Rare Simultaneous Emergence of Two Cicada Broods Expected in 2024

This natural event, last seen in 1803, will see cicadas from Brood XIII and Brood XIX emerge in various parts of the United States.

For the first time in 221 years, two different broods of cicadas — the 17-year Brood XIII and the 13-year Brood XIX — will emerge simultaneously in parts of the United States.
The last time two broods of cicadas emerged at once was in 1803, during Thomas Jefferson's presidency.
Brood XIII cicadas will emerge in parts of Indiana, Iowa, Wisconsin and possibly Michigan, but are expected to be concentrated in Illinois.
Brood XIX cicadas are set to emerge in 15 states across the country, including Alabama, Arkansas, Georgia, Illinois, Indiana, Kentucky, Louisiana, Missouri, Mississippi, North Carolina, Oklahoma, South Carolina and Virginia.
Cicadas are harmless to humans and pets, they don't sting or carry diseases, and they don't bite. They can, however, damage young trees by laying eggs on the branches.