Avalanche Forecast
Issued: Nov 21st, 2024 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs.
Avalanche Canada,
Avalanche Canada
A tricky avalanche problem exists. If triggered it could be very dangerous.
Stick to low-angle slopes free from terrain traps.
Summary
Confidence
Low
Avalanche Summary
No new avalanches were reported on Wednesday or Thursday.
On Tuesday, 2 large (size 2) avalanches were triggered in the alpine near Invermere. They failed on a crust with facets near the base of the snowpack. Also, numerous small and large (size 1-2.5) natural storm slabs were seen near Jumbo.
Snowpack Summary
Up to 50 cm of recent snow sits on a layer of surface hoar on shaded slopes, or a thin crust on sunny slopes.
Near the base of the snowpack there is a crust from early November. In shallower spots, facets have been found on the crust and avalanches have been occurring on this layer.
Typical snowpack depths in the alpine are 80-120 cm.
Weather Summary
Thursday Night
Cloudy with 2 cm of snow. 10 to 20 km/h south ridgetop wind. Treeline temperature -8 °C.
Friday
Cloudy with 5 to 10 cm of snow. 10 km/h southeast ridgetop wind. Treeline temperature -5 °C.
SaturdayMix of sun and cloud with up to 5 cm of snow. 5 km/h west ridgetop wind. Treeline temperature -5 °C.
SundayMix of sun and cloud with up to 5 cm of snow. 10 km/h west ridgetop wind. Treeline temperature -6 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Choose simple, low-angle terrain without steep convex rolls.
- Avoid terrain traps such as gullies and cliffs where the consequence of any avalanche could be serious.
- Avoid lee and cross-loaded slopes in the alpine.
Problems
Persistent Slabs
Large avalanches are possible where weak, sugary facets sit on top of a crust near the base of the snowpack. This problem is most likely found in the alpine, in steep rocky areas.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 22nd, 2024 3:00PM
