Will Cicadas Come Out In 2024. This spring, two broods of cicadas will emerge in the midwest and the.  — periodical cicadas, which only live in midwestern and eastern states, spend either 13 or 17 years underground before coming out as adults in mass, synchronized.

Maps of two cicada broods, reunited after 221 years.  — periodical cicadas, which only live in midwestern and eastern states, spend either 13 or 17 years underground before coming out as adults in mass, synchronized.