Alert archive / Missouri / Flash Flood Warnings / 2026
Flash Flood Warnings in Missouri, May 2026
17 flash flood warnings in May 2026. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in May 2026. Tap one for its archive.
- Flash Flood Warnings
- 17
- Busiest day
- May 18, 20268 flash flood warnings
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 5:26 PM CDT | Flash Flood Warning | EAX | Grundy, Harrison, Mercer | 8 hr |
| May 16, 7:20 PM CDT | Flash Flood Warning | EAX | Grundy, Linn, Sullivan | 6 hr |
| May 16, 9:35 PM CDT | Flash Flood Warning | EAX | Grundy | 6 hr |
| May 16, 10:07 PM CDT | Flash Flood Warning | EAX | Daviess | 5 hr |
| May 18, 11:54 AM CDT | Flash Flood Warning | SGF | Benton, Hickory, St. Clair | 4 hr |
| May 18, 3:05 PM CDT | Flash Flood Warning | LSX | Crawford, Franklin, Gasconade, Warren | 6 hr |
| May 18, 3:19 PM CDT | Flash Flood Warning | SGF | Benton, Camden, Hickory, Miller, Morgan | 5 hr |
| May 18, 4:13 PM CDT | Flash Flood Warning | SGF | Camden, Miller, Pulaski | 4 hr |
| May 18, 5:01 PM CDT | Flash Flood Warning | LSX | Franklin, Gasconade, Warren | 3 hr |
| May 18, 5:06 PM CDT | Flash Flood Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 4 hr |
| May 18, 5:12 PM CDT | Flash Flood Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 3 hr |
| May 18, 6:13 PM CDT | Flash Flood Warning | EAX | Atchison, Holt, Nodaway | 4 hr |
| May 18, 8:09 PM CDT | Flash Flood Warning | EAX | Nodaway, Worth | 5 hr |
| May 19, 7:14 AM CDT | Flash Flood Warning | SGF | Jasper, Newton | 6 hr |
| May 19, 8:40 AM CDT | Flash Flood Warning | SGF | McDonald | 5 hr |
| May 28, 12:21 PM CDT | Flash Flood Warning | SGF | Ozark, Taney | 6 hr |
| May 30, 5:58 PM CDT | Flash Flood Warning | SGF | Dade | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Grundy County3
- Benton County2
- Hickory County2
- Franklin County2
- Gasconade County2
- Warren County2
- Camden County2
- Miller County2
- Saint Louis County2
- City of Saint Louis2
- Nodaway County2
- Harrison County1
- Mercer County1
- Linn County1
- Sullivan County1
- Daviess County1
- St. Clair County1
- Crawford County1
- Morgan County1
- Pulaski County1
- Jefferson County1
- Saint Charles County1
- Atchison County1
- Holt County1
- Worth County1
- Jasper County1
- Newton County1
- McDonald County1
- Ozark County1
- Taney County1
- Dade County1
Nearby
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.