Just before 6 a.m., the Federal Aviation Administration had ordered all American Airlines flights grounded in the U.S. at the airline’s request.

The Federal Aviation Administration called a ground stop at DFW International Airport on the morning of Christmas Eve due to weather and

The Federal Aviation Administration said American Airlines requested a ground stop for all of its flights for one hour early Tuesday, Dec. 24 due to a “vendor technological issue.” On top of that, thunderstorms are expected to roll in before noon. The Fort Worth area is already under a flash flood warning until 11:30 a.m.