NEW : An empty trailer weighs 14,000 pounds , while a full one weighs about 46,000 , a Schneider spokesman said . 650 homes were destroyed and 650 damaged , The National Weather Service says . NEW : the Red Cross says About 250 tornado rated an EF-3 . NEW : About 250 departures and 250 arrivals were canceled , a D/FW Airport spokesman says . About 200 tornadoes might have touched down in north Texas .
NEW : 650 homes were destroyed and 650 damaged , The National Weather Service says . NEW : the Red Cross says About 250 tornado rated an EF-3 . NEW : About 250 departures and 250 arrivals were canceled , a D/FW Airport spokesman says . About 200 tornadoes might have touched down in north Texas .