Thunderstorms caused several hours of delays for flights at Seattle-Tacoma International Airport on Thursday.
The Federal Aviation Administration (FAA) issued an alert around 9:45 a.m. It was supposed to be lifted at 11:15 a.m. but the FAA extended it through 1:45 p.m. The probability of another extension is 30 to 60%.
Grounding applies to departures from: Salt Lake City, Oakland, Edmonton, Vancouver, Calgary, Victoria, and Kelowna…