Authorities have canceled the entire day of events at the Taste of Chicago festival because of heavy rain and flooding on the festival grounds.
The city's Office of Emergency Management announced the closure around noon Saturday as forecasters warned of more storms for the afternoon.
The annual food and cultural festival is one of the city's premier summer events, drawing thousands of visitors to Grant Park. It began Wednesday and runs through Sunday.
Saturday's events were to have included concerts by Wilco frontman Jeff Tweedy and roots-rock songwriter Lucinda Williams.
The Taste says on its Facebook page that all tickets purchased online would be refunded automatically.
Organizers say the festival will reopen as scheduled on Sunday at 10 a.m. for its final day.