Severe Thunderstorms Sweep Across Chicago Area, Winds Exceeding 80 mph Expected

S
Samuel Ward
Aug 11, 2026 Chicago

Severe Weather Alert for Chicago Area

Severe thunderstorms are rapidly advancing through the Chicago area, including multiple counties across Illinois, as forecasters anticipate winds exceeding 80 miles per hour. According to the National Weather Service (NWS), the storms are expected to affect Cook, DuPage, and Will counties on Tuesday morning, continuing into the afternoon hours.

Winds and Rainfall Projections

The NWS has issued a severe thunderstorm watch extending until approximately 2 p.m. today, with a total of 18 counties in Illinois expected to experience severe weather conditions. Areas notably impacted include Cook County and adjoining western and central regions such as Livingston County, Ford and Iroquois counties in east-central Illinois, as well as Boone, DeKalb, La Salle, Lee, Ogle, and Winnebago counties in the north-central part of the state.

In addition to the destructive winds reaching between 75 to 85 mph, residents may see significant rainfall, potentially accumulating to a quarter-inch or more. The storms are also accompanied by frequent lightning strikes and a risk of flooding in specific areas as heavy downpours occur.

Widespread Community Impact

The impact of these thunderstorms is not limited to Illinois; areas in northwest Indiana and parts of Wisconsin near the I-74 corridor are also under the threat of severe weather. The NWS has advised residents to fully prepare by maintaining weather awareness. “It’s crucial for individuals to closely monitor changing conditions throughout the morning and afternoon,” stated an NWS representative.

Travel Disruptions at O’Hare International Airport

The severe weather has already disrupted air travel, leading to significant ground delays at O’Hare International Airport. An FAA report indicates that arriving flights are facing average delays of around 2 hours and 24 minutes. Passengers traveling through O’Hare are urged to check with their airlines for updates, as conditions are likely to fluctuate as the day progresses.

Current Recommendations

Residents are encouraged to have several channels for receiving weather alerts and updates and to take caution as the storm front advances. As severe thunderstorms can develop rapidly, staying informed will be essential for safety.

As of now, the storm systems are still moving through the area, with severe weather alerts remaining in effect.