By nighttime standards, we had a pretty good frontal passage (fropa) last night. At KSLC, note the abrupt drop in temperature and increase in wind speed (with a gust to 49 mph) at about 0930 UTC (3:30 am MST).
The radar at this time showed an abrupt transition in radar reflectivity with considerable "clear air return" in the post-frontal environment.
It looks to be a bit dusty around the Salt Lake Valley this morning. Thus, it appears the strong post-frontal winds picked up some dust from Nevada and/or the West Desert and transported it into our area.