Avalanche Forecast
Issued: Dec 10th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs and Wind Slabs.
trettie,
Avalanche Canada
Continue to use caution at all elevations. We are uncertain of the reactivity of buried surface oar.
Summary
Confidence
Avalanche Summary
No recent avalanches have been reported.
If you do go into the backcountry, consider submitting a Mountain Information Network report.
Snowpack Summary
Up to 30 cm of recent storm snow has been redistributed by variable winds. This new snow will overlie a layer of surface hoar at 1200 m, below this elevation it overlies a crust.
Another surface hoar layer is down 40 to 60 cm. This layer could exist on all aspects and at all elevations.
In general, the snowpack is still shallow for this time of year with snowpack depths at treeline ranging from 50 to 100 cm. Early season hazards are still a concern.
Weather Summary
Sunday Night
Partly cloudy with trace amounts of new snow possible, southerly alpine wind 10 to 25 km/h, treeline temperature -6°C.
Monday
A mix of sun and cloud with no new snow expected, southwest alpine wind 15 to 30 km/h, treeline temperature -1°C.
Tuesday
Mostly cloudy with a few centimeters of new snow possible, south alpine wind 40 to 70 km/h, freezing level rising to 1400 m.
Wednesday
Cloudy with up to 5 cm of new snow expected, southwest alpine wind 30 to 60 km/h, freezing level falling to 700 m
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Carefully assess open slopes and convex rolls where buried surface hoar may be preserved.
- Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
- Recent wind has varied in direction so watch for wind slabs on all aspects.
- If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
Problems
Persistent Slabs
30 to 60 cm of previous storm snow is forming a slab over large surface hoar crystals. Surface hoar is more likely to be well preserved at treeline but could exist at all elevations.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Wind Slabs
Wind direction has been variable in the past day. Wind slab could exist on all aspects at treeline and above.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 11th, 2023 4:00PM
