The developing storm slabs are expected to be reactive to human triggers on Monday. Careful terrain selection and route finding will be required to effectively manage risk.
25-35 cm. of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.
SUNDAY NIGHT: 5-10 cm snow, moderate southwest wind, alpine temperature -8 C, freezing level below valley bottom.
MONDAY: Mostly cloudy with possible flurries; 0-5 cm, light west wind, alpine temperature -5 C, freezing level 700 m
TUESDAY: Mostly cloudy, light to moderate west wind, alpine temperature -6 C, freezing level 700 m.
WEDNESDAY: Mix of sun and cloud, light to moderate west wind, alpine temperature -3 C, freezing level rising to 1200 m.
On Saturday the new snow was reported as being reactive to skier traffic as a very thin soft slab, especially in wind affected terrain. These slabs will become increasingly touchy as the new snow stacks up and settles into a cohesive slab.
15-25 cm of recent snow has buried a widespread layer of surface hoar (size 10-20 mm.). This layer exists at all elevations. This same layer of surface hoar has been reported as sitting on a thin sun crust on solar aspects which is a particularly nasty combination. The new snow will likely become increasingly reactive to human triggers as it stacks up and settles into a cohesive slab. The early February rain crust down 70-100 cm. is another prominent layer in the upper snowpack that requires monitoring, though there have been no recent avalanches on this layer. The mid and lower snowpack is generally well settled and strong.
