Severe Storms and Tornado Warning Issued for Chicago Area
• A tornado warning is in effect for the Chicago area until 11:15 a.m. CDT on Tuesday, August 11, 2026, according to the National Weather Service (NWS). The storms are capable of producing destructive winds exceeding 75 mph (120 km/h), torrential rainfall, and potential flooding. At 10:30 a.m., warning sirens were heard across Chicago neighborhoods, and by 11:05 a.m., the heaviest storms had moved to the southwest suburbs and northwest Indiana, with some passing over Lake Michigan. Trained weather spotters and radar indicated a possible tornado in Flossmoor, Illinois, with winds measured at over 120 mph (193 km/h). This storm season has been particularly active, with Illinois nearing a record-breaking 200 tornadoes in
• Chicago has also experienced an unusually rainy summer, with over 20 inches (508 mm) of rainfall recorded at Midway Airport since June 1, compared to the seasonal average of 13 inches (330 mm).
Impact & Risks
The storms pose significant risks, including destructive winds, torrential rainfall, and potential tornadoes. Wind gusts of 80-90 mph (129-145 km/h) have been reported in the Chicago metro area, causing large trees to fall. Flooding is also a concern due to the heavy rainfall. Residents in the affected areas, particularly in south suburban Flossmoor and surrounding neighborhoods, are at risk of property damage and personal injury. The NWS will confirm any tornado activity in the coming days. This storm system adds to an already record-breaking tornado season in Illinois, increasing the urgency for residents to take precautions.
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