VDE Americas' hail return interval data covers the Continental United States (CONUS) and is available as an organization-level subscription. This set of data includes the return interval (RI) in years for naturally occurring hail (NOH) ranging in diameter from 25 mm (1 in.) to 95 mm (3.7 in.) and the maximum estimated hailstone diameter (dmax) for cumulative return intervals (e.g, 40 years or 100 years). The return interval metric characterizes the estimated amount of time between discrete events. Typical return interval periods for this data set include <25 years, 25–50 years, 50–100 years, 100–250 years, 250–500 years, 500–1,000 years, 1,000–5,000 years, and ≥5,000 years.