Cicadas, specifically Brood XIV, are set to emerge in spring 2025 across the eastern United States, with billions expected in areas like Kentucky and Tennessee. This brood, which appears every 17 years, will be the only group this spring, resulting in fewer cicadas compared to 2024. They will emerge when the soil temperature rises, typically from late April to early June, and will remain above ground for about 4 to 6 weeks, creating loud buzzing sounds as part of their mating rituals before laying eggs in tree branches.