Wind Slabs
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Likely
- Dimensione
- 1–3
Over 3 feet of new snow has fallen at upper elevations since Wednesday afternoon. You can expect the size and depth of new snow problems to increase as you climb in elevation. At mid- and upper-elevations, where winds have drifted snow, thicker, more reactive slabs of new snow will have formed. Wind slabs will be soft, and it's unlikely you'll find the typical hard, hollow wind slab out there. Rather, you will find soft slabs of wind-drifted snow along the sides of steep gullies, near ridge lines, or in any wind-exposed terrain.
You can manage this problem by seeking lower-elevation, lower-angle terrain and avoiding gullies and terrain traps where avalanche debris could collect. Today is a day to make careful assessments and consider avoiding avalanche terrain, where natural avalanches large enough to bury a person are possible, and human-triggered avalanches are likely.
Springtime is variable and dynamic, making managing avalanche problems difficult, as conditions can change rapidly with aspect, elevation, and time of day. Low- and mid-elevations might appear safe, but could be threatened by avalanches above.
WET LOOSE:
If the sun comes out today, new snow will begin to shed, and natural loose snow slides will become possible. Craggy rocky outcroppings will begin to shed snow, and small point releases will entrain snow as they move downhill, creating large, dangerous avalanches. Avoid lingering under steep slopes late in the day, especially if the skies part, and as the day warms.
(4/20/2026)
Recent slides along the sides of a gully. These were likely storm slabs; there were signs of recent wind loading, like a scalloped and textured snow surface.
Photo: Hatcher Pass Avalanche Center