Cicada 2024 Chicago Bulls. What you need to know about the illinois 2024 double brood emergence. For the first time in more than 200 years, two different groups of periodic cicadas will emerge at the same time.

After 17 years underground, the periodical cicadas have emerged in northern illinois, and their telltale chorus of buzzing has begun in some parts of the chicago area. Here is everything you need to know about the natural phenomenon, along with a map.