Storm Slabs
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Likely
- Taille
- 1–2
Fresh snow may be creating storm slabs. Expect these slabs to be deeper and more reactive on leeward slopes.
Expect variable conditions with snow, wind, and rain continuing.
Terrain that was sheltered from the wind and wasn't rained on should hold good riding and lower avalanche danger.
Fresh snow may be creating storm slabs. Expect these slabs to be deeper and more reactive on leeward slopes.
In some places, rain could be falling on fresh snow. If you are encountering wet, heavy snow on the surface, loose wet avalanches will be likely.
We don't have any direct observations in this forecast area.
Looking forward to Wednesday, another dose of new snow and moderate to strong winds will make slab avalanches likely around treeline and above.
If you are getting out in the backcountry, consider making a post on the MIN (Mountain Information Network). You can share riding conditions, avalanche or snowpack observations, or even just a photo or two.
Up to 35 cm of recent snow and moderate to strong southwest and west wind may have formed reactive wind slabs on leeward slopes in the alpine. Depending on the exact freezing level, surface snow may be moist or soaked with rain at treeline and below.
A layer of weak, feathery crystals buried in mid November is 40 to 60 cm deep in sheltered treeline terrain.
Below 1400 m, a 2 to 10 cm rain crust sits 40 to 60 cm down.
Above treeline, the snowpack is roughly 200 cm, tapering steadily with elevation to around 30 cm at valley bottom, where many early-season hazards remain just below the surface.
Tuesday Night
Cloudy. 2 to 5 mm of precipitation as snow or rain at treeline. 30 km/h southwest ridgetop wind. Average treeline temperature -1 °C. Freezing level 1100 m.
Wednesday
Cloudy. 15 to 20 mm of precipitation as snow or rain at treeline. 40-60 km/h southwest ridgetop wind. Average treeline temperature -1 °C. Freezing level 1000 m.
Thursday
Mostly cloudy. 5 mm of precipitation as snow or rain at treeline. 30 km/h southwest ridgetop wind. Average treeline temperature 1 °C. Freezing level 1500 m.
Friday
Mostly cloudy. 15 to 20 mm of precipitation as snow or rain at treeline. 30 km/h southwest ridgetop wind. Average treeline temperature 0 °C. Freezing level 1300 m.
More details can be found in the Mountain Weather Forecast.