Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
New snow and wind will elevate the avalanche danger on Saturday. If you observe drifting snow from the wind you can be assured new wind slabs are being formed. Dune-like formations, pillows, and fresh cornices are all visual clues. Use small test slopes to look for signs of cracking as evidence that you should avoid steeper and more consequential slopes. Use extra caution around slopes leading into terrain traps, which could injure or bury a rider.
In many locations, the most recent snowfall is resting on a smooth crust, which provides an excellent bed surface. The new snow needs time to bond to the old snow interface.
(1/5/2025)
8100' NW, wind texture on the surface. This short steep slope did not crack or avalanche, indicating that it has gained strength since forming. You could still pick up a 6" thick slab, fist plus hardness.
Photo: Tom Whipple