Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
You can trigger an avalanche in recently wind-drifted snow on steep slopes at higher elevations. You are most likely to encounter a dangerous, wind-loaded slope above the treeline just below a ridge or in a gully or couloir. If you notice signs that the slope you are on or near might be wind-loaded, such as cracking in the snow or fresh cornice growth above the slope, consider staying on low-angle terrain or moving to a more wind-sheltered slope.
You can also trigger a long-running loose avalanche on shady slopes. These avalanches will start small in the new snow and gouge into weak, old snow gaining enough mass and momentum to knock you over and take you for a ride. If you are traveling on shady slopes steeper than about 40 degrees you should take steps to avoid being caught and carried in a small loose avalanche. The easiest way to do this is by letting the avalanche run its course down the slope and then traveling down or across it.