Overview

• The FAA imposed ground stops at JFK, Newark Liberty and LaGuardia between mid-afternoon and early evening when a fast-moving thunderstorm swept through the region.
• Departure waits peaked at about 2 hours 35 minutes at JFK, 4 hours 31 minutes at Newark and two hours at LaGuardia as departures were held.
• Delays cascaded through the network, with Philadelphia flights facing 1 hour 15 minute tarmac waits and Reagan Washington National grounded until 5 p.m.
• FlightAware recorded over 6,000 delays and nearly 600 cancellations nationwide driven by the New York area ground stops.
• The FAA maintains a weather alert through 11:59 p.m. while it adjusts traffic management programs to help airlines clear the backlog.