Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible - Likely
- Size
- 1–2
New snow and wind on Sunday will start to form small but reactive slabs in lee terrain features.
Fresh, reactive wind slabs will form throughout the day.
Buried weak layers mean that triggering large avalanches is possible!
New snow and wind on Sunday will start to form small but reactive slabs in lee terrain features.
Persistent weak layers in the upper snowpack remain a concern for human triggering. Where there is no supportive crust above, triggering these layers remains possible.
No new avalanches have been reported in the past few days.
If you head out in the backcountry, let us know what you're seeing by submitting a MIN report.
Up to 15 cm of new snow covers surface hoar and facetted snow from recent cold temperatures. In open areas, strong southerly winds will be redistributing new snow, creating wind slabs and wind-affected surfaces. A crust can be found below this snow up to 1500 m.
Two weak layers remain a concern:
A crust/facet layer buried early February down 90 to 120 cm.
A surface hoar layer buried mid-February down 60 to 90 cm.
Recent avalanche activity has involved these layers, with natural and human-triggered avalanches reported.
Below these layers, the remaining snowpack is generally well settled.
Saturday Night
Partly cloudy. 1 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -11 °C.
Sunday
Mostly cloudy. 1 to 5 cm of snow. 30 to 50 km/h south ridgetop wind. Treeline temperature -12 °C.
Monday
Mostly cloudy. 15 to 30 cm of snow. 70 to 100 km/h south ridgetop wind. Treeline temperature -5 °C.
Tuesday
Mix of sun and clouds. 1 to 15 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -7 °C.
More details can be found in the Mountain Weather Forecast.