The Federal Aviation Administration (FAA) implemented a ground stop for flights destined to Chicago O’Hare International Airport (ORD) and Chicago Midway Airport (MDW) on August 11, 2026, as severe storms swept through the region. The ground stop at O’Hare was scheduled to last until 11:15 a.m. Central Time but remained subject to extension depending on weather conditions. Midway Airport’s ground stop was active until at least 11:30 a.m. CT.
On August 11, an intense line of storms triggered destructive wind gusts reaching speeds up to 100 miles per hour across Illinois and Indiana. These extreme weather conditions caused downed trees
and power lines and produced flood warnings in the Chicago metropolitan area. Brief tornadoes accompanied the heavy rains, prompting emergency actions including the brief evacuation of Midway Airport’s control tower, confirmed by the Chicago Department of Aviation. The National Weather Service warned of these hazardous conditions as the storms moved through the region.
The severe weather disrupted air travel significantly, halting arrivals and departures as flights were grounded temporarily under FAA directives. After the ground stop at O’Hare lifted, a ground delay program continued until 10 p.m. CT. This extended restriction further delayed flights scheduled to land or depart from
the major hub, impacting airport traffic throughout the day.
FAA officials announced the initial ground stop at O’Hare would last until 11:15 a.m. CT and might be extended if adverse weather persisted. The Chicago Department of Aviation confirmed the control tower evacuation at Midway due to safety concerns amid the storms. These measures reflected the FAA’s efforts to maintain safety during hazardous weather impacting two of Chicago’s busiest airports.
