Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
Up to 6” of snow fell over the last 24 hours with moderate variable winds. Wind slabs up to a foot thick have formed at middle and upper elevations on many aspects and cross-loaded terrain features. The danger will be highest on very steep upper elevation slopes exposed to the wind. Look for continued drifting snow today from westerly winds that could gust in the 30s mph. Look for shooting cracks around rocky outcrops, exposed convex rollovers, and steep gullies. Even small avalanches can knock you off your feet or sled and have high consequences if you’re above steep slopes or terrain traps. Ride lower-angle terrain out of the wind to avoid this problem.
Storm slab avalanches up to 6" are less likely but could still be possible today on sheltered terrain, most likely at middle elevations. New snow fell on a variety of surfaces, including melt freeze crusts on southerly aspects. Perform quick hand shear tests to assess new snow stability and continue to look for shooting cracks. Lower angle slopes will avoid this problem.
Shooting cracks provide a clear indication of unstable snow on wind loaded terrain.