Midwest Severe Weather Outbreak Threatens Iowa, Illinois, Missouri

The Storm Prediction Center has issued a severe thunderstorm watch for the Midwest, warning of damaging wind gusts up to 94 mph in Marshall County, Iowa, and a heightened tornado risk, including possible EF‑3 or stronger tornadoes, across northern Illinois and northeast Missouri. Large hail up to 2.5 inches in diameter and strong straight‑line winds are also expected.

Millions of residents from Kansas, Missouri, Iowa, Illinois, Indiana, Ohio and Michigan face the threat on Wednesday, June 16, 2026. Two main storm waves are forecast: an early‑morning line moving east from Iowa, followed by a second, potentially more intense, wave in the afternoon. The National Weather Service notes wind gusts above 80 mph already recorded before sunrise, and flash‑flood warnings have been posted for the Chicago metro area and surrounding regions as heavy rain could produce up to two inches per hour.

Forecasters emphasize that while the tornado outlook remains uncertain, widespread damaging winds are the most certain hazard. Residents are urged to stay alert for rapid‑change weather and to follow local warnings.