Brood XIV

17-year cycle · last emerged 2025

States: GA, IN, KY, MA, MD, NC, NJ, NY, OH, PA, TN, VA, WV

Second-largest brood; the most recent emergence (spring 2025).

Source: USDA Forest Service / UConn. Adults emerge when soil 20 cm down reaches ~18°C (64°F), usually mid-to-late spring.

Next broods to emerge

Emergence years are well-established; the exact week varies with spring soil temperature. How this works.