Avalanche Forecast
Issued: Dec 23rd, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
wlewis,
Avalanche Canada
Approach ridgelines carefully, wind affected snow may still be reactive to human triggers.
Summary
Confidence
Avalanche Summary
No recent avalanches have been reported, we expect some natural avalanche activity may have occurred during the recent storm.
If you do go into the backcountry, consider submitting a Mountain Information Network report.
Snowpack Summary
10-20 cm of storm snow has fallen over previously wind-affected surfaces at higher elevations.
Lower elevations received mostly rain and are likely to have moist snow or a surface crust.
Two different surface hoar layers have been reported in the upper snowpack (up to 40 cm deep) and appear to be most prominent at treeline and below. Snowpack depths at treeline are 50 to 100 cm.
Weather Summary
Saturday Night
Partly cloudy with possible flurries, southerly winds 50 km/h. Freezing levels at valley bottom.
Sunday
Increasing cloud with easing southerly winds, 60 km/h. Possible flurries. Freezing levels remain around 500 m. Treeline temperatures near -7 °C.
Monday
Mostly cloudy with southerly winds, 60-90 km/h. Flurries deliver up to 3 cm. Freezing levels rise to 1000 m, treeline temperatures around -3 °C.
Tuesday
Cloudy, with southwest winds, 50 km/h. Freezing levels reach 1500 m with treeline temperatures around +1 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
- Carefully assess open slopes and convex rolls where buried surface hoar may be preserved.
Problems
Wind Slabs
Slabs are likely small but may continue to be reactive to human triggers.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Buried surface hoar can be found 30-50 cm below the snow surface. It is reported to be deeper and more reactive in the western part of the region.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 24th, 2023 4:00PM
