Avalanche Forecast
Issued: Dec 15th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Deep Persistent Slabs.
Avalanche Canada,
Avalanche Canada
Avoiding large features and enjoying low-angle riding is a good way to manage a deep persistent problem.
Tune into conditions that change with aspect and elevation.
Summary
Confidence
Moderate
Avalanche Summary
No recent avalanche activity has been reported since Tuesday when a few natural wind slabs were observed in north-facing alpine terrain.
Observations are limited, please submit a MIN if you head into the backcountry!
Snowpack Summary
10 to 15 cm of wind-affected snow sits on sun crusts on south-facing slopes, surface hoar in sheltered areas, and previously wind-affected snow.
In the Invermere area, avalanches have been failing on weak faceted snow at the base of the snowpack. So far reports suggest this does not extend throughout the forecast region, but is likely found in shallow snowpack areas.
Treeline snow depths are generally 50 to 70 cm, with deeper wind-loaded pockets in the alpine.
Weather Summary
Sunday Night
Partly cloudy. 15 km/h southwest ridgetop wind. Treeline temperature -10 °C.
Monday
A mix of sun and cloud, increasing, with 1 cm of snow in the afternoon. 10 km/h south ridgetop wind. Treeline temperature -11 °C.
Tuesday
A mix of sun and cloud. 20 km/h southwest ridgetop wind. Treeline temperature -8 °C.
Wednesday
Mostly cloudy. 40 km/h southwest ridgetop wind. Treeline temperature -3 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Be alert to conditions that change with aspect and elevation.
- Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
- In areas where deep persistent slabs may exist, avoid shallow or variable depth snowpacks and slopes above cliffs.
Problems
Deep Persistent Slabs
Weak faceted snow at the base of the snowpack remains a concern primarily in the Invermere area. Avalanches have occurred on steep, smooth north-facing slopes where the snowpack is shallow and weak.
Aspects: North, North East, East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 16th, 2024 4:00PM
