Wind Slabs
- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Possible
- Tamaño
- 2
Westerly winds have been cranking the past few days, with overnight gusts above 90 mph. These strong winds have formed both soft and hard slabs of wind-drifted snow on upper and some exposed mid-elevation slopes. While these slabs are most prominent on leeward slopes, strong winds can load any aspect due to cross-loading from swirling and shifting wind directions.
With winds remaining elevated today, these soft and hard slabs will only continue to grow. Fresh slabs of wind drifted snow may be sensitive and 6 to 12 inches deep, possibly deeper in upper elevation alpine terrain. Watch for pillow-shaped deposits and avoid them. Signs of instability, such as shooting cracks, collapsing, and overhanging cornices, are clear indicators of wind-drifted snow and unstable terrain.
At the upper elevations, where winds have been gusting for days and slabs are becoming stiff, stubborn, and more supportable, they may allow travel farther onto the slope before signs of instability appear.