Flash Flood in Benton County, Missouri
Flash Flood May 18, 2026 · Benton County, Missouri
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
State Highway DD was closed due to flooding at Knobby Creek.
The wider storm
A strong upper level trough moved into the Rockies on May 18, with southwest flow aloft over the Missouri Ozarks. A cluster of thunderstorms pushed southeast into portions of central Missouri, bringing heavy rainfall and flash flooding to St. Clair, Benton, and Camden counties. Additionally, a low level jet axis extending from the Gulf through eastern Kansas strengthened overnight into May 19 while interacting with the upper level trough and a surface front. As a result, a second line of thunderstorms formed across northern Kansas, moving into Missouri overnight before exiting the state in the late afternoon hours. With the multiple rounds of heavy rainfall, storm total rainfall observations ranged between 3-7 inches across portions of southeast Kansas and the Missouri Ozarks, with 8.20 inches of rainfall measured in Hickory County. This led to multiple road closures reported from the flooding.
Began near Knobby (38.1700, -93.1000).
Source: NOAA Storm Events Database, event 1336524. Narratives are written by the National Weather Service forecast office that issued the report.
Tornadoes near your address
See every tornado that passed near a place you know, measured to its path.
We couldn’t get your location. Check that location access is allowed for this site, or type an address.