Wind Slabs
- Alta quota
- Limite del bosco
- Sotto il limite del bosco
- Probabilità
- Possible
- Dimensione
- 1–1.5
Wind scouring and wind textured snow surfaces were found yesterday throughout the forecast region. More of this is expected for today in near and above treeline areas. Winds have been variable, with NW to NE winds occurring post storm then last night a period of SE to SW winds in the strong to gale force range. With soft snow still available for wind transport, blowing snow and wind scouring will continue. Winds will shift to the W today and increase in speed and then to the NE late today, tonight, and through Tuesday. This is expected to be a strong NE wind event with wind gusts over 70-80mph along Sierra ridges. For today, new wind slab development could occur on any aspect in near and above treeline areas due to the variable wind speeds and directions.
Look for blowing snow, new cornice formation, wind pillows, and snow surface clues as to where new wind slabs are forming. Wind scouring is expected down to firm rain crust on wind exposed slopes which could pose travel hazards. Better snow quality will exist in wind protected below treeline terrain.
(1/5/2025)
Stronger than expected N-NE winds on Saturday night left wind scoured surfaces on many open areas. This snow was blown to the other side of the ridge.
Photo: Sierra Avalanche Center