Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–1.5
Winter weather is hanging on, and the Cascades are in store for another round of snow and strong winds. This storm isn't quite as big of a snow producer as the last storm, but the east slopes of the Cascades could pick up 3-6inches of new snow, with higher amounts as you get close to the Crest. The strong winds will likely develop stiff wind slabs on all aspects at upper elevations. With wind speeds forecasted into the 30-40mph range, these slabs may form in unusual places and further downslope than you may expect. With more snow likely to accumulate near the Crest, wind slabs may be larger as you approach the West South and East South zone border. Use visual clues to identify wind-affected snow, such as actively blowing snow, textured surfaces, cornices, or drifts around rocks and trees. You can also use quick hand pits to dig down and identify wind stiffened snow over softer snow. If you see signs of instability such as shooting cracks or collapsing, stick to lower angle slopes or wind-sheltered terrain.
Rough surfaces and a thin snowpack limit avalanche hazard at lower elevations throughout the zone.
(1/9/2022) Example of small wind slabs in steep, consequential terrain. Photo: Katie Warren