Evansville, Indiana — One hundred sixty million Americans are prepared and monitoring what forecasters say is shaping up to be the largest snowstorm of the season, as winter storm warnings remain in effect across southern Illinois and portions of Indiana through Monday, Jan. 26.
For this region, the first phase of the storm is expected to fall primarily as heavy snow. According to the National Weather Service, much of southern Illinois and central and southern Indiana is likely to see snowfall totals approaching or exceeding one foot, particularly north of the Ohio River and along the Interstate 64 and Interstate 70 corridors.
The National Weather Service Weather Prediction Center places the southern Illinois–Indiana region within a high-confidence corridor for moderate to heavy snow impacts from Friday through Sunday. Snowfall rates may exceed one inch per hour at times, sharply reducing visibility and creating hazardous travel conditions along major routes, including Interstate 64, Interstate 70, Interstate 57, and Interstate 69.
Transportation officials warn that prolonged snowfall could lead to extended travel delays, disabled vehicles, and difficult conditions for emergency responders and freight traffic. Snow-covered highways, blowing snow, and rapidly changing conditions may make travel unsafe or impossible during peak snowfall, particularly overnight and early morning hours.
Residents are urged to complete storm preparations before conditions deteriorate, including stocking food, medications, and emergency supplies. Motorists are advised to avoid non-essential travel during periods of heavy snowfall and to monitor roadway conditions closely if travel cannot be postponed. Commuters, logistics workers, and manufacturing employees should expect disruptions that may extend into early next week.
Behind the storm, a surge of Arctic air is forecast to settle across southern Illinois, Indiana, and much of the Midwest. Temperatures are expected to plunge well below seasonal averages, with dangerous wind chills locking snowpack in place and prolonging hazardous conditions even after snowfall ends.
While a brief lull in snowfall is possible between Jan. 28 and Feb. 1, forecasters caution that the broader Midwest and East Coast will remain entrenched in a deep Arctic pattern into early February, limiting melting and extending winter impacts across the region.
