the twister destroyed a 100-year-old farmhouse and destroyed or damaged other homes as well. abc's ryan owens is covering it all in america's tornado alley. >> we have a large multiple-vortex tornado on the ground south of lincoln -- >> reporter: severe weather striking the heartland. several tornados reported in kansas. >> we have a roof that just flew through the air, this is a serious situation. >> reporter: tornado sirens sounding the alarm. >> this entire storm is spinning. >> reporter: oklahoma is also in the crosshairs. >> it got really windy. like sheet rain coming. wild, scary. >> reporter: near oklahoma city, streets littered with downed power lines. this building, what's left of a fire station in the small town of bridge creek, oklahoma. nearby, home after home flattened. this one torn right off its