One of the more interesting aspects of last-nights storm was an intense wind-parallel band that developed as the frontal band moved out of the region.
The band developed shortly after 0300 UTC (0800 PM MST) and persisted for about 3 hours. It formed over the southeast corner of the Great Salt Lake, extended over the mountains north and east of the University of Utah, and into the eastern Uinta Mountains. Greatest impacts were probably along I-80 between Kimball Junction and Coalville. Tragically, the band largely missed the central Wasatch, as suggested by the 0419 UTC (0919 PM MST) radar image below.
What processes led to the development of this isolated, wind-parallel band? 700-mb temperatures were about -4ºC in the 0000 UTC sounding. Perhaps lower it some to -7ºC for a couple hours later. Lake temperature perhaps -2ºC. Thermodynamically, this isn't a situation where we would expect lake effect. Some digging is needed to understand this event.