Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1–2
We don't have a typical PNW snowpack right now, so don't treat this like your normal day out. It may not have snowed for a few days, but we've had rather cold temperatures atypical of this area that have resulted in very low density snow which will easily redistribute with wind. Unsual loading with easterly winds will develop wind slabs in places you might not normally find wind slabs.
A guide chose not to enter complex upper-elevation terrain on Friday because there was more wind redistributing snow than the forecast called for. They reported seeing small human-triggered wind slabs on the Arm in the Baker backcountry, and as the day progressed, wind slabs grew and became stiffer.
Your best indicators will be to look for actively blowing snow and watch where it's landing. Search for rippled or textured surfaces, or large, thick, smooth "pillows" to identify wind-affected snow. A scoured area and location with a thick drift may only be a few feet apart from each other. Search for other red flags like recent avalanches, long, shooting cracks and whumphs. Steer around large, steep slopes where you find any of these characteristics.
Take a moment to evaluate your strategy if you're in a steep area with a bad runout like cliffs, trees, rocks, or a gully below you. Getting caught in a slide and ending up encountering a terrain trap, even if the slide is small, usually doesn't have good outcomes.
(2/19/2026)
Long shooting cracks on an obvious wind feature. This was small and supported, so there wasn't an avalanche- even though a crown, flanks, and stauchwall were visible. This was an obvious clue that larger, unsupported slopes would probably result in an avalanche. Cascade Pass.
Photo: Irene Henninger