NEW ORLEANS - Saturday's final acts at the New Orleans Jazz and Heritage Festival have been cancelled.

A strong line of thunderstorms, dumping heavy rain hit the festival grounds about 3:30 p.m. and continued. Festival organizers cancelled the remaining performances at about 4:30 p.m., citing the severe weather.

Few people remained in front of the stages as the rain poured. At the festival's largest stage, Stevie Wonder came out to tell the crowd the news and spontaneously sang Prince's hit, "Purple Rain," as those in the crowd sang along, packed up and began to disperse.