On September 3, 2026, the Federal Aviation Administration (FAA) issued ground stops at 10 U.S. airports, including LaGuardia Airport, to address severe thunderstorms disrupting air traffic across the Northeast corridor. Ground stops require all departures to be halted from affected airports and are employed when the FAA Command Center lacks sufficient data to model a full Ground Delay Program.
Delays at Major Northeast Airports Amid Thunderstorms
LaGuardia Airport experienced average ground delays of 45 minutes as storms passed through the region. Newark Airport, also under a ground-delay program, endured average delays peaking at two hours. John F. Kennedy (JFK) Airport and LaGuardia were both operating under ground-delay
programs during the disruptions. Boston Logan Airport reported 19 delays amid thunderstorms on the same day. These disruptions followed elevated operational disruptions from thunderstorms over three consecutive days: September 1, 2, and 3, 2026.
Rare Multiday Severe Storm Impact Across Northeast and Mid-Atlantic
The cause of the disturbances was a rare multiday severe thunderstorm event affecting the Northeast and Mid-Atlantic regions. Thunderstorms impacted airspace around New York, Boston, Philadelphia, and Washington for three days straight, limiting arrivals and departures. Weather-related restrictions in these hubs created cascading effects throughout the national air traffic network, worsening congestion and delaying flights far beyond the storm zones.
Traveler Impact and Labor Day Weekend Disruptions
Flight operations at LaGuardia paused temporarily
due to the ground stops, which led to flight delays and cancellations. This occurred during the busy Labor Day weekend travel period when passenger volume is typically high. Airlines responded by issuing travel waivers, allowing affected passengers to reschedule flights without penalties. The FAA’s National Airspace System Status page monitored these delays and ground stops in real time during the ongoing weather events.
Increasing Frequency of Severe East Coast Aviation Disruptions
Severe thunderstorms impacting East Coast airports like LaGuardia, Newark, and Boston have become more common in summer and early fall. Ground stops across multiple major hubs cause cascading operational challenges by stranding crews and aircraft, prolonging delays
even after weather clears. The FAA continues to manage these disruptions to maintain system safety amid increasingly frequent severe weather events.
