Severe thunderstorms dumped heavy rain on parts of the Chicago area, with flooding on area roadways trapping cars and snarling traffic.
A flood advisory remains in effect for Cook County in Illinois and northern Lake County in northwest Indiana until 5:30 p.m., according to the National Weather Service.
Worst-hit among area expressways is the inbound Interstate 57 near 99th Street, with Illinois State Police confirming that multiple vehicles had been trapped by high water levels.
*note: The original report from ISP was that the Bishop Ford was seeing roadway flooding, but was later corrected
At least three lanes of the expressway are blocked at the scene, causing cascading impacts on multiple expressways.
Interstate 80 is seeing backed up traffic near Gougar Road due to flooding in the left lane of the roadway.
Elsewhere, flooding has closed Gougar Road in both directions between U.S. 30 and Francis Road in suburban New Lenox, according to officials.
A tornado watch remains in effect for most of northern Illinois and northwest Indiana until 9 p.m. Eastern time, according to the National Weather Service.
More rain could potentially fall in the late-afternoon hours, with thunderstorms continuing to fire in central Illinois. We will update this story with additional details as they become available.