The next system to impact the region with snow is beginning to come together over Kansas. Low pressure at 500mb is closing off as it gets set to make the bend and push into Missouri tonight. Moisture is already being pulled northward and that will spread snow back into my area tonight, especially after midnight.
Occasional light to moderate snow should last into Friday (even Friday night over the area southeast of a line from roughly Dubuque to Cedar Rapids. In this area 2-6" are possible with the heaviest totals (5-6") along and east of the Mississippi including the Quad Cities. Some of the hi-res models have 7-8" from about the Quad Cities through most of Northern Illinois. Will need to watch that closely as a small shift in track could have significant implications.
While there are no advisories in effect now the NWS may have to pull the trigger at some time, especially from far eastern Iowa into Illinois. Here's the raw snowfall forecasts.
The 3k NAM
Again, the worst of this will be in the southeast half of the area and mainly later tonight and into Friday. By the way, here are some of the snowfall totals from yesterday thanks to the Iowa Mesonet.
Plenty more to come as I closely monitor the track of the system coming out of Kansas. There's still time for a slight change in track that could make a couple inches difference in snow totals. Roll weather...TS