Weather alerts in Iowa, 1999
556 weather alerts in 1999, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 1999. Tap one for its archive.
- Alerts
- 556
- Warnings
- 500
- Watches
- 56
- Advisories
- 0
- Busiest month
- June155 alerts
- Busiest day
- May 16, 199987 alerts
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 |
|---|---|---|---|---|
| Feb 11, 11:15 AM CST | Severe Thunderstorm Watch | SPC | Des Moines, Henry, Jefferson, Lee, Louisa, Muscatine and 2 more | 7 hr |
| Feb 11, 12:06 PM CST | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 34 min |
| Apr 2, 10:22 PM CST | Severe Thunderstorm Warning | ARX | Floyd | 33 min |
| Apr 2, 10:55 PM CST | Severe Thunderstorm Warning | ARX | Chickasaw | 45 min |
| Apr 3, 2:00 AM CST | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Linn | 35 min |
| Apr 3, 3:12 PM CST | Severe Thunderstorm Warning | DVN | Iowa, Keokuk | 48 min |
| Apr 5, 3:30 PM CDT | Tornado Warning | OAX | Fremont, Page | 65 min |
| Apr 5, 4:05 PM CDT | Tornado Warning | DMX | Taylor | 35 min |
| Apr 5, 4:33 PM CDT | Tornado Warning | DMX | Adams, Union | 32 min |
| Apr 5, 4:45 PM CDT | Tornado Warning | DMX | Decatur, Ringgold | 30 min |
| Apr 5, 5:00 PM CDT | Tornado Watch | SPC | Appanoose, Clarke, Davis, Decatur, Henry, Jefferson and 11 more | 5 hr |
| Apr 5, 5:45 PM CDT | Tornado Warning | DMX | Warren | 35 min |
| Apr 5, 7:00 PM CDT | Tornado Watch | SPC | Des Moines, Louisa, Muscatine | 4 hr |
| Apr 5, 8:59 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones, Muscatine | 61 min |
| Apr 8, 6:20 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery | 50 min |
| Apr 8, 6:30 AM CDT | Severe Thunderstorm Watch | SPC | Fremont, Mills, Page | 6 hr |
| Apr 8, 7:36 AM CDT | Severe Thunderstorm Warning | DMX | Adair | 34 min |
| Apr 8, 7:47 AM CDT | Severe Thunderstorm Warning | DMX | Madison | 33 min |
| Apr 8, 8:37 AM CDT | Severe Thunderstorm Warning | DMX | Warren | 33 min |
| Apr 8, 9:41 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 49 min |
| Apr 8, 10:10 AM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 30 min |
| Apr 8, 10:23 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 32 min |
| Apr 8, 10:31 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 49 min |
| Apr 8, 11:03 AM CDT | Severe Thunderstorm Warning | OAX | Shelby | 37 min |
| Apr 8, 11:27 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 33 min |
| Apr 8, 11:43 AM CDT | Severe Thunderstorm Warning | DMX | Adair | 32 min |
| Apr 8, 11:45 AM CDT | Tornado Watch | SPC | Fremont, Mills, Page | 5 hr |
| Apr 8, 12:02 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 33 min |
| Apr 8, 12:05 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 35 min |
| Apr 8, 12:14 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 31 min |
| Apr 8, 12:39 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 36 min |
| Apr 8, 12:48 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 47 min |
| Apr 8, 1:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 33 more | 6 hr |
| Apr 8, 1:16 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Story | 34 min |
| Apr 8, 1:48 PM CDT | Severe Thunderstorm Warning | DMX | Story | 32 min |
| Apr 8, 1:58 PM CDT | Tornado Warning | OAX | Pottawattamie | 32 min |
| Apr 8, 2:05 PM CDT | Tornado Warning | OAX | Monona | 50 min |
| Apr 8, 2:10 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 50 min |
| Apr 8, 2:12 PM CDT | Tornado Warning | OAX | Fremont, Montgomery, Page | 33 min |
| Apr 8, 2:23 PM CDT | Tornado Warning | OAX | Harrison | 32 min |
| Apr 8, 2:40 PM CDT | Tornado Warning | OAX | Montgomery, Page | 30 min |
| Apr 8, 2:42 PM CDT | Tornado Warning | OAX | Pottawattamie | 33 min |
| Apr 8, 2:45 PM CDT | Tornado Warning | DMX | Adams, Taylor | 50 min |
| Apr 8, 2:53 PM CDT | Tornado Warning | OAX | Harrison, Monona | 32 min |
| Apr 8, 2:57 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin | 33 min |
| Apr 8, 2:59 PM CDT | Tornado Warning | DMX | Cass | 31 min |
| Apr 8, 3:18 PM CDT | Tornado Warning | DMX | Adair | 42 min |
| Apr 8, 3:21 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 29 min |
| Apr 8, 3:26 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 34 min |
| Apr 8, 3:32 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 48 min |
| Apr 8, 3:46 PM CDT | Tornado Warning | DMX | Guthrie | 49 min |
| Apr 8, 3:52 PM CDT | Tornado Warning | DMX | Union | 33 min |
| Apr 8, 3:55 PM CDT | Tornado Warning | DMX | Madison | 35 min |
| Apr 8, 4:20 PM CDT | Tornado Warning | DMX | Dallas | 50 min |
| Apr 8, 4:44 PM CDT | Tornado Warning | DMX | Wayne | 36 min |
| Apr 8, 4:47 PM CDT | Tornado Warning | DMX | Polk | 48 min |
| Apr 8, 4:56 PM CDT | Tornado Warning | DMX | Lucas, Warren | 49 min |
| Apr 8, 5:07 PM CDT | Tornado Warning | DMX | Marion | 48 min |
| Apr 8, 5:15 PM CDT | Tornado Warning | DMX | Dallas | 35 min |
| Apr 8, 5:15 PM CDT | Tornado Watch | SPC | Appanoose, Benton, Cedar, Clinton, Davis, Des Moines and 26 more | 4 hr |
| Apr 8, 5:37 PM CDT | Tornado Warning | DMX | Marion, Monroe | 33 min |
| Apr 8, 5:37 PM CDT | Tornado Warning | DMX | Jasper | 33 min |
| Apr 8, 5:49 PM CDT | Tornado Warning | DMX | Appanoose | 31 min |
| Apr 8, 5:51 PM CDT | Tornado Warning | DMX | Polk | 49 min |
| Apr 8, 5:52 PM CDT | Tornado Warning | DVN | Van Buren | 48 min |
| Apr 8, 6:05 PM CDT | Tornado Warning | DMX | Davis | 35 min |
| Apr 8, 6:06 PM CDT | Tornado Warning | DMX | Mahaska | 34 min |
| Apr 8, 6:13 PM CDT | Tornado Warning | DVN | Jefferson | 47 min |
| Apr 8, 6:16 PM CDT | Tornado Warning | DMX | Wapello | 34 min |
| Apr 8, 6:17 PM CDT | Tornado Warning | DVN | Lee | 48 min |
| Apr 8, 6:33 PM CDT | Tornado Warning | DVN | Keokuk, Washington | 47 min |
| Apr 10, 11:27 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 33 min |
| Apr 21, 3:17 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 28 min |
| Apr 21, 4:42 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 33 min |
| Apr 21, 11:12 PM CDT | Severe Thunderstorm Warning | DMX | Clarke | 48 min |
| May 3, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, Plymouth, Sioux | 5 hr |
| May 10, 7:15 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Carroll, Cass, Crawford, Fremont, Harrison and 5 more | 6 hr |
| May 11, 1:08 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 32 min |
| May 11, 3:42 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 33 min |
| May 14, 10:30 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Mills, Pottawattamie | 6 hr |
| May 15, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Mills | 6 hr |
| May 16, 1:05 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 30 min |
| May 16, 3:52 AM CDT | Severe Thunderstorm Warning | DMX | Clarke | 33 min |
| May 16, 4:09 AM CDT | Severe Thunderstorm Warning | DMX | Warren | 36 min |
| May 16, 6:00 AM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Crawford, Fremont, Harrison, Ida, Lyon and 11 more | 5 hr |
| May 16, 7:33 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 32 min |
| May 16, 7:51 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 24 min |
| May 16, 8:47 AM CDT | Severe Thunderstorm Warning | DMX | Greene | 33 min |
| May 16, 9:19 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene | 36 min |
| May 16, 9:20 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Ida | 25 min |
| May 16, 9:24 AM CDT | Severe Thunderstorm Warning | DMX | Sac | 41 min |
| May 16, 9:45 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 64 more | 5 hr |
| May 16, 10:12 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Story | 33 min |
| May 16, 10:28 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 32 min |
| May 16, 10:47 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Hardin | 33 min |
| May 16, 10:58 AM CDT | Severe Thunderstorm Warning | DMX | Webster | 32 min |
| May 16, 11:18 AM CDT | Severe Thunderstorm Warning | DMX | Hardin | 32 min |
| May 16, 11:23 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Wright | 47 min |
| May 16, 12:00 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 45 min |
| May 16, 12:27 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 63 min |
| May 16, 12:40 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 65 min |
| May 16, 12:46 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 34 min |
| May 16, 12:55 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 60 min |
| May 16, 1:18 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 57 min |
| May 16, 1:28 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 32 min |
| May 16, 1:43 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 62 min |
| May 16, 1:53 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 62 min |
| May 16, 2:05 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton | 55 min |
| May 16, 2:14 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 66 min |
| May 16, 2:15 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Buchanan, Clayton, Clinton and 8 more | 6 hr |
| May 16, 2:18 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 47 min |
| May 16, 2:36 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 44 min |
| May 16, 2:42 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 33 min |
| May 16, 2:52 PM CDT | Tornado Warning | OAX | Mills | 33 min |
| May 16, 2:56 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 49 min |
| May 16, 2:57 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 48 min |
| May 16, 3:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Butler and 37 more | 6 hr |
| May 16, 3:07 PM CDT | Tornado Warning | OAX | Harrison | 33 min |
| May 16, 3:19 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 36 min |
| May 16, 3:23 PM CDT | Tornado Warning | OAX | Mills | 37 min |
| May 16, 3:24 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 36 min |
| May 16, 3:32 PM CDT | Tornado Warning | OAX | Monona | 33 min |
| May 16, 3:37 PM CDT | Tornado Warning | OAX | Harrison | 48 min |
| May 16, 3:38 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 47 min |
| May 16, 3:40 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 65 min |
| May 16, 3:42 PM CDT | Tornado Warning | DMX | Crawford | 33 min |
| May 16, 3:47 PM CDT | Tornado Warning | OAX | Pottawattamie | 48 min |
| May 16, 3:49 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 26 min |
| May 16, 3:56 PM CDT | Tornado Warning | OAX | Mills | 34 min |
| May 16, 4:00 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 30 min |
| May 16, 4:13 PM CDT | Tornado Warning | DMX | Crawford | 17 min |
| May 16, 4:16 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 29 min |
| May 16, 4:20 PM CDT | Tornado Warning | DMX | Crawford | 50 min |
| May 16, 4:20 PM CDT | Tornado Warning | FSD | Ida | 30 min |
| May 16, 4:22 PM CDT | Tornado Warning | OAX | Harrison | 48 min |
| May 16, 4:24 PM CDT | Tornado Warning | OAX | Pottawattamie | 51 min |
| May 16, 4:27 PM CDT | Tornado Warning | OAX | Mills | 33 min |
| May 16, 4:33 PM CDT | Severe Thunderstorm Warning | DMX | Hardin | 32 min |
| May 16, 4:38 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy | 32 min |
| May 16, 4:43 PM CDT | Tornado Warning | DMX | Sac | 47 min |
| May 16, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Chickasaw and 10 more | 6 hr |
| May 16, 4:55 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 35 min |
| May 16, 5:01 PM CDT | Tornado Warning | OAX | Shelby | 44 min |
| May 16, 5:05 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Woodbury | 30 min |
| May 16, 5:08 PM CDT | Flash Flood Warning | ARX | Clayton, Fayette | 10 hr |
| May 16, 5:11 PM CDT | Tornado Warning | OAX | Harrison | 34 min |
| May 16, 5:14 PM CDT | Tornado Warning | OAX | Pottawattamie | 46 min |
| May 16, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Cerro Gordo, Chickasaw, Clay, Emmet, Floyd, Hancock and 7 more | 6 hr |
| May 16, 5:33 PM CDT | Tornado Warning | OAX | Mills | 37 min |
| May 16, 5:41 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Osceola | 34 min |
| May 16, 5:45 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 30 min |
| May 16, 5:45 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 35 min |
| May 16, 5:49 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 71 min |
| May 16, 5:52 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 68 min |
| May 16, 5:55 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 35 min |
| May 16, 6:00 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 45 min |
| May 16, 6:00 PM CDT | Tornado Warning | OAX | Pottawattamie | 30 min |
| May 16, 6:11 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery | 49 min |
| May 16, 6:13 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 32 min |
| May 16, 6:17 PM CDT | Flash Flood Warning | DMX | Hardin | 2 hr |
| May 16, 6:26 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 34 min |
| May 16, 6:33 PM CDT | Tornado Warning | OAX | Pottawattamie | 32 min |
| May 16, 6:37 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery | 48 min |
| May 16, 6:38 PM CDT | Tornado Warning | DMX | Audubon, Cass | 47 min |
| May 16, 6:43 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 47 min |
| May 16, 6:43 PM CDT | Flash Flood Warning | OAX | Pottawattamie | 6 hr |
| May 16, 6:55 PM CDT | Tornado Warning | OAX | Mills, Montgomery | 35 min |
| May 16, 7:00 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 90 min |
| May 16, 7:09 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jones | 61 min |
| May 16, 7:25 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 95 min |
| May 16, 7:35 PM CDT | Flash Flood Warning | DMX | Black Hawk | 115 min |
| May 16, 7:37 PM CDT | Flash Flood Warning | OAX | Montgomery | 6 hr |
| May 16, 7:39 PM CDT | Flash Flood Warning | DVN | Buchanan | 4 hr |
| May 16, 7:44 PM CDT | Tornado Warning | DMX | Boone, Dallas | 31 min |
| May 16, 7:52 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk, Warren | 48 min |
| May 16, 7:53 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 22 min |
| May 16, 7:54 PM CDT | Flash Flood Warning | DMX | Bremer | 3 hr |
| May 16, 8:16 PM CDT | Flash Flood Warning | DMX | Cass | 3 hr |
| May 16, 8:17 PM CDT | Tornado Warning | DMX | Boone, Story | 33 min |
| May 16, 8:36 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | 49 min |
| May 16, 8:44 PM CDT | Tornado Warning | DMX | Hamilton, Story | 31 min |
| May 16, 8:51 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 49 min |
| May 16, 9:00 PM CDT | Tornado Warning | DMX | Hardin | 50 min |
| May 16, 9:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Benton, Black Hawk, Boone and 38 more | 6 hr |
| May 16, 9:10 PM CDT | Tornado Warning | DVN | Dubuque | 35 min |
| May 16, 9:43 PM CDT | Flash Flood Warning | DMX | Black Hawk | 77 min |
| May 16, 9:46 PM CDT | Tornado Warning | DVN | Dubuque | 49 min |
| May 16, 10:02 PM CDT | Flash Flood Warning | DMX | Butler | 3 hr |
| May 16, 10:13 PM CDT | Tornado Warning | DVN | Benton | 47 min |
| May 16, 10:34 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 46 min |
| May 16, 10:40 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Johnson, Washington | 45 min |
| May 16, 10:40 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 45 min |
| May 16, 10:47 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee, Louisa | 63 min |
| May 16, 10:47 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine | 63 min |
| May 16, 10:54 PM CDT | Tornado Warning | DVN | Dubuque | 51 min |
| May 16, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Clinton, Jackson | 6 hr |
| May 16, 11:04 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 31 min |
| May 16, 11:15 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 50 min |
| May 16, 11:28 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 47 min |
| May 16, 11:36 PM CDT | Flash Flood Warning | DVN | Dubuque | 6 hr |
| May 16, 11:36 PM CDT | Flash Flood Warning | DVN | Buchanan, Delaware | 6 hr |
| May 16, 11:45 PM CDT | Severe Thunderstorm Watch | SPC | Des Moines, Lee | 5 hr |
| May 17, 8:47 AM CDT | Flash Flood Warning | DMX | Black Hawk | 6 hr |
| May 22, 5:03 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 42 min |
| May 22, 5:32 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 28 min |
| May 22, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Pottawattamie, Shelby | 4 hr |
| May 22, 7:09 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 31 min |
| May 22, 7:15 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 35 min |
| May 27, 4:11 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 34 min |
| May 27, 5:57 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Pocahontas | 33 min |
| May 27, 6:46 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 49 min |
| May 27, 7:14 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 46 min |
| May 30, 5:45 PM CDT | Flash Flood Warning | OAX | Page | 3 hr |
| Jun 1, 1:30 PM CDT | Tornado Watch | SPC | Appanoose, Cedar, Clarke, Clinton, Davis, Decatur and 22 more | 6 hr |
| Jun 1, 4:20 PM CDT | Tornado Warning | DVN | Clinton | 35 min |
| Jun 1, 4:27 PM CDT | Tornado Warning | DVN | Jackson | 28 min |
| Jun 1, 4:49 PM CDT | Tornado Warning | DVN | Jackson | 36 min |
| Jun 4, 2:23 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 37 min |
| Jun 4, 2:30 AM CDT | Severe Thunderstorm Watch | SPC | Audubon, Carroll, Crawford, Guthrie, Harrison, Ida and 4 more | 7 hr |
| Jun 4, 3:00 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 45 min |
| Jun 4, 4:00 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Allamakee, Appanoose, Audubon, Benton and 59 more | 6 hr |
| Jun 4, 5:46 AM CDT | Severe Thunderstorm Warning | DMX | Audubon | 34 min |
| Jun 4, 7:37 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 48 min |
| Jun 4, 9:05 AM CDT | Severe Thunderstorm Warning | DMX | Carroll | 30 min |
| Jun 4, 9:22 AM CDT | Severe Thunderstorm Warning | DMX | Carroll | 43 min |
| Jun 4, 10:00 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Appanoose, Benton, Boone, Cedar, Clarke and 34 more | 5 hr |
| Jun 4, 11:50 AM CDT | Severe Thunderstorm Warning | DMX | Madison | 35 min |
| Jun 4, 11:52 AM CDT | Severe Thunderstorm Warning | DMX | Tama | 48 min |
| Jun 4, 11:57 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 63 min |
| Jun 4, 12:04 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Warren | 46 min |
| Jun 4, 12:28 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 27 min |
| Jun 4, 12:38 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 32 min |
| Jun 4, 12:41 PM CDT | Tornado Warning | DMX | Lucas | 49 min |
| Jun 4, 12:59 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 51 min |
| Jun 4, 1:27 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 48 min |
| Jun 4, 1:44 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 46 min |
| Jun 4, 2:00 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 35 min |
| Jun 4, 2:07 PM CDT | Severe Thunderstorm Warning | DMX | Wayne | 48 min |
| Jun 4, 2:11 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 64 min |
| Jun 4, 2:11 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 64 min |
| Jun 4, 2:20 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 50 min |
| Jun 4, 2:27 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 48 min |
| Jun 4, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Des Moines, Henry, Lee, Van Buren | 5 hr |
| Jun 5, 4:15 PM CDT | Tornado Watch | SPC | Clay, Dickinson, Emmet, Kossuth, Lyon, O'Brien and 4 more | 7 hr |
| Jun 5, 4:39 PM CDT | Tornado Warning | FSD | Plymouth | 36 min |
| Jun 5, 5:04 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 41 min |
| Jun 5, 5:12 PM CDT | Tornado Warning | FSD | Plymouth, Sioux | 48 min |
| Jun 5, 5:15 PM CDT | Tornado Watch | SPC | Boone, Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee and 21 more | 6 hr |
| Jun 5, 5:30 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 30 min |
| Jun 5, 5:42 PM CDT | Tornado Warning | FSD | Cherokee, O'Brien | 33 min |
| Jun 5, 6:15 PM CDT | Tornado Warning | FSD | O'Brien | 15 min |
| Jun 5, 6:17 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 33 min |
| Jun 5, 6:21 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 34 min |
| Jun 5, 6:27 PM CDT | Tornado Warning | FSD | Plymouth | 33 min |
| Jun 5, 6:32 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson, O'Brien, Osceola | 48 min |
| Jun 5, 6:40 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 35 min |
| Jun 5, 6:49 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 41 min |
| Jun 5, 6:49 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 31 min |
| Jun 5, 7:08 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 32 min |
| Jun 5, 7:12 PM CDT | Flash Flood Warning | FSD | Clay, Dickinson, O'Brien, Osceola | 3 hr |
| Jun 5, 7:12 PM CDT | Flash Flood Warning | FSD | Sioux | 3 hr |
| Jun 5, 8:24 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 36 min |
| Jun 5, 9:00 PM CDT | Tornado Watch | SPC | Clay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 3 more | 5 hr |
| Jun 5, 9:24 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 36 min |
| Jun 5, 9:45 PM CDT | Tornado Watch | SPC | Allamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 11 more | 4 hr |
| Jun 6, 12:08 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson | 32 min |
| Jun 6, 12:38 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk, Washington | 32 min |
| Jun 6, 12:45 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 21 more | 5 hr |
| Jun 6, 12:49 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 36 min |
| Jun 6, 1:08 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Scott | 32 min |
| Jun 6, 1:22 PM CDT | Severe Thunderstorm Warning | DVN | Louisa | 33 min |
| Jun 6, 1:25 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 35 min |
| Jun 6, 1:45 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 50 min |
| Jun 6, 2:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 38 more | 6 hr |
| Jun 6, 2:30 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 50 min |
| Jun 6, 2:30 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 50 min |
| Jun 6, 2:32 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 33 min |
| Jun 6, 2:46 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 49 min |
| Jun 6, 2:51 PM CDT | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 49 min |
| Jun 6, 3:09 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth | 36 min |
| Jun 6, 3:19 PM CDT | Severe Thunderstorm Warning | DMX | Greene, Webster | 31 min |
| Jun 6, 3:24 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 51 min |
| Jun 6, 3:36 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 34 min |
| Jun 6, 3:39 PM CDT | Tornado Warning | DMX | Webster | 36 min |
| Jun 6, 3:47 PM CDT | Severe Thunderstorm Warning | DVN | Louisa | 33 min |
| Jun 6, 3:58 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Wright | 32 min |
| Jun 6, 3:58 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 32 min |
| Jun 6, 4:13 PM CDT | Tornado Warning | DMX | Wright | 32 min |
| Jun 6, 4:30 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin | 30 min |
| Jun 6, 4:33 PM CDT | Tornado Warning | DMX | Franklin | 32 min |
| Jun 6, 4:46 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 49 min |
| Jun 6, 4:51 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 59 min |
| Jun 6, 5:31 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 64 min |
| Jun 6, 5:45 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 35 min |
| Jun 6, 5:45 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 50 min |
| Jun 6, 5:52 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 33 min |
| Jun 6, 6:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Allamakee, Appanoose, Audubon, Benton and 55 more | 6 hr |
| Jun 6, 6:16 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 34 min |
| Jun 6, 6:29 PM CDT | Tornado Warning | DMX | Adair, Cass | 31 min |
| Jun 6, 6:36 PM CDT | Tornado Warning | DMX | Boone, Greene, Webster | 49 min |
| Jun 6, 6:42 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Wright | 33 min |
| Jun 6, 7:08 PM CDT | Tornado Warning | DMX | Hamilton | 32 min |
| Jun 6, 7:31 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 34 min |
| Jun 6, 7:36 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 64 min |
| Jun 6, 7:49 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 36 min |
| Jun 6, 7:55 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 60 min |
| Jun 7, 11:43 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 62 min |
| Jun 7, 11:43 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 62 min |
| Jun 8, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Allamakee, Benton, Black Hawk, Boone and 59 more | 6 hr |
| Jun 8, 1:22 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 33 min |
| Jun 8, 2:27 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 33 min |
| Jun 8, 2:29 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Winnebago | 51 min |
| Jun 8, 2:57 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson | 63 min |
| Jun 8, 2:57 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 48 min |
| Jun 8, 4:03 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 62 min |
| Jun 8, 5:45 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque | 65 min |
| Jun 8, 5:50 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 50 min |
| Jun 8, 6:04 PM CDT | Tornado Warning | DMX | Wright | 31 min |
| Jun 8, 6:28 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 32 min |
| Jun 8, 6:28 PM CDT | Flash Flood Warning | DVN | Buchanan, Delaware, Dubuque | 6 hr |
| Jun 8, 8:32 PM CDT | Flash Flood Warning | DMX | Black Hawk, Grundy | 6 hr |
| Jun 8, 10:54 PM CDT | Flash Flood Warning | DVN | Iowa, Keokuk | 3 hr |
| Jun 9, 1:40 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 30 min |
| Jun 9, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Hancock and 11 more | 6 hr |
| Jun 9, 2:09 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 31 min |
| Jun 9, 4:30 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 35 min |
| Jun 9, 5:08 PM CDT | Severe Thunderstorm Warning | OAX | Page | 32 min |
| Jun 9, 5:29 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 31 min |
| Jun 9, 5:38 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 62 min |
| Jun 9, 6:01 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 64 min |
| Jun 9, 6:50 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 25 min |
| Jun 9, 6:53 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 52 min |
| Jun 9, 6:59 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 46 min |
| Jun 9, 7:12 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 48 min |
| Jun 9, 7:20 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 35 min |
| Jun 9, 7:38 PM CDT | Severe Thunderstorm Warning | DMX | Story | 32 min |
| Jun 9, 7:41 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 64 min |
| Jun 10, 9:24 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Union | 31 min |
| Jun 10, 9:32 AM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 33 min |
| Jun 10, 10:10 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison | 35 min |
| Jun 10, 10:35 AM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clarke and 37 more | 5 hr |
| Jun 10, 12:57 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 48 min |
| Jun 10, 1:17 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 33 min |
| Jun 10, 1:28 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 32 min |
| Jun 10, 1:39 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson | 36 min |
| Jun 10, 1:52 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 33 min |
| Jun 10, 2:03 PM CDT | Tornado Warning | DVN | Linn | 32 min |
| Jun 10, 2:18 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 32 min |
| Jun 10, 2:25 PM CDT | Tornado Warning | DVN | Jones | 35 min |
| Jun 10, 2:58 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine, Scott | 32 min |
| Jun 10, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | Clinton, Jackson, Scott | 5 hr |
| Jun 11, 4:43 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 62 min |
| Jun 11, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Clinton, Jackson, Scott | 7 hr |
| Jun 11, 6:49 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 61 min |
| Jun 11, 9:00 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 60 min |
| Jun 11, 9:49 PM CDT | Flash Flood Warning | DVN | Benton, Iowa, Linn | 3 hr |
| Jun 12, 1:06 PM CDT | Tornado Warning | DVN | Henry | 34 min |
| Jun 12, 6:35 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 35 min |
| Jun 12, 6:51 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 34 min |
| Jun 12, 9:17 PM CDT | Flash Flood Warning | DVN | Clinton, Muscatine, Scott | 3 hr |
| Jun 12, 11:45 PM CDT | Flash Flood Warning | DVN | Lee, Van Buren | 2 hr |
| Jun 26, 9:20 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 35 min |
| Jun 26, 9:56 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 19 min |
| Jun 27, 1:15 AM CDT | Severe Thunderstorm Warning | DMX | Webster | 30 min |
| Jun 27, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | Harrison, Mills, Pottawattamie, Shelby | 6 hr |
| Jun 27, 5:19 AM CDT | Flash Flood Warning | OAX | Harrison | 3 hr |
| Jun 27, 6:00 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Clarke, Decatur, Fremont, Lucas, Mills and 6 more | 5 hr |
| Jun 27, 8:25 AM CDT | Flash Flood Warning | OAX | Harrison | 3 hr |
| Jul 2, 8:07 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 33 min |
| Jul 2, 8:43 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 47 min |
| Jul 2, 9:18 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 47 min |
| Jul 2, 9:27 AM CDT | Flash Flood Warning | FSD | Plymouth, Woodbury | 2 hr |
| Jul 2, 9:45 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 44 more | 5 hr |
| Jul 2, 10:04 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 46 min |
| Jul 2, 10:21 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 49 min |
| Jul 2, 10:36 AM CDT | Tornado Warning | OAX | Monona | 34 min |
| Jul 2, 10:47 AM CDT | Tornado Warning | DMX | Crawford | 48 min |
| Jul 2, 11:29 AM CDT | Tornado Warning | DMX | Crawford | 36 min |
| Jul 2, 11:32 AM CDT | Flash Flood Warning | FSD | Woodbury | 58 min |
| Jul 2, 11:41 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 49 min |
| Jul 2, 11:41 AM CDT | Severe Thunderstorm Warning | OAX | Shelby | 49 min |
| Jul 2, 11:55 AM CDT | Tornado Warning | OAX | Harrison, Monona | 35 min |
| Jul 2, 12:01 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 34 min |
| Jul 2, 12:15 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 28 more | 5 hr |
| Jul 2, 12:22 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 33 min |
| Jul 2, 12:35 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 50 min |
| Jul 2, 12:37 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 48 min |
| Jul 2, 12:45 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 50 min |
| Jul 2, 1:22 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 48 min |
| Jul 2, 1:25 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 50 min |
| Jul 2, 1:42 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 48 min |
| Jul 2, 2:07 PM CDT | Tornado Warning | DMX | Audubon | 33 min |
| Jul 2, 2:28 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 47 min |
| Jul 2, 3:00 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 65 min |
| Jul 2, 3:10 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 35 min |
| Jul 2, 3:16 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 19 min |
| Jul 2, 3:23 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 47 min |
| Jul 2, 3:29 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison | 36 min |
| Jul 2, 4:05 PM CDT | Severe Thunderstorm Warning | DMX | Madison | 35 min |
| Jul 2, 4:43 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 32 min |
| Jul 2, 5:12 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 33 min |
| Jul 2, 5:21 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 34 min |
| Jul 2, 5:24 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 31 min |
| Jul 2, 5:38 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 47 min |
| Jul 2, 5:46 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 34 min |
| Jul 2, 5:57 PM CDT | Severe Thunderstorm Warning | DMX | Story | 48 min |
| Jul 2, 7:10 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 50 min |
| Jul 2, 7:26 PM CDT | Severe Thunderstorm Warning | DMX | Hardin | 49 min |
| Jul 2, 9:53 PM CDT | Flash Flood Warning | DMX | Black Hawk, Butler | 4 hr |
| Jul 2, 10:16 PM CDT | Flash Flood Warning | DMX | Grundy, Hardin | 3 hr |
| Jul 2, 11:58 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 47 min |
| Jul 3, 2:00 AM CDT | Severe Thunderstorm Watch | SPC | Clay, Dickinson, Emmet, Kossuth, Lyon, Mitchell and 6 more | 5 hr |
| Jul 3, 10:34 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 51 min |
| Jul 3, 11:49 AM CDT | Severe Thunderstorm Warning | OAX | Shelby | 36 min |
| Jul 5, 7:49 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 31 min |
| Jul 5, 10:33 PM CDT | Flash Flood Warning | OAX | Pottawattamie | 2 hr |
| Jul 8, 5:44 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 51 min |
| Jul 8, 5:50 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 50 min |
| Jul 8, 6:00 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee, Chickasaw and 24 more | 5 hr |
| Jul 8, 6:29 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 46 min |
| Jul 8, 9:10 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 50 min |
| Jul 13, 9:30 PM CDT | Severe Thunderstorm Watch | SPC | Cerro Gordo, Clay, Dickinson, Emmet, Hancock, Kossuth and 5 more | 6 hr |
| Jul 15, 6:45 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, Osceola, Sioux | 5 hr |
| Jul 18, 3:21 AM CDT | Flash Flood Warning | FSD | Buena Vista, Cherokee, Ida, Woodbury | 3 hr |
| Jul 18, 5:47 PM CDT | Severe Thunderstorm Warning | DMX | Hancock | 33 min |
| Jul 18, 8:01 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 34 min |
| Jul 18, 11:49 PM CDT | Flash Flood Warning | ARX | Chickasaw | 3 hr |
| Jul 19, 2:32 AM CDT | Flash Flood Warning | ARX | Floyd, Mitchell | 3 hr |
| Jul 19, 2:37 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 33 min |
| Jul 19, 2:52 AM CDT | Flash Flood Warning | ARX | Chickasaw | 3 hr |
| Jul 19, 2:54 AM CDT | Severe Thunderstorm Warning | FSD | Osceola | 31 min |
| Jul 19, 3:11 AM CDT | Flash Flood Warning | DMX | Cerro Gordo, Worth | 3 hr |
| Jul 19, 3:16 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 34 min |
| Jul 19, 5:31 AM CDT | Flash Flood Warning | ARX | Floyd, Mitchell | 3 hr |
| Jul 19, 6:03 AM CDT | Flash Flood Warning | DMX | Cerro Gordo, Worth | 3 hr |
| Jul 19, 9:21 AM CDT | Flash Flood Warning | DMX | Cerro Gordo, Worth | 7 hr |
| Jul 19, 9:49 AM CDT | Flash Flood Warning | ARX | Floyd, Mitchell | 6 hr |
| Jul 19, 6:12 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 33 min |
| Jul 19, 6:24 PM CDT | Tornado Warning | DMX | Greene | 31 min |
| Jul 19, 7:15 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 50 min |
| Jul 19, 7:47 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 63 min |
| Jul 20, 2:51 AM CDT | Flash Flood Warning | FSD | Sioux | 4 hr |
| Jul 20, 4:11 AM CDT | Flash Flood Warning | FSD | Clay, O'Brien | 3 hr |
| Jul 20, 4:38 PM CDT | Flash Flood Warning | ARX | Floyd | 67 min |
| Jul 20, 4:38 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 67 min |
| Jul 20, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 41 more | 5 hr |
| Jul 20, 4:55 PM CDT | Flash Flood Warning | ARX | Chickasaw, Floyd | 3 hr |
| Jul 20, 5:06 PM CDT | Tornado Warning | ARX | Chickasaw, Floyd | 69 min |
| Jul 20, 5:16 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 34 min |
| Jul 20, 5:17 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 48 min |
| Jul 20, 5:59 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 61 min |
| Jul 20, 6:15 PM CDT | Flash Flood Warning | ARX | Howard, Mitchell | 3 hr |
| Jul 20, 6:25 PM CDT | Tornado Warning | ARX | Chickasaw | 50 min |
| Jul 20, 6:40 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 60 min |
| Jul 20, 6:45 PM CDT | Flash Flood Warning | DMX | Worth | 3 hr |
| Jul 20, 7:52 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 63 min |
| Jul 20, 8:00 PM CDT | Flash Flood Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 4 hr |
| Jul 20, 8:00 PM CDT | Flash Flood Warning | ARX | Fayette | 4 hr |
| Jul 20, 8:20 PM CDT | Flash Flood Warning | ARX | Clayton | 4 hr |
| Jul 20, 9:22 PM CDT | Flash Flood Warning | DMX | Bremer, Butler | 4 hr |
| Jul 20, 11:59 PM CDT | Flash Flood Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 6 hr |
| Jul 21, 2:29 AM CDT | Flash Flood Warning | FSD | Plymouth | 3 hr |
| Jul 21, 5:34 AM CDT | Flash Flood Warning | DMX | Worth | 3 hr |
| Jul 21, 5:45 AM CDT | Flash Flood Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 6 hr |
| Jul 21, 12:05 PM CDT | Flash Flood Warning | ARX | Chickasaw, Floyd | 9 hr |
| Jul 21, 5:44 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 31 min |
| Jul 21, 6:22 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 33 min |
| Jul 21, 6:28 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 47 min |
| Jul 21, 8:46 PM CDT | Flash Flood Warning | ARX | Chickasaw, Floyd | 9 hr |
| Jul 22, 3:20 AM CDT | Flash Flood Warning | ARX | Chickasaw, Floyd | 9 hr |
| Jul 23, 2:10 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 35 min |
| Jul 23, 7:47 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 33 min |
| Jul 23, 3:34 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 31 min |
| Jul 23, 3:48 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine, Scott | 47 min |
| Jul 23, 3:59 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 46 min |
| Jul 23, 4:12 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 48 min |
| Jul 23, 5:04 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 46 min |
| Jul 23, 5:06 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 49 min |
| Jul 23, 6:28 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 47 min |
| Jul 23, 6:43 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 47 min |
| Jul 23, 7:05 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine, Scott | 50 min |
| Jul 27, 4:48 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 62 min |
| Jul 27, 5:49 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 61 min |
| Jul 27, 5:50 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 30 min |
| Jul 27, 6:30 PM CDT | Tornado Watch | SPC | Dickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux | 6 hr |
| Jul 27, 10:45 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 32 more | 5 hr |
| Jul 27, 11:22 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 48 min |
| Jul 27, 11:40 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 60 min |
| Jul 27, 11:55 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 45 min |
| Jul 28, 4:50 AM CDT | Severe Thunderstorm Warning | DVN | Lee | 50 min |
| Jul 30, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Lyon | 6 hr |
| Jul 30, 7:16 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 49 min |
| Jul 30, 7:35 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 20 min |
| Jul 30, 7:50 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 70 min |
| Jul 30, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Cerro Gordo, Chickasaw, Floyd, Howard, Mitchell and 1 more | 5 hr |
| Jul 30, 8:33 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 32 min |
| Jul 30, 10:35 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 50 min |
| Jul 30, 11:00 PM CDT | Severe Thunderstorm Warning | OAX | Page | 60 min |
| Jul 30, 11:44 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 36 min |
| Jul 31, 12:26 AM CDT | Severe Thunderstorm Warning | DMX | Story | 34 min |
| Jul 31, 12:33 AM CDT | Severe Thunderstorm Warning | DMX | Polk | 32 min |
| Aug 6, 10:49 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 61 min |
| Aug 7, 12:03 AM CDT | Flash Flood Warning | OAX | Harrison | 6 hr |
| Aug 7, 12:45 AM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 50 min |
| Aug 7, 1:34 AM CDT | Severe Thunderstorm Warning | OAX | Mills | 36 min |
| Aug 7, 1:38 AM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 52 min |
| Aug 7, 1:50 AM CDT | Flash Flood Warning | OAX | Pottawattamie | 6 hr |
| Aug 7, 3:25 AM CDT | Flash Flood Warning | OAX | Mills, Montgomery | 6 hr |
| Aug 7, 4:45 AM CDT | Flash Flood Warning | DMX | Cass | 3 hr |
| Aug 7, 5:06 AM CDT | Flash Flood Warning | OAX | Harrison | 5 hr |
| Aug 7, 7:32 AM CDT | Flash Flood Warning | OAX | Pottawattamie | 3 hr |
| Aug 7, 8:42 AM CDT | Flash Flood Warning | OAX | Mills, Montgomery | 108 min |
| Aug 9, 11:57 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 33 min |
| Aug 9, 6:30 PM CDT | Tornado Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 14 more | 6 hr |
| Aug 9, 8:42 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 63 min |
| Aug 9, 9:00 PM CDT | Tornado Warning | DMX | Winnebago, Worth | 35 min |
| Aug 9, 9:24 PM CDT | Tornado Warning | DMX | Cerro Gordo | 46 min |
| Aug 9, 9:58 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 32 min |
| Aug 9, 10:10 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 35 min |
| Aug 9, 10:40 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 35 min |
| Aug 11, 10:23 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 32 min |
| Aug 12, 8:01 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 54 min |
| Aug 12, 8:35 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 40 min |
| Aug 12, 10:31 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 29 min |
| Aug 15, 10:09 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 31 min |
| Aug 15, 10:40 AM CDT | Severe Thunderstorm Warning | FSD | Osceola | 30 min |
| Aug 18, 12:15 AM CDT | Severe Thunderstorm Watch | SPC | Fremont, Mills, Montgomery, Page, Taylor | 5 hr |
| Aug 23, 11:04 AM CDT | Severe Thunderstorm Warning | ARX | Fayette | 61 min |
| Aug 23, 1:08 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 47 min |
| Aug 23, 1:37 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 63 min |
| Aug 23, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 8 more | 6 hr |
| Aug 23, 3:15 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 50 min |
| Aug 23, 3:49 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 46 min |
| Aug 23, 6:20 PM CDT | Tornado Warning | ARX | Winneshiek | 55 min |
| Aug 23, 7:58 PM CDT | Tornado Warning | ARX | Clayton | 42 min |
| Aug 29, 8:30 PM CDT | Flash Flood Warning | FSD | Woodbury | 2 hr |
| Sep 7, 5:03 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 62 min |
| Sep 7, 5:15 PM CDT | Tornado Watch | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 21 more | 6 hr |
| Sep 7, 5:35 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth | 35 min |
| Sep 7, 5:41 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 64 min |
| Sep 7, 6:15 PM CDT | Tornado Watch | SPC | Adair, Adams, Boone, Bremer, Butler, Cass and 27 more | 6 hr |
| Sep 7, 6:45 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Pottawattamie | 65 min |
| Sep 7, 6:50 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 35 min |
| Sep 7, 7:00 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 30 min |
| Sep 7, 7:10 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 50 min |
| Sep 7, 7:24 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 31 min |
| Sep 7, 7:33 PM CDT | Severe Thunderstorm Warning | DMX | Hancock | 32 min |
| Sep 7, 7:45 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 35 min |
| Sep 7, 7:53 PM CDT | Severe Thunderstorm Warning | OAX | Page | 17 min |
| Sep 7, 8:09 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 51 min |
| Sep 7, 8:32 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 63 min |
| Sep 7, 8:42 PM CDT | Severe Thunderstorm Warning | DMX | Adams | 48 min |
| Sep 7, 8:51 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 64 min |
| Sep 7, 9:37 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 33 min |
| Sep 7, 9:51 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 34 min |
| Sep 19, 4:07 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 33 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 340 |
| Tornado Warning | 97 |
| Severe Thunderstorm Watch | 37 |
| Tornado Watch | 19 |
| Flooding | |
| Flash Flood Warning | 63 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Mills County36
- Harrison County32
- Pottawattamie County32
- Floyd County30
- Shelby County28
- Chickasaw County27
- Montgomery County27
- Woodbury County25
- Cerro Gordo County24
- Mitchell County24
- Muscatine County23
- Fremont County23
- Page County23
- Monona County23
- Boone County23
- Hamilton County23
- Story County23
- Fayette County23
- Dallas County22
- Plymouth County22
- Jackson County21
- Buchanan County21
- Warren County21
- Greene County21
- Polk County21
- Webster County21
- Hardin County21
- Benton County21
- Scott County21
- Kossuth County21
- Worth County21
- Dubuque County20
- Linn County20
- Keokuk County20
- Clarke County20
- Cedar County20
- Madison County20
- Ida County20
- Audubon County20
- Cass County20
59 more counties
- Jasper County20
- Clinton County20
- Black Hawk County20
- Butler County20
- Hancock County20
- Cherokee County19
- Howard County19
- Wright County19
- Lucas County18
- Adair County18
- Carroll County18
- Bremer County18
- Franklin County18
- Lee County17
- Van Buren County17
- Taylor County17
- Marion County17
- Crawford County17
- Sioux County17
- Winnebago County17
- Clayton County17
- Iowa County16
- Adams County16
- Union County16
- Marshall County16
- Guthrie County16
- Grundy County16
- O'Brien County16
- Osceola County16
- Washington County15
- Ringgold County15
- Mahaska County15
- Monroe County15
- Jones County15
- Tama County15
- Lyon County15
- Clay County15
- Dickinson County15
- Palo Alto County15
- Winneshiek County15
- Jefferson County14
- Louisa County14
- Delaware County14
- Decatur County14
- Appanoose County14
- Wayne County14
- Calhoun County14
- Poweshiek County14
- Humboldt County14
- Allamakee County14
- Des Moines County13
- Wapello County13
- Johnson County13
- Henry County12
- Davis County12
- Buena Vista County12
- Emmet County12
- Pocahontas County12
- Sac County10
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.