"Severe Weather Alert: Freezing Rain and Ice Jams Threaten Central Illinois"

Chicago and surrounding areas are under a Winter Weather Advisory and Flood Warning due to freezing rain and thawing conditions, with a request for drivers to avoid travel. A dense fog is expected overnight, with non-freezing rain forecasted for Wednesday. Northwest Indiana, particularly Michigan City, is expected to be slick and slushy. The National Weather Service advises commuters to postpone travel or exercise caution due to slippery conditions.