OK, it's the biggest storm we've seen in a while. There are Blizzard Watches for the Uintas and east Tavaputs Plateau, this coming out of the Grand Junction NWS. Winter Storm Watch for most of the mountains, excluding the northern Wasatch, and High Wind Watches.
One model has been showing significant downslope with an easterly flow, which would limit rain and snow on the west side of the Wasatch. If the low passes a little farther north, this would yield stronger downslope, but I'm thinking it's more of a southerly track which would be more NE to NW flow. Either way, the eastern mountains and faces should see more snow in the northern part of the state, with the SW mountains getting more of the west flow. NWS forecasted up to 30" in the watch areas, but I'm thinking that's moreso for the Uintas. Most of the central and southern Wasatch should get between 12-24". There seems to be a bullseye of precipitation around Cedar City over to Beaver, which could get up to 12" along I-15 over the southern passes. Temperatures should cool through the afternoon and evening, as the precip blossoms and the colder temps work in. Snow levels should start up around 8000, but by early evening, drop to around 5000. IF the downsloping limits precip, it will be at the onset of the storm. But when the low passes to our east, inevitably the wind will switch to the NW simultaneously with the colder air moving in. Any wrap around precip will mean snow down to the Valleys, and a slushy couple of inches possible Monday night. All the models and soundings take temps below 32 for SLC by Monday Night.
Davis and Weber Counties should see the strongest downsloping winds overnight. 60+ is a possibility. Everywhere, it will be a windy evening and overnight. Rain and snow should begin to taper off through the early AM hours, but strong wind will continue through the morning hours before easing up late on Tuesday.