More than a Trillion Cicadas Will Emerge in U.S.

More than a trillion cicadas will be coming to the U.S. in an event that has not happened since Thomas Jefferson was U.S. president in 1803.

Two adjacent broods of the red-eyed flying cicadas will emerge from the ground in April, and residents in the Midwest and Southeast should brace themselves for a season of high-pitched buzzing. 

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 13 years, and Brood XIII, which arrives every 17 years, will emerge at the same time. 

The next co-emergence of these broods won’t happen for another 221 years. 

Here’s what to know.  

What are cicadas?

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