Chicago, Illinois – Scattered thunderstorms are expected to intensify across central and southern parts of Illinois through 9 p.m. Monday, especially along and south of Interstate 80, bringing damaging winds, frequent lightning, and the potential for localized flooding.
According to the National Weather Service Chicago, areas including Kankakee, Pontiac, and Paxton face a 25-50% chance of storm activity, with storm motion trending east-southeast at 30 mph. Stronger storms may bring wind gusts capable of snapping tree limbs, while heavy downpours could quickly overwhelm low-lying roads.
Cities north of I-80—including Rockford, Elgin, and Waukegan—can still expect isolated thunderstorm coverage, but impacts will be less widespread. Residents in Joliet, Ottawa, and Valparaiso are urged to monitor conditions closely as storms could develop rapidly with little warning.
Motorists should reduce speed during heavy rain and avoid water-covered roads. Keep phones charged, and enable wireless alerts for timely warnings.
Storm coverage should diminish after 9 p.m., but the National Weather Service warns that additional storm activity is possible overnight into Tuesday. Stay weather-aware and indoors if thunder roars.
