Cicada Brood Emergence Map 2024. The northern illinois brood spends 17 years underground before surfacing and is known as brood xiii, while the great southern brood, or brood xix, lives. The last time this occurred was 1803, the birth.

A rare burst of billions of cicadas will rewire our ecosystems for years to come. Brood 19 cicadas have emerged in parts of the southeast and they’re making a lot of noise.