2024 Cicada Swarmed. There are two groups of periodical cicadas — those that emerge every 13 years and those that emerge every 17 years. Trillions of cicadas are expected to emerge, already clinging to homes, with their buzzing prompting noise complaints.
Cicadas will hear the call of. One of the most peculiar of north america’s natural wonders — the synchronized mass mating frenzies of big, obsessed insects called periodical cicadas.