Mother Nature has been generous so far this year with 50" of snow so far at Alta and the Snowbird SNOTEL station up to a very solid 5" of snowpack water equivalent. Skiing conditions yesterday were very good. A few people elected to get out.
Most of the snow we've received so far this season has been produced by slow moving or stalled cold fronts or cold, postfrontal flows. That will change with our next system.
Below is the GFS forecast valid 1800 UTC 5 November (1200 MDT Saturday). Strong west-northwesterly upper-level flow extends from the eastern Pacific across the Pacific Northwest to northern Utah (upper left panel). Strong (by interior western US standards) water vapor transport extends inland across the northern Great Basin into northern Utah (lower right) with moist, westerly flow at crest level (lower left). 700-mb temperatures (lower left) are fairly mild and near -3.5˚C. Forecast precipitation along a weak surface trough that will sag through northern Utah Saturday night extends across southern Idaho.
The time height section through 6Z 6 November (midnight Sunday) shows the gradual descent of an elevated warm front today through tonight. By 1200 UTC 5 November (6 AM MDT Saturday), relative humidities except near the surface are generally at or above 90% through a deep layer. During the day tomorrow, the valley flow will be southerly to southeasterly, but westerly aloft. Eventually low-level winds shift to northwesterly after 0000 UTC 6 Nov (6 PM MDT Saturday) as the GFS sags the trough slowly southward through northern Utah.
Basically, this is a recipe for a warm, windy storm in the mountains and virga with occasional rain showers in the Salt Lake Valley Saturday and Saturday night, with precipitation rates likely greatest during the approach and passage of the trough.
There are, however, model disagreements on the timing and productivity of the storm. The 12Z HRRR is going off and shows strong enhancement of water-equivalent precipitation over the Wasatch through 1200 UTC 6 November (5 AM MST Sunday - note local time change) with 0.69" at KSLC, 0.73" at Cottonwood Heights, and 2.71" at Alta-Collins. Some big numbers are also evident in the northern and southern Wasatch. Most of this precipitation falls Saturday and Saturday night.