A cold front moving through will quickly cool things off this evening, possibly leading to slick surfaces as melted snow refreezes. Conditions will turn much colder beginning tomorrow with sub-zero wind chills expected during the next couple of mornings. #ILwx #INwx https://t.co/rGAiCgMyBx — NWS Chicago (@NWSChicago) Jan 12, 2025 January 12, 2025 at 03:27PM via Twitter https://twitter.com/NWSChicago