River Flood Warnings in Iowa
3,975 river flood warnings since 1986. 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 river flood warnings reaches back to 2005.
River Flood Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- River Flood Warnings
- 3,975
- Busiest year
- 2010580 river flood warnings
- Average year
- 199over 20 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Louisa County417
- Lee County269
- Clay County258
- Johnson County246
- Polk County243
- Des Moines County235
- Black Hawk County198
- Scott County198
- Muscatine County180
- Washington County174
- Clinton County157
- Clayton County141
- Plymouth County131
- Sioux County129
- Dickinson County114
- Cedar County112
- Mahaska County112
- Lyon County109
- Fremont County108
- Linn County108
- Wapello County108
- Iowa County97
- Keokuk County85
- Butler County84
- Warren County84
- Marion County76
- Jackson County75
- Webster County74
- Henry County73
- Humboldt County72
- Wayne County72
- Dallas County70
- Jones County70
- Madison County69
- Floyd County65
- Buena Vista County61
- Story County60
- Appanoose County57
- Bremer County57
- Lucas County56
39 more counties
- Allamakee County52
- Dubuque County52
- Woodbury County47
- O'Brien County44
- Cherokee County42
- Hamilton County40
- Benton County36
- Boone County34
- Cerro Gordo County34
- Emmet County34
- Monona County34
- Pottawattamie County34
- Worth County34
- Mills County34
- Greene County33
- Davis County33
- Kossuth County32
- Delaware County31
- Montgomery County31
- Van Buren County31
- Winneshiek County31
- Decatur County29
- Buchanan County26
- Marshall County24
- Page County21
- Jasper County19
- Palo Alto County19
- Harrison County18
- Taylor County15
- Tama County12
- Pocahontas County11
- Wright County10
- Mitchell County9
- Cass County4
- Jefferson County4
- Guthrie County4
- Poweshiek County3
- Ida County2
- Monroe County2
The latest river flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 5 days |
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Des Moines | 5 days |
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 4 days |
| Sep 20, 7:42 PM CDT | River Flood Warning | DVN | Louisa | 5 days |
| Sep 20, 7:42 PM CDT | River Flood Warning | DVN | Louisa | 6 days |
| Sep 20, 10:02 AM CDT | River Flood Warning | DVN | Benton, Iowa | 24 hr |
| Sep 20, 9:51 AM CDT | River Flood Warning | DVN | Louisa, Muscatine | 5 days |
| Sep 20, 9:44 AM CDT | River Flood Warning | DVN | Keokuk | 66 hr |
| Sep 20, 5:43 AM CDT | River Flood Warning | DVN | Johnson, Louisa, Washington | 4 days |
| Sep 20, 5:17 AM CDT | River Flood Warning | DVN | Johnson, Washington | 4 days |
| Sep 19, 8:57 PM CDT | River Flood Warning | DVN | Clinton, Scott | 24 days |
| Sep 19, 8:50 PM CDT | River Flood Warning | DVN | Jackson | 48 hr |
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. Rebuilt daily.