Alta ski area is closed to uphill traffic, including the Supreme area. However, the summer road is open to gain acesses to the backcountry at Catherine's pass. Brighton is allowing uphill traffic on their designated trails, check their website to find out where you can walk uphill. Every ski area has a different up hill policy, so with snow on the way, it's even more important to check with each area if you can go up hill and where.
Sunny, clear skies will continue to dominate over northern Utah as a ridge of high pressure sits off the coast of California. Over the next two days temperatures will rise into the 40's at upper elevations and dive into the mid to upper teens overnight. You can expect sunny skis with the occasional whispy cloud passing overhead. Winds have been calm and mainly from the northwest for the past 24 hrs. The winds will eventually shift to a more southerly direction as we do have an approaching series of storms that will impact northern Utah through the Holiday weekend. Read below for more info.
Riding and turning conditions are best on upper elevation lower angle grassy slopes. Here you will find supportable riding and some soft turns. Rocks and down trees remain the biggest hazard at this time.
No avalanche activity has been reported in the backcountry. Drew Hardesty and Evelyn Lees, both have great observations and some insight on the current snowpack found
HERE.