Heavy rain caused flooding issues in Ames and rotation was observed in clouds around the Iowa Speedway in Newton as the area was under a tornado warning. All watches and warnings have expired for central Iowa, but major flooding continues in some eastern Iowa communities after heavy rain and possible tornadoes.

After an afternoon filled with tornado sirens, lightning strikes, torrential rain and visible cloud rotation near Iowa Speedway, IndyCar canceled Friday afternoon practice.

A tornado warning for southeastern Guthrie County was allowed to expire as planned for 12:15 a.m. Friday. According to the National Weather Service, a severe thunderstorm capable of producing a tornado was located near Casey at 11:45 p.m., moving east at 35 mph.