National Weather Service United States Department of Commerce

Types of wintry weather will vary from north to south across the region the rest of the night, with mainly snow north, a mix of snow and sleet across much of the area, and mainly freezing rain from Calloway County Kentucky to southern portions of the Pennyrile region.
An Ice Storm Warning is now in effect until 6pm today for the Kentucky counties of Muhlenberg, Todd Christian, Trigg and Calloway. A Winter Storm Warning remain in effect until 6pm today for the rest of the region.
Periods of heavy snow, sometimes mixing with or changing over to sleet, are possible through the morning hours across portions of southeast Missouri, southern Illinois and southwest Indiana. Farther south, snow and sleet can both be expected, while portions of west Kentucky from Murray to Greenville will see freezing rain with occasional snow and sleet.
Freezing rain will likely produce ice accumulations of a quarter to half inch across southern portions of the Pennyrile region to Murray Kentucky, with lesser amounts just north and northwest of these areas. Much of southeast Missouri, extreme southern Illinois and the rest of west Kentucky is likely to see 1 to 2 inches of sleet.
A prolonged duration of dangerously cold temperatures and wind chills are forecast. A Cold Weather Advisory is in effect until 12 AM tonight and an Extreme Cold Warning has been issued from 12 AM tonight through 10 AM Tuesday Morning.