Tornado warnings, thunderstorms cancel IndyCar practices Friday at Iowa Speedway. What we know
Indy NXT managed to run most of its lone practice of the weekend before yellow flags came out at 2:01 p.m. local time (CT) for rain drops that began to fall, giving the junior series just under 30 minutes of running before the storms arrived.
IndyCar was scheduled to have its first of two weekend practice sessions starting at 2:35 p.m., one meant for drivers to solely run the high-line around the track in an effort to lay down rubber and help the quality of the racing this weekend, but at 2:12 p.m., lightning strikes were spotted within eight miles of Iowa Speedway, putting on-track action on an indefinite hold as patrons were asked to exit the grandstands and seek shelter.
Various members of the IndyCar and Indy NXT paddocks hunkered down inside the Newton Club suites and the infield media center, the two largest permanent structures around the track. A tornado warning was announced by the National Weather Service at 2:28 p.m., followed shortly by several rounds of tornado sirens.
A wall cloud and potential cloud rotation could be seen just north of the track, with additional rotation spotted to the south. A tornado warning for the area surrounding the track expired at 3:15 p.m., though a tornado watch will continue until 8 p.m., according to the National Weather Service.
IndyCar was scheduled to hold its high-line practice from 2:35 to 3:20 p.m., with its lone traditional practice just afterwards from 3:30 to 5 p.m. Qualifying for Indy NXT's race Saturday was slated for 5:35 to 6:20 p.m. Friday early evening.
Insider: IndyCar paddock 'kinda sad' to be back at Iowa Speedway. Series tries to improve races since repave
Just before 4 p.m. as rain continued to fall at the track, IndyCar announced that on-track activity for the rest of the day had been canceled and would resume Saturday.
An updated schedule for the weekend was not yet announced. The first NTT IndyCar race was scheduled for 5 p.m. (ET) Saturday, following the 1:30 p.m. (ET) NXT race.

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