Pay attention once wind starts to blow, southeast winds and 15-30 cm of recent storm snow may form fresh wind slabs on lee features at upper elevations during the day on Monday.
As southeast winds increase through the day Monday, watch for small pockets of fresh wind slab forming on north and west slopes at upper elevations.
On Saturday, several rider triggered dry loose avalanches up to size 1 on steep treeline and alpine features. A few small natural and skier triggered wind slab avalanches were reported at treeline where the wind had built more cohesive pockets of snow.
If you head out in the backcountry, let us know what you are seeing by submitting a report to the Mountain Information Network.
15-30 cm of recent snow and light southwesterly wind may have formed small wind slabs on lee features at upper elevations.
Below the recent snow is a melt-freeze crust, existing on all aspects at treeline and below. The crust extends to mountain tops on sunny aspects. In north facing high alpine terrain the surface snow may have remained cold and dry.
The mid and lower snowpack are generally well settled and strong.
Sunday Night
Mostly cloudy with isolated flurries, trace accumulation. Light southeast ridgetop wind. Temperatures at treeline reach a low of -5 C. Freezing level 800 m.
Monday
Mainly sunny. Moderate southeast ridgetop wind. Temperatures at treeline reach a high of +2 C. Freezing level 1500 m
Tuesday
Sunny. Strong east ridgetop wind. Temperatures at treeline reach a high of +3 C. Freezing level 1700 m.
Wednesday
Sunny. Light northeast ridgetop wind. Temperatures at treeline reach a high of +4 C. Freezing level 1700 m.
More details can be found in the Mountain Weather Forecast.
