A confirmed tornado is moving through Davenport, Iowa, prompting urgent warnings for people in the area to take shelter. The tornado was reportedly spotted just northwest of Davenport and is now heading toward Le Claire and Princeton.

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 watch has been issued for parts of central and eastern Nebraska, including the Omaha area, until 10 p.m. Thursday.

Severe weather disrupted events at the Iowa Speedway in Newton on Friday as tornado sirens sounded and fans were told to take shelter. The alert came during the INDYCAR race. The spectators were forced to evacuate the area quickly.

TONIGHT: FIRST WARN - Scattered storms up to 9 pm, with a chance for strong straight-line winds. Turning drier after sunset with storms moving south and east. Temperatures are largely in the 80s with south winds at 5-15 mph.

OMAHA, Neb. (WOWT) - A few isolated thunderstorms will impact parts of southwest Iowa. Some of these storms could produce hail, damaging winds, and maybe a brief spinup. The chance will go until about 6 PM.

Spectators of the INDYCAR race at Iowa Speedway were forced to take shelter during a tornado warning on Friday. A message over the speedway's speakers advises people take shelter.

Severe storms rumbled across central Iowa overnight Thursday, with one system producing a tornado in Guthrie County. WHO 13 viewers sent in photos of the reported damage