SAVANNAH, Ga. (WSAV) — As of July of 2025, the United States has experienced the most flash flood warnings since the 1980’s. The National Weather Service (NWS) officially began tracking the data in 1980’s. In the Continental United States, which contains the lower 48 states, has experienced 3,466 warnings.

Severe storms moving into the Chicago area are bringing dangerous flash flood threats on Friday afternoon. There is a flash flood warning in effect for Cook and DuPage counties until 2:45 p.m. A ground stop has been issued at O'Hare Airport as storms move into the area.

Torrential rains nearing 5 inches in just a few hours led to flash flooding across parts of Chicago on Friday afternoon, snarling both traffic on the ground and in the air.