Data source: The Disaster Center (1950-1997) and NOAA's Storm Prediction Center (1998-2026). Updated on 2026/06/07.
Note: As Danniel McCarthy writes, the increase in the number of tornadoes in 1950-2000 can be attributed to better knowledge of tornadoes and tornado formation and a high interest in tornado observation.
Data through 2026/01/07.