Tornadoes in Texas and Mississippi kill 4 as severe weather moves east - Tornadoes in Texas and Mississippi Kill Two as Severe Weather System Moves East - Oklahoma: more tornado warnings issued a day after 11 injured in twisters - Severe weather in Oklahoma, risk of more tornadoes in several states - Oklahoma braces for more severe weather after tornadoes leave thousands without power - Oklahoma's tornadoes and storms leave thousands without power - Aerial footage shows damage left by Oklahoma tornadoes - Severe storms and possible tornadoes strike Oklahoma, injuring at least 6 - North Texas tornado survivors shed tears, call the experience "traumatic" - In a north Texas county, dazed residents sift through homes mangled by a tornado