Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–1.5
Winds were moderate to strong on the east side of Mt Hood Friday night. 2-6" of recent snow will combine with any new snow to redistribute and will remain reactive at upper elevations. Pay attention to this problem as you begin to notice a patchwork of firmer, fresher snow drifts and exposed crust. These drifts could be reactive in areas where the deposits are 6" or thicker. You can trigger them on the downwind side of ridges or moraine features, particuarly on steep or poorly supported features even well below ridgelines. Small test slopes and quick snowpack tests can provide valuable data points about the reactivity of these slabs. Shooting cracks tell you how much a slab might propagate across a slope.
(3/28/2025)
Fresh wind-blown drifts alternate with older wet snow or a refreezing crust.
At upper elevations, these drifts will be large enough to take you for a ride.
Photo: Northwest Avalanche Center