Thunderstorms moved into the Chicago area Monday evening, accompanied by potentially gusty, damaging winds, the National Weather Service said.

The city remains under a flood watch until 4 a.m. Tuesday with the potential for flash flooding in the overnight hours, said Kevin Donofrio, an NWS science and operations officer.

A second wave of rainfall is expected in the city with winds of around 40 mph late Monday evening. That system is expected to bring 2 to 4 inches of rain. However, parts of the southwest suburbs are at a higher risk of flooding. Drivers are advised to take precautions.

Flash Flood Warning including Chicago IL, Joliet IL and Cicero IL until 11:15 PM CDT pic.twitter.com/G3Jh4w4wcf

— NWS Chicago (@NWSChicago) August 19, 2025

Strong winds and heavy rain over the weekend l

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