CHICAGO — A wide band of slow-moving showers and thunderstorms produced heavy rainfall and flash flooding in portions of Illinois and northwestern Indiana on Saturday morning.
One- to 2-inch rains caused localized flooding in portions of Winnebago, Boone, McHenry and northern Cook Counties with heavy rains on either side of the Intestate-80 corridor. Several roads flooded and traffic was rerouted.
Showers and thunderstorms diminished Saturday morning. The could possibly redevelop later Saturday night into Sunday morning.
The National Storm Prediction and Weather Prediction Centers continue to hold the Chicago area in a "Marginal Risk" for the next 24 hours. That means the green-shaded areas on the attached maps could experience strong or severe storms with damaging winds, hail and downpours.