Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2
Strong easterly winds early in the storm cycle easily blew and drifted snow onto many slopes near treeline and above. Primary deposition occurred on slopes that face NW-N-NE-E. In our travels yesterday, we encountered drifts up to two feet deep. These fresh drifts remain sensitive to the weight of a human, and it is possible to trigger avalanches up to two feet deep. If you are navigating through alpine terrain today, keep an eye out for fat, rounded, pillowy looking slabs of snow. Wind-drifted snow is stiffer and more compacted than non-drifted snow, and you will feel the difference if you cross onto a wind slab. Shooting cracks in drifted snow are a sure sign of instability.