Full Breakdown
Sinkhole Forces Closure of LaGuardia Runway 4/22
5/21/2026, 2:40:32 AM
Core Event: Immediate Runway Shutdown
At about 11 a.m. on Wednesday, the Port Authority of New York and New Jersey discovered a sinkhole near runway 4/22 at LaGuardia Airport during its routine morning inspection. The runway was shut down, and emergency construction and engineering crews were dispatched to assess the defect and begin repairs.
Background: Reclaimed Site, Sinking Runways, Recent Crash
LaGuardia sits on land reclaimed from the surrounding bay in the 1930s, a condition relevant to the broader issue of runway sinking. A 2025 industry report warned that airports worldwide face “uneven ground sinking,” with 3.5 million sq m of runway surface experiencing sinking and 14,000 sq m at high risk. Two months earlier, an Air Canada CRJ-900 struck a Port Authority fire truck on the same runway, killing two pilots.
Timeline of Discovery and Traffic Management
- 11:00 a.m.: Sinkhole identified; runway 4/22 closed.
- 11:15 a.m.–12:00 p.m.: Emergency crews mobilized, perimeter set.
- 3:00 p.m.: FAA instituted a traffic-management program, causing flights to average a 1 hour 37 minute delay.
- Evening: Thunderstorm watch prompted additional travel cautions.
Data on Runway Sinking
The 2025 report noted 3.5 million sq m of runway surface experiencing sinking and 14,000 sq m at high risk of structural damage.
Operational Impact: Delays and Weather Complications
Port Authority officials warned passengers of delays and cancellations, especially under a thunderstorm watch over New York City. Travelers were urged to check directly with airlines and allow extra time for security and parking.
Official Statements & Responses
LaGuardia’s X post stressed the immediate shutdown and the deployment of crews to repair the runway promptly. The Port Authority reiterated close communication with airlines and airport partners, pledging ongoing updates. The FAA’s traffic-management directive aimed to preserve safe arrival sequencing amid the runway outage and adverse weather.
Conflicting Reports & Gaps
All sources concur on the sinkhole’s discovery time and runway closure, but none reveal the geological cause. Repair schedule unspecified, and the 2025 report’s national sinking statistics lack a LaGuardia-specific breakdown.
Verbatim Quotes
- “The runway was immediately shut down, and emergency construction and engineering crews are onsite to determine the cause and complete necessary repairs as quickly and safely as possible,” — LaGuardia Airport, X post
- “Travelers should expect delays and cancellations, particularly with forecast thunderstorms expected later today, and are strongly encouraged to check directly with their airlines for the latest flight status information.” — Port Authority spokesperson
- “The Port Authority is in close communication with airlines and airport partners and will continue providing updates as conditions evolve,” — Port Authority spokesperson
- “At approximately 11 a.m., the Port Authority was conducting its daily morning inspection of LaGuardia’s airfield when crews identified a sinkhole near Runway 4/22.” — Port Authority (GB News)
What’s Next: Repairs and Monitoring
Port Authority engineers will continue excavating and stabilizing the runway segment while conducting a structural assessment. The FAA will keep the traffic-management program in place until the runway is cleared. Officials indicated a review of LaGuardia’s subsurface conditions may follow.
