NEW : Truck driver seriously hurt when rig picked up . Female motorist missing in Austin , Texas . Operations at Dallas ' Love Field airport were shut down temporarily as a tornado approached the field , according to Lynn Lunsford of the Federal Aviation Administration . Rescue crews busy in Dallas , Fort Worth . Comment:
NEW : Truck driver seriously hurt when rig picked up . Female motorist missing in Austin , Texas . Rescue crews busy in Dallas , Fort Worth . Comment: