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Tornado Warnings began around 3:30 p.m. in the southern part of Kankakee County and the northern part of Iroquois County in Illinois before moving quickly moving into Newton and Jasper counties in Indiana. The warnings have since expired.
Heavy rain and possible thunderstorms were forecast to bring some isolated pockets of flooding into Sunday evening.
Rain and storms continued through parts of Sunday afternoon, with a couple of strong storms south of and along I-80. Gusty winds were already the main concern before the storms also brought Tornado Warnings.
A confirmed tornado was observed near St. Anne, Illinois as it moved towards Northwest Indiana, according to radar data and the National Weather Service.
A Tornado Watch was also issued Sunday evening for most counties south of the Chicago area in Illinois and Indiana.
The severe storms caused damage across parts of the area, including Livingston County.
It's not yet clear whether what hit in Livingston was a tornado or something different, but debris left behind observed by ABC7 crews was part of a roof that was ripped off a home over a block away before it came to its landing spot. The Livingston County Sheriff's Department is still assessing the damage.
The roofs of not one, but at least two homes were ripped off in the Motorola Subdivision in Pontiac Sunday afternoon. A fast-moving storm raced through the area around 3 p.m., leaving debris, not just from the roofs, but from downed trees strewn all over the area. Sunday evening, repair crews remained on site, with much of the neighborhood pitch black.
Livingston County was battered by storms all day, and 23 miles away in the village of Forrest, a line of storms passed through Sunday morning leaving behind a downed tree.
"I heard a big crash at this end of the house," a resident named Tina said. "When I was able to come look this tree had come down and it put a hole in the roof of my house and a hole in the roof of my garage."
More significantly, part of the roof was torn off the gymnasium at Prairie Central Junior High School. Luckily, between the weekend and it being winter break, no one was inside at the time.
"We got some water damage on the inside but for now it looks like most of the damage was contained to the gymnasium," said Brian Quam, Sup.t of Prairie Central Schools. "The educational spaces are in good shape and unaffected."
The good news is at this point no injuries have been reported as a result of Sunday's storms.
As of 6:45 p.m., ComEd said 1,144 customers were without power due to the storms.
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Chicago airports were impacted Sunday morning as visibility was less than half a mile across the area. An AccuWeather Alert was issued in the early morning due to dense fog.
Multiple ground stops were issued at O'Hare Airport Sunday morning.
As of 6:45 p.m. Sunday, there were 108 flight cancellations at O'Hare with average delays of 42 minutes, and there were seven flight cancellations at Midway with average delays of 24 minutes, according the city's Department of Aviation.
A cold blast of air arrives Sunday night. Wind picks up in the evening, and it remains windy through Monday afternoon.
A Wind Advisory will be in effect between 6 p.m. to 3 p.m. on Monday.
Wind gusts will be between 45 to 55 miles per hour. That is enough to break tree branches which could lead to isolated power outages.
Wind chills will be between -5 to 10 degrees on Monday.
Light snow is possible with the blast of cold air Monday morning. Little to no accumulation is expected. Isolated slick spots are possible.
Wind chills will be below zero in some locations Monday morning.
The Chicago Department of Streets and Sanitation announced Sunday evening that it will be deploying salt-spreaders in response to the expected winter weather.