( CNN ) -- At least two tornadoes struck Wednesday near Flagstaff , Arizona , injuring seven people , derailing a train and damaging more than 100 homes , authorities said . One tornado caused `` about a mile of destruction , '' said Sheriff Bill Pribil of Coconino County . It damaged at least 30 mobile homes , blew the windows out of about 100 homes and caused a train derailment , he said . At least seven people were injured , the National Weather Service 's Flagstaff office said . None of the injuries in Coconino County were believed to be serious , Pribil said . Both tornadoes touched down in the town of Bellemont , the National Weather Service reported . See video footage of the damage in Bellemont . Lena Kent , spokeswoman for Burlington Northern Santa Fe Railway , said 28 train cars were derailed and that the track itself suffered minor damages . `` It was stopped ( in Bellemont ) because of the tornado warning , but unfortunately , the tornado came through and actually hit the train , derailing 28 cars , '' she said . No one was injured in the derailment , she said . The company hoped to get the rail lines reopened by midnight . Radar continued to show several thunderstorms in central and north-central Arizona capable of producing tornadoes with little or no advance notice , CNN Meteorologist Sean Morris said . A tornado watch continues for central and north-central Arizona until 5 p.m. ( 8 p.m . ET ) .
NEW : Twenty-eight cars from a train derailed . Tornadoes touched down in Bellemont , which is near Flagstaff . The town was evacuated and the fire department said it had to evacuate about 100 people because of flooding.