Moderate southwest wind may build fresh and touchy wind slabs overnight in lee terrain features in the alpine and at treeline. Recent reported loose dry avalanches are still small but grow in size.
Light to moderate southwest wind Thursday night may form fresh wind slabs in lee terrain features in the alpine and exposed treeline.
Loose dry avalanches might run longer than expected.
THURSDAY NIGHT: Cloudy, up to 5 cm new snow, light to moderate southwest wind, treeline temperature -5 C.
FRIDAY: Mainly cloudy with sunny breaks, up to 3 cm new snow, light southwest wind, treeline temperature -5 C.
SATURDAY: Mainly cloudy with scattered flurries, up to 3 cm new snow, light to moderate southwest wind, treeline temperature -8 C.
SUNDAY: Mix of sun and clouds, up to 2 cm new snow, light to moderate southwest wind, treeline temperature -6 C.
Loose dry avalanches (sluffs) in steep alpine and treeline features were observed in the last few days. Artificial triggers (explosives) released small loose dry and slab avalanches in the alpine on Thursday.
10-20 cm low density snow have added to the recent snow which has buried surface hoar and other old surfaces. In the alpine, new snow sits on top of layers of hard wind slab, scoured areas, sastrugi and isolated pockets of soft snow. A hard crust is found up to 1800 m.
A solid mid-pack sits above a deeply buried crust and facet layers near the bottom of the snowpack (150-200 cm deep), which are currently unreactive.
