Apr 15, 2023
Several strong to severe thunderstorms moved into eastern Missouri in the afternoon hours of April 15th. These storms were initially producing copious large hail, but rapidly transitioned into tornadic storms. The first tornado was associated with a supercell ahead of a congealing line of convection moving rapidly toward the Mississippi River. A portion of this line of storms rapidly surged eastward, resulting in numerous tornadoes in Jefferson county in Missouri, and Monroe, Madison, St. Clair,
Source: NOAA National Weather Service Storm Events Database (event 1094955). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in St. Louis County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.