Alert archive / Iowa / River Flood Warnings
River Flood Warnings in Iowa, 2018
436 river flood warnings in 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 2018. Tap one for its archive.
- River Flood Warnings
- 436
- Busiest month
- September112 river flood warnings
- Busiest day
- September 20, 201837 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 |
|---|---|---|---|---|
| Jan 22, 1:45 PM CST | River Flood Warning | ARX | Winneshiek | 37 hr |
| Jan 22, 1:45 PM CST | River Flood Warning | ARX | Clayton | 71 hr |
| Jan 22, 8:14 PM CST | River Flood Warning | DVN | Iowa | 55 hr |
| Feb 20, 7:39 AM CST | River Flood Warning | DVN | Johnson, Washington | 62 hr |
| Feb 20, 9:30 AM CST | River Flood Warning | DVN | Jackson | 58 hr |
| Feb 20, 10:14 AM CST | River Flood Warning | DVN | Clinton, Scott | 5 days |
| Feb 20, 3:19 PM CST | River Flood Warning | DVN | Iowa | 4 days |
| Feb 20, 3:19 PM CST | River Flood Warning | DVN | Johnson, Louisa, Washington | 58 hr |
| Feb 20, 3:19 PM CST | River Flood Warning | DVN | Louisa | 4 days |
| Feb 20, 10:58 PM CST | River Flood Warning | DVN | Keokuk | 42 hr |
| Feb 22, 12:09 AM CST | River Flood Warning | DVN | Louisa | 43 hr |
| Feb 25, 5:16 AM CST | River Flood Warning | DVN | Clinton, Scott | 71 hr |
| Feb 28, 2:49 PM CST | River Flood Warning | DMX | Black Hawk | 46 hr |
| Mar 4, 11:09 AM CST | River Flood Warning | DMX | Webster | 33 hr |
| Mar 5, 4:56 AM CST | River Flood Warning | FSD | Clay, Dickinson | 34 hr |
| Mar 5, 1:15 PM CST | River Flood Warning | FSD | Clay | 4 days |
| Mar 5, 7:45 PM CST | River Flood Warning | FSD | Lyon | 36 hr |
| Mar 6, 4:07 PM CST | River Flood Warning | FSD | Plymouth, Sioux | 61 hr |
| Mar 6, 6:10 PM CST | River Flood Warning | FSD | Clay | 30 hr |
| Mar 8, 8:47 AM CST | River Flood Warning | FSD | Plymouth | 45 hr |
| Mar 10, 3:29 AM CST | River Flood Warning | FSD | Clay, Dickinson | 24 hr |
| Mar 15, 8:38 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 56 hr |
| Mar 15, 8:38 AM CDT | River Flood Warning | FSD | Clay | 60 hr |
| Mar 15, 7:50 PM CDT | River Flood Warning | FSD | Clay | 39 hr |
| Mar 17, 9:58 PM CDT | River Flood Warning | FSD | Clay, Dickinson | 8 days |
| Mar 19, 8:27 PM CDT | River Flood Warning | FSD | Buena Vista, Clay | 3 days |
| Mar 21, 8:55 AM CDT | River Flood Warning | FSD | Clay | 14 days |
| Mar 23, 9:37 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 13 days |
| Mar 25, 9:44 AM CDT | River Flood Warning | FSD | Plymouth | 4 days |
| Mar 27, 10:48 PM CDT | River Flood Warning | DMX | Emmet | 4 days |
| Mar 28, 9:04 AM CDT | River Flood Warning | FSD | Buena Vista, Clay | 7 days |
| Mar 29, 5:46 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 5 days |
| Mar 29, 8:26 AM CDT | River Flood Warning | FSD | Plymouth | 6 days |
| Mar 29, 8:26 AM CDT | River Flood Warning | FSD | Lyon | 41 hr |
| Mar 29, 8:26 AM CDT | River Flood Warning | FSD | Clay | 47 hr |
| Apr 3, 4:48 PM CDT | River Flood Warning | DMX | Emmet | 6 days |
| Apr 12, 9:58 AM CDT | River Flood Warning | DMX | Emmet | 38 days |
| Apr 13, 9:41 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 59 hr |
| Apr 13, 9:41 AM CDT | River Flood Warning | FSD | Plymouth | 3 days |
| Apr 13, 9:41 AM CDT | River Flood Warning | FSD | Lyon | 3 days |
| Apr 13, 9:41 AM CDT | River Flood Warning | FSD | Clay | 4 days |
| Apr 13, 9:41 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 63 hr |
| Apr 13, 9:41 AM CDT | River Flood Warning | FSD | Clay | 25 days |
| Apr 13, 9:41 AM CDT | River Flood Warning | FSD | Buena Vista, Clay | 43 days |
| Apr 14, 6:52 AM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 11 hr |
| Apr 14, 7:30 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 5 days |
| Apr 14, 10:42 AM CDT | River Flood Warning | DMX | Black Hawk | 12 days |
| Apr 15, 4:36 AM CDT | River Flood Warning | ARX | Floyd | 24 hr |
| Apr 17, 9:50 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 18 days |
| Apr 17, 9:50 AM CDT | River Flood Warning | FSD | Plymouth | 19 days |
| Apr 18, 10:02 AM CDT | River Flood Warning | FSD | Lyon | 7 days |
| Apr 18, 10:02 AM CDT | River Flood Warning | FSD | Clay | 7 days |
| Apr 18, 10:02 AM CDT | River Flood Warning | FSD | Cherokee | 3 days |
| Apr 20, 10:54 AM CDT | River Flood Warning | DMX | Humboldt | 19 days |
| Apr 21, 12:40 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 17 days |
| Apr 23, 10:41 AM CDT | River Flood Warning | FSD | Lyon, Sioux | 9 days |
| Apr 23, 8:30 PM CDT | River Flood Warning | DMX | Palo Alto, Pocahontas | 11 days |
| Apr 24, 9:02 AM CDT | River Flood Warning | FSD | Lyon | 6 days |
| Apr 24, 9:02 AM CDT | River Flood Warning | FSD | Cherokee | 6 days |
| Apr 25, 8:18 AM CDT | River Flood Warning | FSD | Dickinson | 32 hr |
| Apr 25, 1:50 PM CDT | River Flood Warning | FSD | Lyon | 11 days |
| Apr 27, 11:32 AM CDT | River Flood Warning | ARX | Allamakee, Clayton | 17 days |
| Apr 28, 10:59 AM CDT | River Flood Warning | DVN | Dubuque, Jackson | 18 days |
| Apr 29, 10:26 AM CDT | River Flood Warning | ARX | Clayton | 14 days |
| Apr 29, 1:49 PM CDT | River Flood Warning | DVN | Clinton, Scott | 19 days |
| Apr 29, 1:49 PM CDT | River Flood Warning | DVN | Muscatine, Scott | 20 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Dubuque | 12 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Clinton | 15 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Scott | 15 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Muscatine | 18 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Louisa, Muscatine | 19 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Louisa | 21 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Des Moines, Louisa | 21 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Des Moines | 23 days |
| May 1, 10:01 PM CDT | River Flood Warning | DVN | Des Moines, Lee | 23 days |
| May 2, 1:00 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 18 days |
| May 2, 11:14 PM CDT | River Flood Warning | DMX | Taylor | 49 min |
| May 3, 10:39 AM CDT | River Flood Warning | DVN | Clinton, Scott | 24 hr |
| May 3, 9:26 PM CDT | River Flood Warning | DMX | Black Hawk | 6 days |
| May 3, 9:30 PM CDT | River Flood Warning | DMX | Webster | 6 days |
| May 3, 10:08 PM CDT | River Flood Warning | ARX | Winneshiek | 46 hr |
| May 3, 10:08 PM CDT | River Flood Warning | ARX | Clayton | 4 days |
| May 3, 10:08 PM CDT | River Flood Warning | ARX | Clayton | 4 days |
| May 3, 10:19 PM CDT | River Flood Warning | DVN | Jackson | 8 days |
| May 4, 2:14 AM CDT | River Flood Warning | ARX | Allamakee | 52 hr |
| May 4, 6:44 AM CDT | River Flood Warning | ARX | Floyd | 45 hr |
| May 4, 10:29 AM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 70 hr |
| May 4, 10:29 AM CDT | River Flood Warning | DMX | Black Hawk | 72 hr |
| May 4, 10:29 AM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 66 hr |
| May 6, 4:55 AM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 8 days |
| May 7, 11:25 AM CDT | River Flood Warning | DVN | Lee | 11 days |
| May 9, 4:05 AM CDT | River Flood Warning | DVN | Louisa | 3 days |
| May 9, 4:05 AM CDT | River Flood Warning | DVN | Louisa | 5 days |
| May 9, 5:28 AM CDT | River Flood Warning | FSD | Clay | 15 days |
| May 10, 10:08 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 5 days |
| May 10, 10:08 AM CDT | River Flood Warning | FSD | Plymouth | 7 days |
| May 10, 10:08 AM CDT | River Flood Warning | FSD | Lyon | 4 days |
| May 10, 10:31 AM CDT | River Flood Warning | DVN | Clinton, Scott | 5 days |
| May 11, 9:48 AM CDT | River Flood Warning | FSD | Clay | 4 days |
| May 11, 10:05 AM CDT | River Flood Warning | DMX | Humboldt | 6 days |
| May 12, 10:44 AM CDT | River Flood Warning | DMX | Palo Alto, Pocahontas | 71 hr |
| May 13, 7:39 PM CDT | River Flood Warning | FSD | Plymouth | 4 days |
| May 13, 8:58 PM CDT | River Flood Warning | DMX | Black Hawk | 24 hr |
| May 14, 9:05 AM CDT | River Flood Warning | FSD | Cherokee | 5 days |
| May 15, 10:14 PM CDT | River Flood Warning | DVN | Louisa | 22 hr |
| May 23, 10:00 AM CDT | River Flood Warning | DMX | Emmet | 11 hr |
| May 24, 9:03 AM CDT | River Flood Warning | DMX | Emmet | 67 hr |
| Jun 8, 2:02 PM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 4 hr |
| Jun 8, 9:44 PM CDT | River Flood Warning | ARX | Floyd | 23 hr |
| Jun 9, 8:57 PM CDT | River Flood Warning | ARX | Winneshiek | 49 hr |
| Jun 9, 8:57 PM CDT | River Flood Warning | ARX | Clayton | 3 days |
| Jun 9, 8:57 PM CDT | River Flood Warning | ARX | Clayton | 3 days |
| Jun 9, 9:00 PM CDT | River Flood Warning | ARX | Floyd | 3 days |
| Jun 9, 9:01 PM CDT | River Flood Warning | ARX | Allamakee | 3 days |
| Jun 9, 9:17 PM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 12 hr |
| Jun 9, 9:23 PM CDT | River Flood Warning | DMX | Black Hawk | 6 days |
| Jun 9, 9:29 PM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 58 hr |
| Jun 10, 12:25 AM CDT | River Flood Warning | DVN | Delaware, Jones | 59 hr |
| Jun 10, 12:45 AM CDT | River Flood Warning | ARX | Winneshiek | 18 hr |
| Jun 10, 10:22 AM CDT | River Flood Warning | DMX | Black Hawk | 3 days |
| Jun 10, 1:46 PM CDT | River Flood Warning | ARX | Winneshiek | 29 hr |
| Jun 11, 9:04 AM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 7 days |
| Jun 11, 9:21 PM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 8 days |
| Jun 12, 9:49 AM CDT | River Flood Warning | DVN | Clinton, Scott | 19 days |
| Jun 12, 11:17 AM CDT | River Flood Warning | DVN | Cedar, Johnson, Linn | 4 days |
| Jun 14, 10:08 AM CDT | River Flood Warning | FSD | Buena Vista, Clay | 38 days |
| Jun 14, 12:14 PM CDT | River Flood Warning | DMX | Story | 29 hr |
| Jun 14, 2:38 PM CDT | River Flood Warning | DMX | Webster | 7 hr |
| Jun 14, 7:51 PM CDT | River Flood Warning | DMX | Polk, Story | 35 hr |
| Jun 15, 10:14 AM CDT | River Flood Warning | DMX | Webster | 31 hr |
| Jun 16, 10:20 AM CDT | River Flood Warning | DVN | Louisa | 5 days |
| Jun 16, 10:20 AM CDT | River Flood Warning | DVN | Louisa | 5 days |
| Jun 16, 7:59 PM CDT | River Flood Warning | FSD | Sioux | 30 hr |
| Jun 18, 8:30 PM CDT | River Flood Warning | DMX | Dallas, Greene | 8 days |
| Jun 19, 8:39 PM CDT | River Flood Warning | DMX | Polk | 9 days |
| Jun 19, 8:39 PM CDT | River Flood Warning | DMX | Polk | 8 days |
| Jun 20, 12:58 AM CDT | River Flood Warning | OAX | Fremont | 37 hr |
| Jun 20, 10:16 AM CDT | River Flood Warning | OAX | Mills | 24 hr |
| Jun 20, 10:38 AM CDT | River Flood Warning | DMX | Webster | 19 days |
| Jun 20, 10:38 AM CDT | River Flood Warning | DMX | Boone, Hamilton, Webster | 3 days |
| Jun 20, 5:06 PM CDT | River Flood Warning | DMX | Emmet | 38 days |
| Jun 20, 5:20 PM CDT | River Flood Warning | DMX | Polk, Story | 3 hr |
| Jun 20, 9:06 PM CDT | River Flood Warning | DMX | Palo Alto, Pocahontas | 29 days |
| Jun 20, 9:07 PM CDT | River Flood Warning | DMX | Humboldt | 32 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Clay | 18 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Clay | 32 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Cherokee | 22 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Sioux | 8 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Plymouth, Sioux | 20 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Plymouth | 21 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Lyon | 63 hr |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Lyon | 9 days |
| Jun 20, 9:10 PM CDT | River Flood Warning | FSD | Lyon, Sioux | 8 days |
| Jun 20, 9:58 PM CDT | River Flood Warning | OAX | Harrison | 12 hr |
| Jun 20, 11:06 PM CDT | River Flood Warning | FSD | Clay, Dickinson | 30 days |
| Jun 21, 4:01 AM CDT | River Flood Warning | FSD | Lyon | 3 days |
| Jun 21, 4:01 AM CDT | River Flood Warning | FSD | Lyon, Sioux | 4 days |
| Jun 21, 4:01 AM CDT | River Flood Warning | FSD | Plymouth | 71 hr |
| Jun 21, 4:57 AM CDT | River Flood Warning | OAX | Pottawattamie | 2 min |
| Jun 21, 10:10 AM CDT | River Flood Warning | DMX | Humboldt, Kossuth | 10 days |
| Jun 21, 11:16 AM CDT | River Flood Warning | DVN | Dubuque, Jackson | 11 days |
| Jun 21, 11:16 AM CDT | River Flood Warning | DVN | Muscatine, Scott | 15 days |
| Jun 21, 11:16 AM CDT | River Flood Warning | DVN | Muscatine | 15 days |
| Jun 21, 11:16 AM CDT | River Flood Warning | DVN | Louisa, Muscatine | 16 days |
| Jun 21, 11:16 AM CDT | River Flood Warning | DVN | Louisa | 18 days |
| Jun 21, 11:16 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 19 days |
| Jun 21, 11:16 AM CDT | River Flood Warning | DVN | Des Moines | 21 days |
| Jun 21, 11:16 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 21 days |
| Jun 21, 3:35 PM CDT | River Flood Warning | FSD | Dickinson | 13 days |
| Jun 21, 4:52 PM CDT | River Flood Warning | FSD | Plymouth | 4 days |
| Jun 21, 8:09 PM CDT | River Flood Warning | DVN | Iowa | 24 hr |
| Jun 21, 8:57 PM CDT | River Flood Warning | DMX | Black Hawk | 6 days |
| Jun 21, 9:34 PM CDT | River Flood Warning | FSD | Plymouth | 53 hr |
| Jun 21, 11:16 PM CDT | River Flood Warning | FSD | Plymouth | 20 days |
| Jun 21, 11:16 PM CDT | River Flood Warning | FSD | Woodbury | 6 days |
| Jun 22, 12:40 AM CDT | River Flood Warning | FSD | Dickinson | 18 days |
| Jun 22, 8:10 AM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 10 days |
| Jun 22, 10:53 AM CDT | River Flood Warning | OAX | Mills | 20 days |
| Jun 22, 10:53 AM CDT | River Flood Warning | OAX | Fremont | 31 days |
| Jun 22, 10:59 AM CDT | River Flood Warning | DVN | Clinton, Scott | 12 days |
| Jun 22, 2:39 PM CDT | River Flood Warning | FSD | Woodbury | 15 days |
| Jun 23, 9:16 PM CDT | River Flood Warning | ARX | Allamakee, Clayton | 8 days |
| Jun 25, 5:16 AM CDT | River Flood Warning | FSD | Plymouth | 24 hr |
| Jun 25, 4:48 PM CDT | River Flood Warning | FSD | O'Brien | 38 hr |
| Jun 25, 4:48 PM CDT | River Flood Warning | FSD | Plymouth | 3 days |
| Jun 25, 4:48 PM CDT | River Flood Warning | FSD | Plymouth | 65 hr |
| Jun 26, 5:21 AM CDT | River Flood Warning | FSD | Dickinson | 6 hr |
| Jun 26, 5:21 AM CDT | River Flood Warning | FSD | Lyon, Sioux | 4 days |
| Jun 26, 5:21 AM CDT | River Flood Warning | FSD | Woodbury | 12 hr |
| Jun 26, 10:29 AM CDT | River Flood Warning | OAX | Harrison | 3 days |
| Jun 26, 10:29 AM CDT | River Flood Warning | OAX | Pottawattamie | 3 days |
| Jun 26, 11:09 AM CDT | River Flood Warning | DVN | Dubuque | 6 days |
| Jun 26, 3:18 PM CDT | River Flood Warning | FSD | Lyon | 66 hr |
| Jun 26, 9:26 PM CDT | River Flood Warning | ARX | Clayton | 61 hr |
| Jun 27, 10:39 AM CDT | River Flood Warning | DVN | Clinton | 7 days |
| Jun 27, 10:39 AM CDT | River Flood Warning | DVN | Scott | 8 days |
| Jun 29, 10:21 AM CDT | River Flood Warning | DVN | Louisa | 4 days |
| Jun 30, 9:12 AM CDT | River Flood Warning | FSD | Sioux | 3 days |
| Jun 30, 8:50 PM CDT | River Flood Warning | DMX | Polk | 36 hr |
| Jun 30, 9:12 PM CDT | River Flood Warning | DMX | Polk | 15 hr |
| Jun 30, 9:23 PM CDT | River Flood Warning | DMX | Dallas, Polk | 16 hr |
| Jun 30, 9:37 PM CDT | River Flood Warning | DMX | Black Hawk | 7 days |
| Jun 30, 9:37 PM CDT | River Flood Warning | DMX | Polk | 9 days |
| Jun 30, 11:04 PM CDT | River Flood Warning | DMX | Polk | 32 hr |
| Jun 30, 11:05 PM CDT | River Flood Warning | DMX | Polk | 38 hr |
| Jun 30, 11:05 PM CDT | River Flood Warning | DMX | Polk | 11 hr |
| Jul 1, 2:34 AM CDT | River Flood Warning | DMX | Boone, Hamilton, Webster | 41 hr |
| Jul 1, 4:30 AM CDT | River Flood Warning | DMX | Wright | 4 days |
| Jul 1, 4:30 AM CDT | River Flood Warning | DMX | Black Hawk | 70 hr |
| Jul 1, 4:30 AM CDT | River Flood Warning | DMX | Polk | 47 hr |
| Jul 1, 4:30 AM CDT | River Flood Warning | DMX | Dallas, Greene | 5 days |
| Jul 1, 5:51 AM CDT | River Flood Warning | DMX | Jasper, Marion, Polk | 40 hr |
| Jul 1, 6:30 AM CDT | River Flood Warning | DVN | Iowa | 4 days |
| Jul 3, 10:11 AM CDT | River Flood Warning | FSD | Lyon | 46 hr |
| Jul 3, 10:11 AM CDT | River Flood Warning | FSD | Lyon | 53 hr |
| Jul 3, 10:11 AM CDT | River Flood Warning | FSD | Lyon | 4 days |
| Jul 3, 11:11 AM CDT | River Flood Warning | FSD | Lyon, Sioux | 4 days |
| Jul 4, 9:37 AM CDT | River Flood Warning | FSD | Lyon, Sioux | 24 hr |
| Jul 4, 9:41 PM CDT | River Flood Warning | FSD | Dickinson | 48 hr |
| Jul 5, 7:51 AM CDT | River Flood Warning | FSD | Dickinson | 26 hr |
| Jul 5, 7:51 AM CDT | River Flood Warning | FSD | Dickinson | 4 days |
| Jul 13, 9:50 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 5 days |
| Jul 13, 9:50 AM CDT | River Flood Warning | FSD | Plymouth | 5 days |
| Jul 15, 12:39 AM CDT | River Flood Warning | FSD | Plymouth | 70 hr |
| Jul 17, 8:45 AM CDT | River Flood Warning | FSD | Cherokee | 23 hr |
| Jul 25, 8:28 PM CDT | River Flood Warning | FSD | Lyon | 12 hr |
| Aug 19, 11:57 PM CDT | River Flood Warning | OAX | Fremont | 4 days |
| Aug 20, 10:28 AM CDT | River Flood Warning | OAX | Mills | 3 days |
| Aug 20, 5:23 PM CDT | River Flood Warning | OAX | Fremont | 28 hr |
| Aug 28, 9:47 PM CDT | River Flood Warning | ARX | Winneshiek | 34 hr |
| 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 |
| Oct 1, 10:05 AM CDT | River Flood Warning | DMX | Black Hawk | 4 days |
| Oct 1, 12:58 PM CDT | River Flood Warning | ARX | Clayton | 38 hr |
| Oct 1, 3:23 PM CDT | River Flood Warning | DVN | Delaware, Jones | 63 hr |
| Oct 1, 6:11 PM CDT | River Flood Warning | ARX | Clayton | 43 hr |
| Oct 1, 9:41 PM CDT | River Flood Warning | DVN | Buchanan, Linn | 62 hr |
| Oct 1, 9:41 PM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 15 days |
| Oct 1, 10:00 PM CDT | River Flood Warning | DMX | Black Hawk | 4 days |
| Oct 1, 10:23 PM CDT | River Flood Warning | DVN | Muscatine, Scott | 26 days |
| Oct 1, 10:23 PM CDT | River Flood Warning | DVN | Louisa, Muscatine | 28 days |
| Oct 2, 10:12 AM CDT | River Flood Warning | DVN | Jackson | 3 days |
| Oct 2, 2:21 PM CDT | River Flood Warning | DVN | Cedar, Johnson, Linn | 4 days |
| Oct 3, 11:07 AM CDT | River Flood Warning | DVN | Clinton, Scott | 3 days |
| Oct 3, 11:07 AM CDT | River Flood Warning | DVN | Muscatine | 24 days |
| Oct 3, 3:06 PM CDT | River Flood Warning | DMX | Polk | 42 hr |
| Oct 3, 3:19 PM CDT | River Flood Warning | DMX | Tama | 66 hr |
| Oct 4, 9:29 AM CDT | River Flood Warning | DVN | Johnson, Louisa, Washington | 12 days |
| Oct 4, 11:14 AM CDT | River Flood Warning | DVN | Lee | 23 days |
| Oct 4, 8:29 PM CDT | River Flood Warning | DVN | Keokuk | 11 days |
| Oct 5, 9:46 AM CDT | River Flood Warning | DVN | Johnson, Washington | 8 days |
| Oct 6, 3:16 AM CDT | River Flood Warning | DVN | Johnson, Washington | 33 hr |
| Oct 7, 11:20 AM CDT | River Flood Warning | OAX | Mills | 58 hr |
| Oct 7, 8:47 PM CDT | River Flood Warning | DVN | Des Moines, Henry, Lee | 10 days |
| Oct 8, 9:16 AM CDT | River Flood Warning | DVN | Benton, Linn | 6 days |
| Oct 8, 9:16 AM CDT | River Flood Warning | DVN | Cedar, Johnson, Linn | 9 days |
| Oct 8, 9:16 AM CDT | River Flood Warning | DVN | Johnson, Washington | 49 hr |
| Oct 8, 9:59 AM CDT | River Flood Warning | ARX | Clayton | 5 days |
| Oct 8, 10:58 AM CDT | River Flood Warning | DVN | Lee | 6 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Tama | 8 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Black Hawk | 9 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Black Hawk | 6 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Webster | 4 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Davis, Wapello | 91 min |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Humboldt | 5 days |
| Oct 8, 11:49 AM CDT | River Flood Warning | DVN | Clinton | 5 days |
| Oct 8, 11:49 AM CDT | River Flood Warning | DVN | Clinton, Scott | 17 days |
| Oct 8, 11:49 AM CDT | River Flood Warning | DVN | Scott | 6 days |
| Oct 8, 3:36 PM CDT | River Flood Warning | DVN | Jackson | 5 days |
| Oct 8, 10:26 PM CDT | River Flood Warning | DMX | Polk | 7 days |
| Oct 8, 10:26 PM CDT | River Flood Warning | DMX | Polk | 7 days |
| Oct 9, 12:58 AM CDT | River Flood Warning | DMX | Decatur | 4 days |
| Oct 9, 2:49 AM CDT | River Flood Warning | DMX | Polk, Story | 3 days |
| Oct 9, 6:24 AM CDT | River Flood Warning | ARX | Clayton | 4 days |
| Oct 9, 6:39 AM CDT | River Flood Warning | DMX | Marshall | 7 days |
| Oct 9, 6:39 AM CDT | River Flood Warning | DMX | Black Hawk | 6 days |
| Oct 9, 6:39 AM CDT | River Flood Warning | DMX | Dallas, Greene | 5 days |
| Oct 9, 9:24 AM CDT | River Flood Warning | OAX | Montgomery | 18 hr |
| Oct 9, 9:24 AM CDT | River Flood Warning | OAX | Fremont | 5 days |
| Oct 9, 9:24 AM CDT | River Flood Warning | OAX | Page | 38 hr |
| Oct 9, 10:20 AM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 35 hr |
| Oct 9, 10:20 AM CDT | River Flood Warning | DMX | Lucas, Wayne | 64 hr |
| Oct 9, 11:23 AM CDT | River Flood Warning | DVN | Buchanan, Linn | 5 days |
| Oct 9, 11:26 AM CDT | River Flood Warning | DVN | Delaware, Jones | 3 days |
| Oct 9, 11:33 AM CDT | River Flood Warning | DMX | Dallas, Polk | 6 days |
| Oct 9, 12:45 PM CDT | River Flood Warning | DVN | Dubuque, Jackson | 6 days |
| Oct 9, 1:31 PM CDT | River Flood Warning | DVN | Dubuque | 16 days |
| Oct 9, 3:22 PM CDT | River Flood Warning | DMX | Story | 7 hr |
| Oct 9, 3:22 PM CDT | River Flood Warning | DMX | Story | 20 hr |
| Oct 9, 9:36 PM CDT | River Flood Warning | ARX | Winneshiek | 44 hr |
| Oct 9, 9:36 PM CDT | River Flood Warning | ARX | Allamakee | 51 hr |
| Oct 10, 2:13 AM CDT | River Flood Warning | FSD | O'Brien | 38 hr |
| Oct 10, 3:37 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 7 days |
| Oct 10, 6:31 AM CDT | River Flood Warning | FSD | Clay | 10 days |
| Oct 10, 9:46 AM CDT | River Flood Warning | FSD | Plymouth, Sioux | 9 days |
| Oct 10, 9:46 AM CDT | River Flood Warning | FSD | Plymouth | 11 days |
| Oct 10, 10:31 AM CDT | River Flood Warning | DMX | Emmet | 12 days |
| Oct 10, 11:00 AM CDT | River Flood Warning | DVN | Johnson, Washington | 59 hr |
| Oct 10, 3:01 PM CDT | River Flood Warning | FSD | Clay | 60 hr |
| Oct 10, 11:12 PM CDT | River Flood Warning | FSD | Lyon | 51 hr |
| Oct 11, 2:15 AM CDT | River Flood Warning | FSD | Lyon, Sioux | 48 hr |
| Oct 11, 4:38 AM CDT | River Flood Warning | FSD | Sioux | 67 hr |
| Oct 11, 4:38 AM CDT | River Flood Warning | FSD | Plymouth | 10 days |
| Oct 11, 7:03 AM CDT | River Flood Warning | FSD | Lyon | 44 hr |
| Oct 12, 8:46 PM CDT | River Flood Warning | OAX | Mills | 7 days |
| Oct 15, 8:21 PM CDT | River Flood Warning | ARX | Allamakee, Clayton | 6 days |
| Oct 17, 10:38 AM CDT | River Flood Warning | DVN | Dubuque, Jackson | 6 days |
| Oct 21, 11:08 AM CDT | River Flood Warning | DVN | Scott | 3 days |
| Nov 2, 8:12 PM CDT | River Flood Warning | OAX | Fremont | 5 days |
| Nov 2, 8:15 PM CDT | River Flood Warning | FSD | Plymouth, Sioux | 5 days |
| Nov 2, 8:15 PM CDT | River Flood Warning | FSD | Plymouth | 24 hr |
| Nov 4, 7:12 PM CST | River Flood Warning | DVN | Clinton, Scott | 4 days |
| Nov 4, 7:21 PM CST | River Flood Warning | DVN | Iowa | 7 days |
| Nov 4, 7:21 PM CST | River Flood Warning | DVN | Johnson, Louisa, Washington | 3 days |
| Nov 4, 7:21 PM CST | River Flood Warning | DVN | Louisa | 49 hr |
| Nov 4, 7:21 PM CST | River Flood Warning | DVN | Louisa | 63 hr |
| Nov 4, 7:30 PM CST | River Flood Warning | DVN | Des Moines | 5 days |
| Nov 4, 7:30 PM CST | River Flood Warning | DVN | Des Moines, Lee | 5 days |
| Dec 2, 9:36 AM CST | River Flood Warning | OAX | Fremont | 44 hr |
| Dec 2, 10:10 AM CST | River Flood Warning | DVN | Lee | 33 hr |
| Dec 27, 6:32 PM CST | River Flood Warning | FSD | O'Brien | 15 hr |
| Dec 28, 10:24 AM CST | River Flood Warning | FSD | Clay | 47 hr |
| Dec 28, 10:24 AM CST | River Flood Warning | FSD | Clay | 58 hr |
| Dec 28, 10:24 AM CST | River Flood Warning | FSD | Buena Vista, Clay | 5 days |
| Dec 28, 3:53 PM CST | River Flood Warning | FSD | Clay, Dickinson | 3 days |
| Dec 28, 7:58 PM CST | River Flood Warning | DVN | Iowa | 38 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Clay County42
- Louisa County38
- Plymouth County37
- Lyon County30
- Black Hawk County27
- Sioux County26
- Dickinson County23
- Scott County20
- Polk County19
- Clayton County18
- Johnson County17
- Muscatine County17
- Des Moines County17
- Linn County16
- Clinton County15
- Lee County14
- Cedar County14
- Washington County12
- Webster County11
- Floyd County11
- Winneshiek County10
- Jackson County10
- Fremont County9
- Iowa County8
- Emmet County8
- Humboldt County8
- Jones County8
- Buena Vista County7
- Dubuque County7
- Mills County7
- Cherokee County6
- Allamakee County6
- Bremer County6
- Butler County6
- Story County6
- Dallas County6
- O'Brien County6
- Cerro Gordo County5
- Worth County5
- Woodbury County5
26 more counties
- Palo Alto County4
- Pocahontas County4
- Delaware County4
- Greene County4
- Hamilton County4
- Buchanan County4
- Tama County4
- Keokuk County3
- Boone County3
- Harrison County3
- Benton County3
- Henry County3
- Pottawattamie County2
- Kossuth County2
- Wright County2
- Jasper County2
- Marion County2
- Marshall County2
- Taylor County1
- Davis County1
- Wapello County1
- Decatur County1
- Montgomery County1
- Page County1
- Lucas County1
- Wayne County1
The busiest days
Days with the most alerts issued, by UTC date.
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. Rebuilt daily.