Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–1.5
You can trigger a small slab avalanche where you encounter around a foot or more of freshly wind-drifted snow on steep north through east to southeast-facing slopes at upper elevations. Even a small amount of moving snow can knock you off your feet and carry you into hazardous terrain further down the mountain. Avoid slopes steeper than about 35 degrees if you see cracking in the new snow. The insides of couloirs and below corniced ridges are likely places to find drifted snow.
As soon as the spring sun hits the new snow, you'll see sluffing off very steep, rocky slopes. Rollerballs, pinwheels, and wet, gloppy snow are precursors of this cycle. Avoid traveling on or directly below these slopes.
Researchers Ian McCammon and Sara Boilen are developing new tools for managing human factors for backcountry skiers and boarders. This survey asks about personal experiences with human factors and will take 7 - 8 minutes to fill out. Link is HERE. Thank you for your help!