Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 2
The winds have been moderate to strong over the past few days. Combined with up to 27 inches of new snow now available for transport, these winds have formed and will continue to form slabs of wind-drifted snow on upper- and mid-elevation slopes. Slopes facing SE through N to NW are particularly susceptible. These slabs are most common near ridgelines and on mid-slope features such as gullies and convex rolls.
These smooth, rounded pillows of wind-drifted snow rest on the Dry January weak layer. Alone, they could catch and carry a rider, but when combined with the buried weak layers, they have the potential to trigger much larger avalanches.
Best Bet: Stick to sheltered, lower-angle terrain out of the wind. Watch for drifts, dunes, pillows, and wind-textured surfaces, as these indicate recent wind loading. If the snow beneath your feet sounds hollow, like styrofoam, this is a sign you may have found a slab.