Expect visibilities will drop down to a mile or less, with northwest winds of 15 to 20 mph and gusts up to 25 mph. Expect some slick spots while driving this morning.
The following Missouri counties are affected: Bollinger, Butler, Cape Girardeau, Carter, Mississippi, New Madrid, Perry, Scott.
In Illinois, Alexander, Ballard and Union counties are also being warned.
The flood warning is for the Mississippi River at Cape Girardeau and Thebes, Ill., affecting Cape Girardeau, Petty and Scott counties as well as Alexander County, Ill.
Heavy rainfall has caused river levels on the Ohio River to rise.