Temperatures will continue to crash into the single-digits through the overnight. In fact, the National Weather Service has issued Wind Chill Advisories for our Illinois and most of our Indiana communities. The mercury will hover just above 0°; if you are factoring in the northernly breezes it will feel like sub-zero temperatures. Mostly cloudy skies will follow beyond your daybreak hours. Expect temperatures to remain in the mid-to-upper teens by the afternoon.
Our next major winter storm will be pivoting our way by the evening. Winter Storm Watches (more than likely upgraded to Warnings) will be in effect starting 6PM Sunday and last through 6AM Tuesday. Our latest timeline has light-to-moderate snow moving in from the southwest starting around 8PM. The snow will be working in two waves.
The first wave will move in through the evening and last through the predawn hours for Monday. This first wave will dump 1-2" for the entirety of the Tri-State. Snow will be on the ground and will impact your Monday morning drive. We catch a small break between the hours of 6AM and 8AM.
The second wave will move in by the early-afternoon and last through the overnight. Most of the second wave's snow will be contained for locations east of the Wabash River. With this in mind, we are forecasting lesser snow amounts for the Illinois communities (1"-3'). Areas along I-69 (HWY 41) will receive 3"-6" of snow (Henderson, Evansville, Princeton). Our southeastern-most communities, east of Highway 231 (Owensboro, Greenville, Tell City) will receive the heaviest accumulations of possibly 5"-7" or even locally higher amounts. The snowfall will end from west-to-east early Tuesday morning.
Details on amounts and timing are subject to change in the coming hours. We will keep you updated.