At least six people were killed and dozens injured as tornadoes fueled by unusually warm air pummeled the South and Midwest on Friday and early Saturday. Three people died in the northwestern Arkansas hamlet of Cincinnati when a tornado touched down just before sunrise Friday, and three others died when a storm spawned by the same weather system ripped up the Missouri countryside near Rolla. Early Saturday, two people were injured in central Mississippi and several homes were damaged by a storm in Attala County. Tornado watches were in effect for parts of Mississippi, Alabama and Louisiana on Saturday morning as the system continued moving east. At Fort Leonard Wood, a tornado with winds of 136 to 165 mph demolished about a dozen homes and caused lesser damage to many more in a neighborhood that houses officers. Spokesman Jeff S. Maddy said many from the fort were traveling for the holidays. "The good thing here is if you had to have a storm like this, it couldn't happen at better time because we have the holiday season and so many people are visiting family and friends away from Fort Leonard Wood." The region has been bracing for severe weather for much of the week. Gulf moisture riding southerly winds pushed temperatures into the upper 60s and 70s on Thursday - ahead of a cold front expected to drop temperatures into the teens by Saturday morning. "This storm system has been showing significant signs that it could develop," said Chris Buonanno, a meteorologist at the National Weather Service in North Little Rock.