Wind Slabs
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Likely
- Taille
- 1–2
Wind slabs are expected to increase in size and reactivity throughout the day on Monday.
Carefully assess conditions as you travel.
We feel confident in the likelihood of wind slabs but uncertain in the likelihood of persistent slabs.
Wind slabs are expected to increase in size and reactivity throughout the day on Monday.
The new snow may tip the scales on week layers in the top 50 cm of the snowpack. These layers are most likely to be triggered in sheltered terrain where the upper snowpack feels “slabby”.
Over the past couple days numerous dry loose avalanches were observed in steep terrain. These avalanches were triggered naturally and by skiers.
On Friday, a couple natural cornice falls were reported, these occurred on north and east aspects.
By Monday afternoon up to 15 cm of fresh snow is expected. This new snow will be accompanied by strong southwest wind forming deeper deposits on north and east aspects. In sheltered terrain it will overlie up to 20 cm of facets.
There are 2 prominent weak layers in the upper snowpack
A surface hoar/crust layer buried early to mid-February is down 15 to 30 cm.
A facet/crust layer buried at the end of January is down roughly 30 to 50 cm.
Below this, the mid and lower snowpack are well settled with several crust layers.
Sunday Night
Mostly cloudy. 2 to 3 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -6 °C.
Monday
Mostly cloudy. 5 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -6 °C.
Tuesday
Mix of sun and clouds. 1 to 4 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -8 °C.
Wednesday
Mostly sunny. 1 cm of snow. 50 km/h west ridgetop wind. Treeline temperature -7 °C.
More details can be found in the Mountain Weather Forecast.