Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2
Strong southerly winds yesterday created slabs of drifted snow on leeward slopes near treeline and above. Westerly winds today will continue to move snow around. The problem will be most pronounced on upper elevation slopes with a north or easterly aspect, but isolated drifting or cross-loading may also occur on slopes with a southerly aspect. Look for fresh drifts on the leeward sides of ridge crests and terrain features such as gully walls and sub ridges. Shooting cracks in drifted snow are a sure sign of instability. Backcountry travelers should avoid steep slopes that have more than about 8" of recently deposited of wind drifted snow.