Avalanche Forecast
Issued: Dec 11th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Wet.
lbaker,
Avalanche Canada
Watch for signs of instability throughout the day as temperatures continue to rise well above 0 °C. Be careful with sluffing in steep terrain, especially above cliffs and terrain traps.
Summary
Confidence
Avalanche Summary
Several natural, size 1, loose wet avalanches were observed on all aspects on Sunday.
Thank you to everyone who has been sharing observations on the Mountain Information Network. All the information and photos are very appreciated by forecasters!
Snowpack Summary
10 to 25 cm of storm snow sits overtop a widespread thick rain crust. Below the crust, the snowpack is generally well consolidated.
Overall, the snow depth remains relatively shallow, creating challenging travel conditions and numerous hazards at or just below the snow surface across all elevations.
Weather Summary
Monday Night
Mainly clear with no precipitation, northwest alpine winds 10 km/h, treeline temperature -1 °C, freezing level 1000 m.
Tuesday
Clear skies with no precipitation, southwest alpine winds 20 to 30 km/h, treeline temperature 0 °C. An above freezing layer will build this afternoon and be present through the night from 1700 to 3000 m.
Wednesday
Mix of sun and cloud with no precipitation, southwest alpine winds 40 to 70 km/h, treeline temperature +1 °C, the above freezing layer remains present through the day, 1700 to 3000 m.
Thursday
Cloudy with scattered flurries 2 to 5 cm accumulation, northwest alpine winds 30 to 40 km/h, treeline temperature -2 °C, freezing level 1000 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for unstable snow on specific terrain features, especially when the snow is moist or wet.
- A moist or wet snow surface, pinwheeling and natural avalanches are all indicators of a weakening snowpack.
- Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.
Problems
Loose Wet
Up to 25 cm of recent snow, overlies a rain crust at all elevations which provides an excellent bed surface for avalanches. Watch for signs of instability increasing as temperatures rise through the day.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Dec 12th, 2023 4:00PM
