The storm system swatted down power lines and uprooted trees, flicked big rigs on their sides and yanked off part of the terminal roof at Oklahoma City's Will Rogers World Airport, where some 1, 500 area residents had taken shelter in a tunnel.
Steven Spielberg and Tom Hanks will kick off the festival with The Terminal - a romantic comedy with Catherine Zeta Jones about a traveller stranded by political upheaval in his own country for nine months in a New York airport.