matt piper looks at the damage >>eporter: a series of tornados hit the great plains tuesday. this one v oklahoma, knocking out power. at least a dozen tornadoes have been confirmed in four different states. the damage in rural areas in oklahoma shows roofs ripped off, homes torn apart, and downed power lines. the severe weather also triggered flash flood warnings. in davenport, iowa, a levee was breached, forcing evacuation orders and forcing people to seek higher ground. >> we grabbed what little possessions were handy and kind of ran. >> reporter: in clay county, texas, storm chasers spotted several funnel clouds. officials there say a propane tank was even ruptured due to the storm. and in wheaton, missouri, you can see the debris and damage left behind. one business owner we spoke with said he called his family and employees. >> myaur g a fe miles from here, my office secretaries got five miles from hel of my employees got about five miles from here, and then the tornado hit. >> reporter: recovery from the damage from the todays will take days if not weeks. matt piper, cb