Update at 6:30 p.m. — The ground stop at Reagan National has been lifted, but major delays are being reported. From the FAA:
Due to WEATHER / THUNDERSTORMS, there is a Traffic Management Program in effect for traffic arriving Ronald Reagan Washington National Airport, Washington, DC (DCA). This is causing some arriving flights to be delayed an average of 3 hours and 27 minutes. To see if you may be affected, select your departure airport and check “Delays by Destination”.
Earlier: Due to severe weather in the area, Reagan National Airport is under a “ground stop” — meaning no flights are arriving or departing.
Dulles International Airport and Baltimore-Washington International Airport are also under a ground stop.
Travelers heading to any local airport should expect significant delays as storms continue to move through the region.