Alert archive / Iowa / River Flood Warnings / 2018
River Flood Warnings in Iowa, September 2018
112 river flood warnings in September 2018. 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 in September 2018. Tap one for its archive.
- River Flood Warnings
- 112
- Busiest day
- September 20, 201837 river 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 |
|---|---|---|---|---|
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Clinton, Scott | 17 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 15 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Iowa | 15 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Johnson, Louisa, Washington | 5 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Louisa | 14 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Louisa | 16 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Louisa | 16 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Johnson, Washington | 5 days |
| Sep 1, 10:01 AM CDT | River Flood Warning | DVN | Keokuk | 10 days |
| Sep 1, 9:40 PM CDT | River Flood Warning | DMX | Black Hawk | 10 days |
| Sep 2, 12:40 AM CDT | River Flood Warning | DMX | Jasper, Marion, Polk | 6 hr |
| Sep 2, 9:53 AM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 11 days |
| Sep 2, 10:22 AM CDT | River Flood Warning | DVN | Louisa | 16 days |
| Sep 2, 10:22 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 16 days |
| Sep 2, 10:22 AM CDT | River Flood Warning | DVN | Des Moines | 17 days |
| Sep 2, 10:22 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 17 days |
| Sep 3, 5:23 AM CDT | River Flood Warning | ARX | Clayton | 5 days |
| Sep 3, 9:19 AM CDT | River Flood Warning | DVN | Cedar, Johnson, Linn | 9 days |
| Sep 3, 10:15 AM CDT | River Flood Warning | DVN | Buchanan, Linn | 7 days |
| Sep 3, 5:07 PM CDT | River Flood Warning | DMX | Tama | 7 days |
| Sep 3, 5:07 PM CDT | River Flood Warning | DMX | Black Hawk | 6 days |
| Sep 3, 5:07 PM CDT | River Flood Warning | DMX | Black Hawk | 5 days |
| Sep 3, 9:27 PM CDT | River Flood Warning | ARX | Clayton | 4 days |
| Sep 3, 9:28 PM CDT | River Flood Warning | DVN | Jackson | 70 hr |
| Sep 3, 9:28 PM CDT | River Flood Warning | DVN | Benton, Linn | 7 days |
| Sep 4, 1:03 AM CDT | River Flood Warning | ARX | Winneshiek | 3 days |
| Sep 4, 10:02 AM CDT | River Flood Warning | OAX | Fremont | 7 days |
| Sep 4, 11:21 AM CDT | River Flood Warning | DVN | Muscatine, Scott | 9 days |
| Sep 4, 11:21 AM CDT | River Flood Warning | DVN | Muscatine | 11 days |
| Sep 4, 11:21 AM CDT | River Flood Warning | DVN | Louisa, Muscatine | 12 days |
| Sep 4, 11:21 AM CDT | River Flood Warning | DVN | Lee | 12 days |
| Sep 4, 11:23 AM CDT | River Flood Warning | ARX | Floyd | 58 hr |
| Sep 4, 1:47 PM CDT | River Flood Warning | OAX | Mills | 4 days |
| Sep 4, 2:16 PM CDT | River Flood Warning | DVN | Jackson | 17 hr |
| Sep 4, 10:44 PM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 11 hr |
| Sep 4, 11:49 PM CDT | River Flood Warning | FSD | Plymouth | 8 hr |
| Sep 5, 3:29 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 7 hr |
| Sep 5, 10:15 AM CDT | River Flood Warning | DMX | Marshall | 4 days |
| Sep 5, 10:15 AM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 4 days |
| Sep 5, 3:50 PM CDT | River Flood Warning | DVN | Johnson, Louisa, Washington | 4 days |
| Sep 5, 3:50 PM CDT | River Flood Warning | DVN | Johnson, Washington | 5 days |
| Sep 6, 2:16 AM CDT | River Flood Warning | FSD | Clay | 51 hr |
| Sep 6, 5:56 AM CDT | River Flood Warning | DMX | Dallas, Greene | 72 hr |
| Sep 6, 8:19 AM CDT | River Flood Warning | FSD | Buena Vista, Clay | 5 days |
| Sep 6, 9:02 AM CDT | River Flood Warning | DVN | Des Moines, Henry, Lee | 8 days |
| Sep 6, 1:44 PM CDT | River Flood Warning | DVN | Lee | 49 hr |
| Sep 11, 8:30 AM CDT | River Flood Warning | DVN | Des Moines, Henry, Lee | 65 hr |
| Sep 19, 10:24 AM CDT | River Flood Warning | DMX | Black Hawk | 10 days |
| Sep 19, 10:24 AM CDT | River Flood Warning | DMX | Black Hawk | 7 days |
| Sep 19, 10:24 AM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 5 days |
| Sep 19, 9:48 PM CDT | River Flood Warning | DVN | Iowa | 35 days |
| Sep 19, 9:54 PM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 3 days |
| Sep 19, 9:54 PM CDT | River Flood Warning | DMX | Emmet | 15 days |
| Sep 20, 2:37 AM CDT | River Flood Warning | ARX | Clayton | 5 days |
| Sep 20, 2:37 AM CDT | River Flood Warning | ARX | Clayton | 4 days |
| Sep 20, 4:55 AM CDT | River Flood Warning | DMX | Wright | 6 days |
| Sep 20, 4:55 AM CDT | River Flood Warning | DMX | Humboldt | 9 days |
| Sep 20, 6:32 AM CDT | River Flood Warning | FSD | O'Brien | 41 hr |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Lyon | 51 hr |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 10 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Plymouth | 12 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Clay | 8 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Lyon | 4 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Lyon, Sioux | 4 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Sioux | 28 hr |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | O'Brien | 24 hr |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Sioux | 4 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 12 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Clay | 14 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Buena Vista, Clay | 32 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | O'Brien | 4 days |
| Sep 20, 6:49 AM CDT | River Flood Warning | FSD | Cherokee | 12 days |
| Sep 20, 7:06 AM CDT | River Flood Warning | FSD | Plymouth | 3 days |
| Sep 20, 9:15 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 61 hr |
| Sep 20, 9:15 AM CDT | River Flood Warning | FSD | Plymouth | 4 days |
| Sep 20, 9:15 AM CDT | River Flood Warning | FSD | Clay | 42 hr |
| Sep 20, 9:15 AM CDT | River Flood Warning | FSD | Woodbury | 8 days |
| Sep 20, 9:15 AM CDT | River Flood Warning | FSD | Lyon | 47 hr |
| Sep 20, 9:25 AM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 10 days |
| Sep 20, 9:25 AM CDT | River Flood Warning | DVN | Clinton, Scott | 33 days |
| Sep 20, 10:51 AM CDT | River Flood Warning | ARX | Winneshiek | 36 hr |
| Sep 20, 11:17 AM CDT | River Flood Warning | FSD | Lyon | 6 days |
| Sep 20, 11:23 AM CDT | River Flood Warning | DMX | Webster | 7 days |
| Sep 20, 11:23 AM CDT | River Flood Warning | DMX | Palo Alto, Pocahontas | 5 days |
| Sep 20, 11:23 AM CDT | River Flood Warning | DMX | Humboldt, Kossuth | 8 days |
| Sep 20, 2:38 PM CDT | River Flood Warning | DVN | Delaware, Jones | 50 hr |
| Sep 20, 2:44 PM CDT | River Flood Warning | FSD | Lyon, Sioux | 5 days |
| Sep 20, 9:17 PM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 33 days |
| Sep 20, 9:17 PM CDT | River Flood Warning | DVN | Louisa | 36 days |
| Sep 20, 9:17 PM CDT | River Flood Warning | DVN | Louisa | 38 days |
| Sep 21, 4:14 AM CDT | River Flood Warning | ARX | Floyd | 46 hr |
| Sep 21, 4:16 AM CDT | River Flood Warning | DVN | Buchanan, Linn | 4 days |
| Sep 21, 6:03 AM CDT | River Flood Warning | ARX | Winneshiek | 22 hr |
| Sep 21, 8:38 AM CDT | River Flood Warning | FSD | Dickinson | 4 days |
| Sep 21, 8:38 AM CDT | River Flood Warning | FSD | Plymouth | 11 days |
| Sep 21, 10:06 AM CDT | River Flood Warning | OAX | Harrison | 7 days |
| Sep 21, 10:06 AM CDT | River Flood Warning | OAX | Mills | 13 days |
| Sep 21, 10:06 AM CDT | River Flood Warning | OAX | Fremont | 40 days |
| Sep 21, 10:30 AM CDT | River Flood Warning | DVN | Benton, Linn | 6 days |
| Sep 21, 10:30 AM CDT | River Flood Warning | DVN | Cedar, Johnson, Linn | 8 days |
| Sep 21, 10:30 AM CDT | River Flood Warning | DVN | Louisa | 32 days |
| Sep 21, 10:37 AM CDT | River Flood Warning | DMX | Boone, Hamilton, Webster | 5 days |
| Sep 21, 9:11 PM CDT | River Flood Warning | DMX | Black Hawk | 25 hr |
| Sep 21, 9:58 PM CDT | River Flood Warning | DVN | Des Moines, Louisa | 40 days |
| Sep 21, 9:58 PM CDT | River Flood Warning | DVN | Des Moines | 43 days |
| Sep 21, 9:58 PM CDT | River Flood Warning | DVN | Des Moines, Lee | 43 days |
| Sep 22, 9:24 AM CDT | River Flood Warning | FSD | Plymouth, Woodbury | 30 hr |
| Sep 22, 8:02 PM CDT | River Flood Warning | DMX | Humboldt | 25 hr |
| Sep 22, 9:44 PM CDT | River Flood Warning | FSD | Dickinson | 4 days |
| Sep 23, 5:19 AM CDT | River Flood Warning | DMX | Hamilton, Webster | 34 hr |
| Sep 25, 4:32 PM CDT | River Flood Warning | DMX | Tama | 4 days |
| Sep 28, 11:11 AM CDT | River Flood Warning | DVN | Louisa | 33 days |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Louisa County15
- Black Hawk County8
- Linn County8
- Des Moines County8
- Plymouth County8
- Clay County8
- Cedar County6
- Johnson County6
- Lee County6
- Lyon County6
- Sioux County6
- Muscatine County5
- Washington County4
- Clayton County4
- Floyd County4
- Dickinson County4
- Scott County3
- Jones County3
- Winneshiek County3
- Humboldt County3
- O'Brien County3
- Webster County3
- Clinton County2
- Iowa County2
- Buchanan County2
- Tama County2
- Jackson County2
- Benton County2
- Fremont County2
- Mills County2
- Cerro Gordo County2
- Worth County2
- Bremer County2
- Butler County2
- Buena Vista County2
- Henry County2
- Woodbury County2
- Hamilton County2
- Keokuk County1
- Jasper County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.