The Storm Prediction Center announced a slight risk warning for severe weather on Wednesday, August 26, 2026. The advisory covers possible isolated tornadoes and strong thunderstorms across portions of eastern Illinois, southern Will County, Kankakee County, northern Indiana, and a number of Chicago suburbs, including Lake, Kane, DuPage, LaSalle and Kendall counties.
Forecasters noted that the outlook follows a stretch of relatively calm weather in the region. The slight risk designation signals that atmospheric conditions could support the development of severe storms later in the week, though the threat remains limited in scope. The warning specifically highlights the potential for isolated tornadoes, which are expected to be scattered rather than widespread. Residents in the affected counties are advised to stay aware of changing weather patterns as the day progresses.
The advisory does not indicate a high probability of widespread damage, but it does call attention to the possibility of brief, intense wind gusts and heavy rain accompanying any storms that form. The Storm Prediction Center’s statement underscores that the risk area spans both rural and suburban communities, extending from the far southeastern edge of Cook County into neighboring states. Those in the designated zones should monitor local forecasts and be prepared to act should conditions deteriorate.