Alert archive / Iowa / River Flood Warnings
River Flood Warnings in Iowa, 2020
110 river flood warnings in 2020. 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 2020. Tap one for its archive.
- River Flood Warnings
- 110
- Busiest month
- March55 river flood warnings
- Busiest day
- June 10, 202017 river flood warnings
Over time
By month
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 |
|---|---|---|---|---|
| Mar 4, 10:51 PM CST | River Flood Warning | FSD | Clay, Dickinson | 11 days |
| Mar 5, 9:43 AM CST | River Flood Warning | FSD | Clay | 49 hr |
| Mar 7, 3:51 AM CST | River Flood Warning | FSD | Plymouth | 31 hr |
| Mar 7, 3:51 AM CST | River Flood Warning | FSD | Dickinson | 32 hr |
| Mar 7, 6:01 PM CST | River Flood Warning | FSD | Clay | 21 days |
| Mar 8, 6:52 AM CDT | River Flood Warning | FSD | Clay | 7 days |
| Mar 8, 7:28 PM CDT | River Flood Warning | DMX | Emmet | 32 hr |
| Mar 9, 3:05 AM CDT | River Flood Warning | FSD | Lyon | 21 days |
| Mar 9, 9:33 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 54 hr |
| Mar 9, 9:33 AM CDT | River Flood Warning | FSD | Plymouth | 4 days |
| Mar 17, 10:58 AM CDT | River Flood Warning | DVN | Des Moines | 42 days |
| Mar 17, 10:58 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 42 days |
| Mar 18, 9:45 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 5 days |
| Mar 18, 9:45 AM CDT | River Flood Warning | FSD | Plymouth | 21 days |
| Mar 18, 9:45 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 21 days |
| Mar 18, 9:45 AM CDT | River Flood Warning | FSD | Clay | 21 days |
| Mar 18, 8:50 PM CDT | River Flood Warning | DVN | Des Moines, Louisa | 38 days |
| Mar 18, 8:50 PM CDT | River Flood Warning | DVN | Muscatine, Scott | 35 days |
| Mar 18, 8:50 PM CDT | River Flood Warning | DVN | Muscatine | 35 days |
| Mar 18, 8:50 PM CDT | River Flood Warning | DVN | Louisa, Muscatine | 36 days |
| Mar 18, 8:50 PM CDT | River Flood Warning | DVN | Louisa | 37 days |
| Mar 19, 9:45 AM CDT | River Flood Warning | DVN | Benton, Iowa | 21 days |
| Mar 19, 9:10 PM CDT | River Flood Warning | OAX | Fremont | 4 days |
| Mar 20, 7:03 AM CDT | River Flood Warning | DVN | Johnson, Washington | 24 hr |
| Mar 20, 7:03 AM CDT | River Flood Warning | DVN | Keokuk | 21 hr |
| Mar 20, 10:02 AM CDT | River Flood Warning | DVN | Clinton, Scott | 21 days |
| Mar 20, 10:45 AM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 8 days |
| Mar 20, 10:49 AM CDT | River Flood Warning | ARX | Clayton | 52 hr |
| Mar 20, 10:51 AM CDT | River Flood Warning | DMX | Black Hawk | 71 hr |
| Mar 20, 11:15 AM CDT | River Flood Warning | DVN | Dubuque, Jackson | 21 days |
| Mar 20, 11:15 AM CDT | River Flood Warning | DVN | Clinton, Scott | 21 days |
| Mar 20, 8:32 PM CDT | River Flood Warning | FSD | Clay | 40 hr |
| Mar 21, 9:54 AM CDT | River Flood Warning | DVN | Keokuk | 51 hr |
| Mar 27, 11:15 AM CDT | River Flood Warning | FSD | Lyon | 21 days |
| Mar 27, 11:15 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 8 days |
| Mar 27, 11:15 AM CDT | River Flood Warning | FSD | Plymouth | 9 days |
| Mar 27, 11:15 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 21 days |
| Mar 27, 11:15 AM CDT | River Flood Warning | FSD | Clay | 21 days |
| Mar 28, 8:43 AM CDT | River Flood Warning | FSD | Lyon | 4 days |
| Mar 28, 8:43 AM CDT | River Flood Warning | FSD | Clay | 4 days |
| Mar 28, 9:55 AM CDT | River Flood Warning | DMX | Davis, Wapello | 12 hr |
| Mar 28, 10:52 AM CDT | River Flood Warning | DVN | Dubuque, Jackson | 22 days |
| Mar 28, 10:52 AM CDT | River Flood Warning | DVN | Clinton, Scott | 24 days |
| Mar 28, 10:52 AM CDT | River Flood Warning | DVN | Lee | 21 days |
| Mar 28, 11:21 PM CDT | River Flood Warning | FSD | Lyon | 21 days |
| Mar 29, 10:02 AM CDT | River Flood Warning | ARX | Allamakee, Clayton | 20 days |
| Mar 29, 10:35 AM CDT | River Flood Warning | DVN | Louisa | 34 hr |
| Mar 29, 1:36 PM CDT | River Flood Warning | FSD | Clay | 21 days |
| Mar 29, 3:21 PM CDT | River Flood Warning | FSD | Lyon, Sioux | 23 hr |
| Mar 29, 3:21 PM CDT | River Flood Warning | FSD | Sioux | 21 days |
| Mar 30, 8:50 AM CDT | River Flood Warning | FSD | Plymouth | 21 days |
| Mar 30, 10:32 AM CDT | River Flood Warning | DVN | Dubuque | 18 days |
| Mar 30, 8:26 PM CDT | River Flood Warning | OAX | Fremont | 5 days |
| Mar 31, 9:57 AM CDT | River Flood Warning | DVN | Clinton | 21 days |
| Mar 31, 9:57 AM CDT | River Flood Warning | DVN | Scott | 21 days |
| Apr 1, 10:09 AM CDT | River Flood Warning | ARX | Clayton | 15 days |
| Apr 2, 8:53 PM CDT | River Flood Warning | DVN | Jackson | 11 days |
| Apr 12, 10:20 AM CDT | River Flood Warning | DVN | Lee | 4 days |
| Apr 17, 8:53 AM CDT | River Flood Warning | DVN | Lee | 70 hr |
| May 17, 6:39 PM CDT | River Flood Warning | FSD | Clay, Dickinson | 13 days |
| May 18, 9:40 AM CDT | River Flood Warning | FSD | Clay | 14 days |
| May 18, 1:57 PM CDT | River Flood Warning | FSD | Clay | 12 days |
| May 26, 10:41 PM CDT | River Flood Warning | FSD | Clay | 42 hr |
| May 27, 8:48 PM CDT | River Flood Warning | OAX | Fremont | 49 hr |
| May 28, 8:27 PM CDT | River Flood Warning | DVN | Benton, Iowa | 21 days |
| May 29, 4:32 AM CDT | River Flood Warning | DMX | Black Hawk | 45 hr |
| May 29, 9:34 AM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 6 days |
| May 30, 8:33 AM CDT | River Flood Warning | DVN | Clinton, Scott | 21 days |
| Jun 2, 10:43 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 15 days |
| Jun 2, 8:45 PM CDT | River Flood Warning | DVN | Des Moines | 15 days |
| Jun 4, 8:56 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 5 days |
| Jun 5, 10:36 AM CDT | River Flood Warning | DVN | Louisa | 4 days |
| Jun 9, 7:51 PM CDT | River Flood Warning | ARX | Winneshiek | 37 hr |
| Jun 9, 7:51 PM CDT | River Flood Warning | ARX | Clayton | 56 hr |
| Jun 9, 7:51 PM CDT | River Flood Warning | ARX | Clayton | 61 hr |
| Jun 9, 8:19 PM CDT | River Flood Warning | DVN | Benton, Iowa | 7 days |
| Jun 9, 8:19 PM CDT | River Flood Warning | DVN | Johnson, Washington | 62 hr |
| Jun 9, 8:41 PM CDT | River Flood Warning | DMX | Black Hawk | 38 hr |
| Jun 9, 8:42 PM CDT | River Flood Warning | DMX | Black Hawk | 35 hr |
| Jun 9, 8:43 PM CDT | River Flood Warning | DMX | Davis, Wapello | 8 hr |
| Jun 9, 8:47 PM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 21 days |
| Jun 9, 8:47 PM CDT | River Flood Warning | DVN | Johnson, Louisa, Washington | 48 hr |
| Jun 9, 9:01 PM CDT | River Flood Warning | DVN | Buchanan, Linn | 3 days |
| Jun 9, 9:01 PM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 7 days |
| Jun 9, 9:35 PM CDT | River Flood Warning | DVN | Des Moines, Louisa | 21 days |
| Jun 10, 12:15 AM CDT | River Flood Warning | DVN | Lee | 22 hr |
| Jun 10, 10:10 AM CDT | River Flood Warning | DVN | Louisa | 21 days |
| Jun 10, 10:10 AM CDT | River Flood Warning | DVN | Louisa | 21 days |
| Jun 10, 10:16 AM CDT | River Flood Warning | DVN | Des Moines, Henry, Lee | 65 hr |
| Jun 11, 10:32 AM CDT | River Flood Warning | FSD | Clay | 12 hr |
| Jun 21, 12:04 PM CDT | River Flood Warning | DMX | Black Hawk | 5 days |
| Jun 22, 8:22 AM CDT | River Flood Warning | DMX | Black Hawk | 5 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Clinton, Scott | 12 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Linn | 6 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Cedar, Johnson, Linn | 7 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Cedar, Johnson | 7 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 21 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Benton, Iowa | 9 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Johnson, Washington | 13 hr |
| Jun 22, 2:30 PM CDT | River Flood Warning | DMX | Tama | 3 days |
| Jun 22, 2:30 PM CDT | River Flood Warning | DMX | Black Hawk | 4 days |
| Jun 22, 2:52 PM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 6 days |
| Jun 22, 2:56 PM CDT | River Flood Warning | DVN | Keokuk | 41 hr |
| Jun 22, 3:13 PM CDT | River Flood Warning | DVN | Benton, Linn | 4 days |
| Jun 22, 3:21 PM CDT | River Flood Warning | DVN | Louisa | 21 days |
| Jun 22, 3:21 PM CDT | River Flood Warning | DVN | Louisa | 11 days |
| Jun 27, 10:29 AM CDT | River Flood Warning | DVN | Des Moines | 5 days |
| Jun 27, 10:29 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 5 days |
| Jun 29, 10:35 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 32 hr |
| Jul 6, 8:59 AM CDT | River Flood Warning | FSD | Lyon | 45 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Louisa County17
- Clay County16
- Des Moines County11
- Plymouth County8
- Lee County8
- Cedar County8
- Muscatine County7
- Scott County7
- Black Hawk County7
- Lyon County6
- Johnson County6
- Clinton County6
- Linn County6
- Dickinson County5
- Sioux County5
- Benton County5
- Clayton County5
- Iowa County4
- Washington County4
- Fremont County3
- Keokuk County3
- Dubuque County3
- Jackson County3
- Davis County2
- Wapello County2
- Jones County2
- Emmet County1
- Allamakee County1
- Winneshiek County1
- Buchanan County1
- Henry County1
- Tama County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.