First, let's have a look at some of the winds out there. At 0018 UTC 16 May, several stations in the west desert and over the Great Salt Lake are reporting gusts in excess of 50 mph.
|0018 UTC 16 May MesoWest surface plot.|
Wind gusts in mph annotated.
The nearby UDOT traffic camera shows dusty conditions too.
Where is this dust coming from? Well, a lot of it appears to be coming from three point sources in southern Utah, as evident in this enhanced MODIS image.