Heavy rain and thunderstorms are expected to sweep across Illinois tonight, especially in areas south of Interstate 80 (I-80). People living in towns like Joliet, Kankakee, and nearby communities should get ready for possible road flooding, strong winds, and power cuts during the early morning hours of Friday.
Storms to Bring Heavy Rain After 2 a.m.
The National Weather Service in Chicago has said that the strongest storms are likely to hit after 2 a.m. Friday, with most of the impact focused on places south of I-80. The biggest concern is heavy rainfall, which may lead to flash floods in low-lying spots, underpasses, and small streams or creeks that rise quickly.
All storms will also bring lightning and gusty winds, making overnight travel more risky, especially if roads become slippery or waterlogged.
Areas Most at Risk
People living in Will, Grundy, and Kankakee counties are being warned to stay off the roads overnight unless it’s absolutely necessary. If you see water covering the road, do not try to drive through it. “Turn around, don’t drown” is the key advice from officials.
Residents are advised to:
Charge phones and devices in case of power loss
Check local alerts for updates
Have backup travel routes ready if roads are closed
Stay inside during lightning or strong winds
Rain Totals Could Be Among Highest This Summer
This storm comes after a very wet July in Illinois, but tonight’s setup could bring some of the heaviest rainfall so far this summer. The Flash Flood Warning is active until at least 8 a.m. Friday morning, and more updates will be given if the situation gets worse.
If you live in the affected areas, make sure you are prepared, especially if you plan to travel early in the morning.
Thunderstorms are expected to move through Illinois overnight, mainly hitting areas south of I-80 after 2 a.m. The main risk is heavy rainfall, which can quickly flood roads, underpasses, and low-lying areas. With lightning and strong winds also expected, people in Will, Grundy, and Kankakee counties should stay indoors, charge their devices, and avoid driving unless absolutely necessary. Flash flood warnings will stay in effect until 8 a.m. Friday, so be alert and stay safe.
