New snow and wind are forming fresh slabs. We have uncertainty around the reactivity of two near-surface crusts. Take a conservative approach and investigate the bond at these interfaces before stepping into more committing terrain.
New snow and wind are forming fresh slabs over a thin crust. Recent snow under this crust is well-settled and dense and may remain reactive where it sits over a weak layer of surface hoar on a thicker crust. You can dig down to investigate the bond at these interfaces.
No recent reports.
Tuesday night: New snow 10-20 cm. Strong westerly wind. Freezing leveldropping 1500- 800 m.
Wednesday: A mix of sun and cloud. Strong northwest wind. Treeline high temperatures around -5. Freezing level 700 m.
Thursday: A mix of sun and cloud. Moderate northwest wind. Treeline high temperatures around -4. Freezing level 700 m.
Friday: Snow starting 5-10 cm. Strong southwest wind. Treeline high temperatures around -1. Freezing level 1000 m.
10-20 cm of overnight snow fell amid strong wind, likely loading deeper deposits into lee features at upper elevations. The new snow may sit over a thin crust that formed when 20-40 cm of recent snow warmed up on Tuesday. This recent snow may be sitting over a weak layer of surface hoar crystals or facets over a thick crust.
Recent indications of the region's snowpack suggest alpine depths around 150- 200 cm, depth tapering dramatically with elevation to about 40-80 cm at treeline. Below treeline is below threshold for avalanches.
