throughout the region. Gusty northerly outflow winds and cold temperatures will persist into next week. Dangerous wind chill values are expected.
Saturday night
Clear skies. No precipitation. North winds at 40 km/h. Temperatures dropping to -30ËšC.
Sunday
Clear skies. No precipitation. North winds at 40Â km/h at ridge tops. Temperatures near -30ËšC with the wind chill making it feel like -40ËšC.
Monday
Clear skies. No precipitation. Northeast winds at 30Â km/h at ridge tops. Temperatures near -32ËšC with the wind chill making it feel like -40ËšC.
Tuesday
Clear skies. No precipitation. Northeast winds at 20Â km/h at ridge tops. Temperatures near -34ËšC with the wind chill making it feel like -45ËšC
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Use ridges or ribs to avoid areas of wind loaded snow.
- Wind slabs are most reactive during their formation.
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
Problems
Wind Slabs
Strong outflow winds will have the potential to generate reverse loading and build pockets of wind slabs at alpine and upper treeline elevations. In frigid temperatures, slabs may take longer than usual to heal and bond to the snow below them. Avoid wind-loaded features during this time of continuous strong north winds.
Aspects: East, South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 18th, 2022 4:00PM
