May 20, 2025
Multiple rounds of thunderstorms impacted Middle Tennessee on May 20, 2025. The first round of thunderstorms was a decaying mesoscale convective system (MCS) that produced damaging winds which downed a few trees. The next round was discrete supercells which produced large hail, damaging winds, and tornadoes. The largest hail reported during this event was in Williamson County where hailstones of two to three inches fell. Five tornadoes were confirmed during this event with the strongest being an
Source: NOAA National Weather Service Storm Events Database (event 1247411). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Williamson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.