People traveling to and from Seattle-Tacoma International Airport today can expect delays due to low ceilings and a temporary Air Traffic Control equipment outage, which has significantly reduced the hourly rate of planes arriving and taking off at Sea-Tac.

Some 90 Alaska Airlines and Virgin America flights scheduled to depart Seattle through noon have been delayed by up to two hours, affecting approximately 10,000 guests.

“Guests traveling through Seattle today should check the status of their flights before they leave for the airport,” said Todd Sproul, Alaska Airlines’ managing director of system operations control. “In the meantime, we’re working with the Port of Seattle and the FAA to restore normal operations as soon as possible.”

For more information about the Federal Aviation Administration and ATC delay, visit http://www.fly.faa.gov/flyfaa/usmap.jsp.