The Federal Aviation Administration (FAA) issued a ground stop at Denver International Airport (DEN) on August 3, 2026, due to severe weather including thunderstorms and a cold front passage. The stop was initiated to manage the risk posed by high winds and turbulence affecting air traffic control in the Denver area.
Flight Diversions and Airline Operations
A total of 29 flights inbound to Denver were diverted to Colorado Springs Airport (COS). Passengers reported that airlines including Southwest Airlines, United Airlines, and SkyWest Airlines were involved in these operations. After the severe weather conditions began to subside, multiple aircraft repositioned back from Colorado Springs to Denver
in a steady sequence.
Severe Weather Conditions and Atmospheric Impacts
The weather event was triggered by a sudden cold front colliding with a preceding heat wave that resulted in a record high temperature of 102 degrees Fahrenheit at Denver International Airport, surpassing a previous record from 1878. The cold front brought severe thunderstorms, with wind gusts reaching up to 40 miles per hour and overnight temperatures dropping by 50 to 60 degrees. Smoke from wildfires in the Pacific Northwest contributed to low visibility and air quality alerts during the event.
Passenger Experience and Turbulence Injuries
Turbulence caused by the merging weather fronts produced harsh flying conditions. Five passengers on inbound flights
sustained injuries related to turbulence requiring medical treatment and ambulance transport, with one individual reported as stable in a hospital. Several passengers described the turbulence as the worst they had experienced. Delays and disruptions forced some travelers to switch to alternative ground transportation after flights were delayed or diverted.
Flight Delays, Cancellations, and Ongoing Disruptions
Approximately 40% of outbound flights and 32% of inbound flights at Denver International Airport were delayed due to the severe winds and weather conditions. Cancellations accounted for roughly 3% of total flight traffic. The FAA ground stop was reported by local news to have started around 3:25 p.m. and was expected
to last until about 6:30 p.m., with delays extending into midnight. Passengers faced lengthy waits both airborne and on the ground, with some flights stuck in the air for up to an hour and connecting flights missed.
