Avalanche Forecast
Issued: Dec 27th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Loose Wet.
kbakker,
Avalanche Canada
Watch for higher levels of snowfall on the west island and at higher elevations.
Storm problems will transition to wet snow problems as temperatures rise
Summary
Confidence
Moderate
Avalanche Summary
No new avalanches have been reported. Our field team did note some pinwheeling and loose wet debris was present while out on Wednesday.
Please help out your backcountry community by submitting a MIN report if you head out to the backcountry.
Snowpack Summary
10-30 cm of storm snow has fallen on a melt freeze crust that formed over the holidays. Above 1500 m this snow may remain dry and available for transport by the strong southerly winds forming wind slabs. Where the temperature has warmed above 0 °C, this snow will be moist to wet and settling rapidly. Beneath this there is moist snow to ground. Below treeline, you'll find dirt, or shallow and wet snow.
The current snow depth ranges from 70 to 120 cm at treeline, diminishing rapidly below 1000 m.
Weather Summary
Wednesday Night
Cloudy with 20-70 mm of precipitation, higher accumulation on the west side of the island. Freezing levels 1500 m, but snow may fall as low as 1000 m. Treeline temperature around 0°C. Southerly winds, 60-80 km/h.
Thursday
Cloudy with 10-25 mm of precipitation. Freezing levels rise to 1800 m. Treeline temperature around 4 °C. Southerly winds, 50-70 km/h.
Friday
Cloudy with 15-25mm of precipitation. Freezing levels rising to above mountain tops. Treeline temperature around 4 °C. Southerly winds, 60-80 km/h.
Saturday
Overcast with clouds breaking late in the day. Trace to 10 mm precipitation. Freezing levels falling to 1800 m. Treeline temperatures around 1 °C. Southerly winds, 40-60 km/h.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Minimize exposure during periods of heavy loading from rain.
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
- 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
Storm Slabs
Watch for increased wind loading and sensitivity on NW through NE aspects.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Watch for wet snow becoming reactive in steep terrain with the warming temperatures and rain.
Aspects: All aspects.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Valid until: Dec 28th, 2023 4:00PM
