Cicada 2024 Timeline Google. The double cicada brood is certainly a notable event. Billions of bugs are emerging from the soil across a large swath of the united states in a natural phenomenon last witnessed in 1803.

This spring, two broods of cicadas will emerge in the midwest and the southeast, in their first dual appearance since 1803. After 2024, brood xiii and brood xix cicadas won’t sync up their emergences again for another 221 years.