Cicada Brood Emergence Map 2024. The 2 broods emerging in spring 2024 are brood xiii (brown) in northern illinois and brood. January 26, 2024 at 3:07 p.m.
Experts have said two periodical cicada broods, which haven’t emerged simultaneously in more than 220 years, will rise from the ground in parts of the u.s. A rare burst of billions of cicadas will rewire our ecosystems for years to come.