Well, that happened.
Lollapalooza was shut down and Grant Park was evacuated for more than two hours Saturday as severe storms moved through Chicago.
The gates have reopened, and after a confusing but panic-free evacuation fans are trickling back in. Perry's stage is thumping and full of muddy dancers. Some acts have been canceled, but music is expected to begin shortly.
For now, follow the full report here.
All details posted to Twitter, too @chicagosmusic.