- Date Issued
- Sunday, December 3, 2023
- Valid Until
- Monday, December 4, 2023
- Prepared by
Terrain and Travel Advice
- Storm slab size and sensitivity to triggering will likely increase through the day.
- Carefully assess open slopes and convex rolls where buried surface hoar may be preserved.
- Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.
Avalanche Problem 1: Storm slab
New snow is forming rider triggerable storm slabs. The most reactive slabs will be found at treeline where surface hoar is most preserved.
No recent avalanches have been reported in our region.
Consider supporting your backcountry community by submitting your own observation in a MIN report.
Up to 30 cm of recent low density snow could have formed storm slab in the alpine and treeline on terrain features that are above threshold for avalanches. This new snow overlies large surface hoar in sheltered terrain.
At treeline, the height of snow ranges from approximately 60 to 90 cm. Below this elevation, snow height decreases drastically. The snowpack at all elevations is very shallow and contains many potential hazards just beneath the surface.
Partly cloudy with trace amounts of new snow expected, south alpine wind 25 to 40 km/h, treeline temperature -8°C.
Mostly cloudy, up to 10 cm of new snow expected, southwest alpine wind 40 to 60 km/h, treeline temperature -6°C.
Mostly cloudy with up to 10 cm of new snow expected, southwest alpine wind 25 to 50 km/h, freezing level up to 1700 m.
Cloudy , 10 to 20 cm of new snow expected, south alpine wind 40 to 60 km/h, freezing level rising to 2100 m.
More details can be found in the Mountain Weather Forecast.
- Uncertainty is due to the limited number of field observations.
- We are confident the likelihood of avalanche will increase with the arrival of the forecast weather.