CHICAGO -- Due to a widespread computer outage, Southwest Airlines is experiencing massive delays, and almost all flights out of its Chicago hub are grounded, CBS Chicago reported.

Van Cleave reported that the FAA said that the airline issued a nationwide ground stop for all departing flights. The ground stop has been lifted and flights are beginning to move again.

CBS Chicago is being told that automated check-in and baggage systems are down and passengers are being checked in by hand on paper tickets.