Chicago is bracing for a weekend dominated by heavy rain and thunderstorms, prompting concerns about potential flooding and severe weather conditions. The National Weather Service has issued forecasts indicating a low-pressure system moving into the region, which is expected to unleash significant rainfall, ranging from 1 to 2 inches across the metropolitan area. However, localized areas may experience even higher amounts, elevating the risk of flash flooding, particularly in low-lying and urban zones with inadequate drainage systems.