Overview

• The U.S. has reported over 960 tornadoes as of May 22, far exceeding the 15-year average of 660 tornadoes by this point in the year.
• March 2025 saw a record-breaking 299 tornadoes, driven by two major outbreaks and fueled by a weak La Niña pattern and warmer Gulf waters.
• Tornado Alley has shifted eastward, with activity now spanning nearly all areas east of the Rockies, particularly the Mississippi Valley region.
• The tornado season is increasingly year-round, with winter and overnight tornadoes in the Southeastern U.S. posing heightened fatality risks.
• Despite fewer days with EF2+ tornadoes over recent decades, active tornado days now produce more tornadoes, reflecting evolving storm patterns.