Wind Slabs
- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Possible
- Größe
- 3
It is possible to trigger hard slab avalanches of wind-drifted snow. Moderate winds in the past few days formed drifts in starting zones near ridgelines and around terrain features such as gullies, rocks, rollovers, and sub-ridges. Today's kick-up in wind speeds will continue to build hard slabs of wind-drifted snow. Wind slabs are often recognizable as rounded pillows of snow that can feel hollow or drum-like underfoot. You may see shooting cracks out in front of your skis or sled, but some harder slabs may allow you to get well out onto them before suddenly releasing.
- Collapsing or shooting cracks are clear signs of instability—but their absence does not mean the slope is safe.
- Avalanches of wind-drifted snow could step down into the buried January persistent weak layer, producing larger and more dangerous avalanches.