Year Of The Locust 2024. Cicada broods often emerge together, the university of connecticut says, but 2024 will mark the first time in more than 200 years that brood xix, which arrives every. For the first time in 221 years, two broods of.

There are two types of periodical cicadas — ones that come out every 13 years and ones that come out every 17 years. For the first time in 221 years, two broods of.