>> this is a fox news alert in new york city. a powerful storm system spawning deadly tornados in the north texas town of granbury, 35 miles southwest of fort worth. the twisters, killing altleast 6 people, injuring dozens, some reports show helpeds. 14 people are still missing at this point. the severe weather also demolishing house, cutting out power for homes. rescue crews now going from house to house, searching for victims among the rubble. a tornado also hit the town of millsap, but so far no report of injuries. a tornado watch will remain in effect for more than 30 counties until early thursday morning. so if you are just joining us, once again, a powerful thunderstorm system, spawning deadly tornados in parts of texas, in the northern part of texas. one twister killing at least --