TODAY, Monday, December 15th — The Alta Avalanche Office is conducting explosive work in and around Supreme and Catherine's Pass areas. Please obey all uphill travel policies and be aware of explosive work around you as they prepare for opening Supreme.
This Morning: Temperatures remain mild for mid-December, in the low to mid 30's °F, with lower-elevation trailheads in the 20's °F where colder air sinks. Winds are blowing from the west and are light, less than 10 mph, with partly cloudy skies.
Today: Our unusual December weather continues, with temperatures rising into the 40's °F. Clearing skies this morning with clouds increasing during the afternoon. Winds will be from the west/northwest and light, gusting near 20 mph along the highest ridges, with increasing winds later this afternoon.
This Week: Active weather will return on Wednesday, with possibly 4-6 inches of warm, dense snow by Thursday morning. After a short break late this week, another warm storm is forecast for the weekend.
There is one to two feet of snow on northerly slopes, with south-facing slopes holding on to scraps of snow. The snowpack is supportable and travel is decent despite the thin snowpack. The photo below shows the setup along the Park City Ridgeline
Although no avalanches have been reported from the backcountry in a week, we continue to receive excellent observations on the current snowpack.
