I was lucky in that it snowed 8" the night before our first day of skiing on Saturday Jan 6th at Snowbird. The base has quite a way to go to get the mtn fully opened, however there is quite a bit of skiing to be had. Most of the groomers were open and most of the expert runs were closed. However there was enough expert terrain open to easily make it interesting for a day or two. But bring your rock skis. On Sunday Jan 7th Alta was skiing much better, but there was lots that was closed and/or unskiable. But that day they opened the Backside, Baldy Shoulder and probably a few other areas. I didn't venture too far from the beaten path because I was skiing with my daughters. We skied Brighton on day 3 to 2pm to make our 5pm flight. After two days of somewhat harsh weather and visibility we were treated to a Utah bluebird day. The groomed runs were in excellent shape. Almost all were open. I would say about 50% or less of the advanced terrain was open. All the resorts were fairly quiet.
Here are photos of my 3 day trip to the Cottonwood Canyons in Salt Lake. The first group with blue sky is Brighton, then the next group of gray day pic.'s was taken at Alta, and the last group were taken at Snowbird during a flurry low vis day.