Indy is still in BIG TROUBLE, but the storms may hold off until after the race is over. However, very unstable air is present, and of course storms could pop with little warning. Indy is included in sigsvr hatchings with a MDT risk, but it looks like they will likely see some squall line action late in the evening. Main tornado threat is west of them.
Thunderstorms rapidly intensifying in NW suburbs of Chicago. I am hearing lots of cannonball thunder right now. Sorry for going OT, but that is just awesome.
Good Luck chasers, nobody get hurt out there, especially David Drummpnd and Mel Robinson!