NEW : Six to 13 tornadoes touched down in north Texas , the NWS says . The storms were part of a larger system that spawned several other severe weather events across parts of central and southern states on Friday night. It reported airlines canceled 400 departures , and more than three dozen incoming flights were diverted to other airports because of the storm . Hundreds of buildings are damaged and hundreds of flights are canceled . `` It was like 'The Wizard of Oz , ' `` says one witness .
NEW : Six to 13 tornadoes touched down in north Texas , the NWS says . The storms were part of a larger system that spawned several other severe weather events across parts of central and southern states on Friday night. Hundreds of buildings are damaged and hundreds of flights are canceled . `` It was like 'The Wizard of Oz , ' `` says one witness .