Chicago, Illinois – A powerful winter storm is expected to impact much of Illinois and Indiana beginning Sunday night, bringing heavy snow, dangerous cold, and periods of ice that could significantly disrupt travel, utilities, and daily routines across the region through early next week.
According to the National Weather Service, snow will spread across Illinois late Sunday before expanding into Indiana overnight, becoming heavy at times through Monday. Arctic air surging in behind the storm is expected to drive temperatures well below normal, creating hazardous wind chills and increasing the risk of frostbite during overnight hours and early morning commutes.
The greatest travel impacts are expected along major corridors including Interstate 90, Interstate 80, Interstate 94, Interstate 70, and Interstate 65, where roads could quickly become snow-covered and icy. Northern Illinois and northwest Indiana face the highest potential for significant snow accumulation, while central and southern sections of both states could see periods of sleet or freezing rain capable of causing scattered power outages and downed tree limbs.
Officials urge residents to avoid non-essential travel during periods of heavy snow, prepare vehicles with winter emergency supplies, and ensure homes are ready for prolonged cold. Prolonged subfreezing temperatures may strain heating systems and increase the risk of frozen pipes.
Winter storm warnings and cold weather advisories are expected to remain in effect through Tuesday, with additional alerts possible as conditions continue to evolve across Illinois and Indiana.
