Alert archive / Iowa / Mesoscale Discussions
Mesoscale Discussions in Iowa, 2019
161 mesoscale discussions in 2019. 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Mesoscale Discussions
- 161
- Busiest month
- May32 mesoscale discussions
- Busiest day
- May 28, 20198 mesoscale discussions
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 18, 11:07 AM CST | Mesoscale Discussion | SPC | Bremer, Cerro Gordo, Chickasaw, Dickinson, Emmet, Fayette and 11 more | 3 hr |
| Jan 18, 5:54 PM CST | Mesoscale Discussion | SPC | Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clarke and 35 more | 6 hr |
| Jan 18, 6:58 PM CST | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Clayton, Fayette, Howard, Mitchell and 2 more | 6 hr |
| Jan 22, 1:20 PM CST | Mesoscale Discussion | SPC | Appanoose, Davis, Decatur, Henry, Jefferson, Lucas and 5 more | 3 hr |
| Jan 22, 2:36 PM CST | Mesoscale Discussion | SPC | Clinton, Des Moines, Henry, Lee, Louisa, Muscatine and 1 more | 4 hr |
| Jan 27, 7:04 PM CST | Mesoscale Discussion | SPC | Allamakee, Winneshiek | 6 hr |
| Feb 5, 1:20 PM CST | Mesoscale Discussion | SPC | Emmet, Kossuth, Winnebago | 5 hr |
| Feb 5, 1:37 PM CST | Mesoscale Discussion | SPC | Benton, Cedar, Clinton, Davis, Delaware, Des Moines and 18 more | 5 hr |
| Feb 6, 9:33 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cedar, Clarke, Davis and 28 more | 6 hr |
| Feb 7, 6:26 AM CST | Mesoscale Discussion | SPC | Cedar, Clinton, Delaware, Des Moines, Dubuque, Henry and 9 more | 4 hr |
| Feb 16, 7:26 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 33 more | 5 hr |
| Feb 17, 12:46 AM CST | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Butler and 27 more | 4 hr |
| Feb 23, 5:26 PM CST | Mesoscale Discussion | SPC | Audubon, Boone, Buena Vista, Butler, Calhoun, Carroll and 34 more | 5 hr |
| Mar 9, 5:05 AM CST | Mesoscale Discussion | SPC | Clay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 1 more | 5 hr |
| Mar 9, 5:59 PM CST | Mesoscale Discussion | SPC | Allamakee | 5 hr |
| Apr 10, 10:08 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page, Pottawattamie | 2 hr |
| Apr 11, 2:34 AM CDT | Mesoscale Discussion | SPC | Dickinson, Lyon, Osceola, Sioux | 6 hr |
| Apr 17, 2:44 PM CDT | Mesoscale Discussion | SPC | Adair, Boone, Clarke, Dallas, Decatur, Franklin and 16 more | 91 min |
| Apr 17, 5:16 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 11 more | 89 min |
| Apr 22, 2:42 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 16 more | 2 hr |
| Apr 27, 5:14 AM CDT | Mesoscale Discussion | SPC | Bremer, Cerro Gordo, Chickasaw, Dickinson, Emmet, Floyd and 7 more | 6 hr |
| Apr 27, 11:32 AM CDT | Mesoscale Discussion | SPC | Clayton, Dubuque | 6 hr |
| May 5, 1:35 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Black Hawk, Boone, Butler, Calhoun and 21 more | 2 hr |
| May 5, 6:33 PM CDT | Mesoscale Discussion | SPC | Fremont | 87 min |
| May 8, 1:11 PM CDT | Mesoscale Discussion | SPC | Appanoose, Cedar, Davis, Des Moines, Henry, Iowa and 13 more | 94 min |
| May 14, 5:31 PM CDT | Mesoscale Discussion | SPC | Ringgold | 119 min |
| May 16, 7:14 PM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clarke, Clinton, Dubuque, Iowa and 17 more | 2 hr |
| May 16, 11:12 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Benton, Black Hawk, Boone, Carroll and 34 more | 2 hr |
| May 18, 6:59 PM CDT | Mesoscale Discussion | SPC | Des Moines, Lee, Van Buren | 2 hr |
| May 21, 8:46 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page | 59 min |
| May 22, 5:59 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Lee, Louisa, Van Buren | 2 hr |
| May 22, 8:12 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Lee, Louisa | 63 min |
| May 24, 4:05 AM CDT | Mesoscale Discussion | SPC | Adams, Fremont, Mills, Montgomery, Page, Ringgold and 2 more | 115 min |
| May 24, 6:43 AM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 13 more | 2 hr |
| May 24, 3:25 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Black Hawk, Bremer, Buchanan, Cedar and 38 more | 65 min |
| May 24, 7:00 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Chickasaw, Clayton and 5 more | 2 hr |
| May 24, 8:57 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Delaware, Des Moines, Dubuque, Jackson and 4 more | 2 hr |
| May 24, 9:17 PM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Fayette, Winneshiek | 118 min |
| May 25, 3:24 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Des Moines, Henry, Jefferson, Lee and 2 more | 3 hr |
| May 25, 6:48 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 57 min |
| May 27, 12:50 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Des Moines, Henry, Jackson, Johnson and 5 more | 85 min |
| May 27, 1:18 PM CDT | Mesoscale Discussion | SPC | Howard, Mitchell, Winneshiek | 57 min |
| May 27, 3:57 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Des Moines, Henry, Lee, Louisa and 2 more | 93 min |
| May 27, 11:42 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page, Taylor | 63 min |
| May 28, 1:23 AM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Des Moines and 12 more | 2 hr |
| May 28, 4:58 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Clarke, Dallas and 14 more | 2 hr |
| May 28, 7:44 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Clarke, Dallas and 17 more | 2 hr |
| May 28, 9:42 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Clarke, Davis and 16 more | 93 min |
| May 28, 11:31 AM CDT | Mesoscale Discussion | SPC | Davis, Des Moines, Lee, Van Buren | 89 min |
| May 28, 2:55 PM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Davis, Decatur, Jasper, Jefferson and 15 more | 95 min |
| May 28, 5:12 PM CDT | Mesoscale Discussion | SPC | Decatur, Wayne | 93 min |
| May 28, 9:52 PM CDT | Mesoscale Discussion | SPC | Fremont, Page, Ringgold, Taylor | 53 min |
| May 29, 5:24 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cherokee, Clay, Humboldt, Ida and 3 more | 2 hr |
| May 29, 6:17 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Buchanan, Butler, Cedar, Franklin and 19 more | 118 min |
| Jun 1, 3:02 PM CDT | Mesoscale Discussion | SPC | Appanoose, Cedar, Clinton, Davis, Des Moines, Henry and 10 more | 118 min |
| Jun 4, 4:43 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 18 more | 2 hr |
| Jun 4, 7:40 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buchanan, Butler, Cerro Gordo, Chickasaw and 14 more | 2 hr |
| Jun 5, 10:03 AM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Jefferson, Lee, Louisa, Van Buren | 117 min |
| Jun 15, 12:30 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Butler and 51 more | 2 hr |
| Jun 15, 3:50 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 52 more | 115 min |
| Jun 15, 5:47 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Black Hawk, Boone, Buchanan, Cedar and 39 more | 88 min |
| Jun 21, 2:07 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Carroll, Cass, Crawford and 12 more | 83 min |
| Jun 21, 4:34 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Clarke, Fremont, Harrison and 9 more | 86 min |
| Jun 21, 7:26 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Clarke, Decatur and 9 more | 94 min |
| Jun 21, 11:33 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Des Moines and 12 more | 87 min |
| Jun 24, 12:35 PM CDT | Mesoscale Discussion | SPC | Cedar, Clayton, Clinton, Delaware, Dubuque, Jackson and 2 more | 85 min |
| Jun 25, 2:19 AM CDT | Mesoscale Discussion | SPC | Audubon, Carroll, Cass, Crawford, Harrison, Ida and 7 more | 2 hr |
| Jun 25, 1:58 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 20 more | 92 min |
| Jun 25, 5:59 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Decatur, Fremont, Lucas and 5 more | 2 hr |
| Jun 26, 1:55 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Clarke, Decatur, Fremont and 12 more | 2 hr |
| Jun 27, 7:33 AM CDT | Mesoscale Discussion | SPC | Dickinson, Emmet, Osceola | 117 min |
| Jun 27, 8:46 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 23 more | 89 min |
| Jun 27, 11:14 AM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Buena Vista, Butler and 24 more | 91 min |
| Jun 27, 1:55 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 30 more | 95 min |
| Jun 27, 3:27 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Delaware, Dubuque, Jackson, Jones and 2 more | 93 min |
| Jun 27, 5:51 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 15 more | 84 min |
| Jun 27, 10:04 PM CDT | Mesoscale Discussion | SPC | Howard, Mitchell, Winnebago, Worth | 2 hr |
| Jun 28, 3:21 AM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Butler, Cerro Gordo, Chickasaw and 11 more | 2 hr |
| Jun 28, 10:55 AM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Lucas, Monroe, Van Buren, Wayne | 2 hr |
| Jun 28, 2:04 PM CDT | Mesoscale Discussion | SPC | Lee | 86 min |
| Jun 30, 3:06 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Cerro Gordo, Chickasaw, Clayton, Delaware and 6 more | 84 min |
| Jun 30, 5:20 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Cedar and 21 more | 115 min |
| Jun 30, 7:56 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Jefferson, Lee, Louisa, Van Buren and 1 more | 2 hr |
| Jun 30, 11:11 PM CDT | Mesoscale Discussion | SPC | Howard, Mitchell, Worth | 64 min |
| Jul 1, 1:31 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Lyon and 5 more | 119 min |
| Jul 1, 5:09 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cerro Gordo, Cherokee, Chickasaw, Clay, Dickinson and 16 more | 2 hr |
| Jul 1, 5:55 PM CDT | Mesoscale Discussion | SPC | Allamakee, Winneshiek | 3 hr |
| Jul 2, 3:42 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Benton, Black Hawk, Boone and 43 more | 93 min |
| Jul 3, 4:47 PM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clinton, Dallas, Des Moines, Grundy and 22 more | 2 hr |
| Jul 5, 4:54 AM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Page | 2 hr |
| Jul 5, 5:00 PM CDT | Mesoscale Discussion | SPC | Cerro Gordo, Floyd, Hancock, Kossuth, Mitchell, Winnebago and 1 more | 2 hr |
| Jul 9, 5:30 PM CDT | Mesoscale Discussion | SPC | Cedar, Clayton, Clinton, Delaware, Dubuque, Jackson and 3 more | 2 hr |
| Jul 12, 10:05 AM CDT | Mesoscale Discussion | SPC | Lyon | 85 min |
| Jul 13, 2:12 PM CDT | Mesoscale Discussion | SPC | Lyon | 2 hr |
| Jul 15, 3:12 PM CDT | Mesoscale Discussion | SPC | Dickinson, Lyon, Osceola, Sioux | 93 min |
| Jul 17, 4:14 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Ida, Lyon, Monona and 6 more | 91 min |
| Jul 17, 9:09 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Benton, Black Hawk, Boone and 72 more | 96 min |
| Jul 17, 12:59 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clarke and 28 more | 2 hr |
| Jul 17, 10:43 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 10 more | 2 hr |
| Jul 18, 4:54 PM CDT | Mesoscale Discussion | SPC | Lyon | 66 min |
| Jul 20, 5:02 AM CDT | Mesoscale Discussion | SPC | Dickinson, Emmet, Lyon, Osceola | 88 min |
| Jul 20, 7:40 AM CDT | Mesoscale Discussion | SPC | Cerro Gordo, Chickasaw, Clay, Dickinson, Emmet, Floyd and 12 more | 95 min |
| Jul 20, 10:05 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Butler, Cerro Gordo, Chickasaw, Emmet, Floyd and 14 more | 115 min |
| Jul 20, 4:40 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 21 more | 95 min |
| Jul 20, 6:54 PM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Davis, Decatur, Des Moines, Henry and 11 more | 66 min |
| Jul 20, 11:01 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Fremont, Harrison and 8 more | 119 min |
| Jul 27, 12:46 AM CDT | Mesoscale Discussion | SPC | Winnebago, Worth | 89 min |
| Jul 28, 9:30 PM CDT | Mesoscale Discussion | SPC | Plymouth, Sioux, Woodbury | 90 min |
| Aug 5, 1:18 PM CDT | Mesoscale Discussion | SPC | Howard, Kossuth, Mitchell, Winnebago, Worth | 117 min |
| Aug 5, 2:43 PM CDT | Mesoscale Discussion | SPC | Boone, Buena Vista, Butler, Calhoun, Carroll, Cerro Gordo and 19 more | 2 hr |
| Aug 5, 6:14 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 22 more | 2 hr |
| Aug 9, 6:59 PM CDT | Mesoscale Discussion | SPC | Plymouth, Sioux | 2 hr |
| Aug 10, 3:56 PM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cerro Gordo and 20 more | 2 hr |
| Aug 12, 1:15 AM CDT | Mesoscale Discussion | SPC | Fremont | 90 min |
| Aug 12, 3:46 PM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clinton, Davis, Des Moines, Henry and 21 more | 89 min |
| Aug 15, 7:48 PM CDT | Mesoscale Discussion | SPC | Lyon, Osceola, Sioux | 117 min |
| Aug 17, 5:12 PM CDT | Mesoscale Discussion | SPC | Dickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux | 2 hr |
| Aug 17, 8:26 PM CDT | Mesoscale Discussion | SPC | Cherokee, Dickinson, Lyon, O'Brien, Osceola, Plymouth and 1 more | 94 min |
| Aug 17, 10:32 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 21 more | 88 min |
| Aug 18, 12:00 AM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 44 more | 90 min |
| Aug 18, 2:45 AM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Davis, Decatur, Jefferson, Lucas and 10 more | 2 hr |
| Aug 18, 5:44 AM CDT | Mesoscale Discussion | SPC | Clinton, Jackson, Scott | 91 min |
| Aug 18, 7:40 AM CDT | Mesoscale Discussion | SPC | Clinton, Scott | 2 hr |
| Aug 19, 11:05 PM CDT | Mesoscale Discussion | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 21 more | 115 min |
| Aug 20, 3:08 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 55 more | 97 min |
| Aug 20, 5:43 AM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Buchanan, Cedar, Clinton, Davis and 24 more | 92 min |
| Aug 20, 9:04 AM CDT | Mesoscale Discussion | SPC | Clinton, Des Moines, Henry, Lee, Louisa, Muscatine and 2 more | 86 min |
| Aug 29, 10:55 AM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Des Moines, Henry, Jefferson, Lee and 3 more | 95 min |
| Sep 2, 6:37 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 12 more | 83 min |
| Sep 2, 11:39 PM CDT | Mesoscale Discussion | SPC | Allamakee | 2 hr |
| Sep 9, 2:49 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 58 more | 116 min |
| Sep 9, 6:07 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 7 more | 83 min |
| Sep 9, 7:49 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 11 more | 86 min |
| Sep 10, 11:31 PM CDT | Mesoscale Discussion | SPC | Dickinson, Lyon, O'Brien, Osceola, Sioux | 89 min |
| Sep 11, 2:09 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Cerro Gordo, Emmet, Floyd, Hancock, Humboldt and 8 more | 96 min |
| Sep 12, 1:12 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 48 more | 2 hr |
| Sep 12, 2:02 PM CDT | Mesoscale Discussion | SPC | Decatur, Ringgold, Wayne | 118 min |
| Sep 12, 3:46 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Cerro Gordo, Chickasaw, Clayton, Fayette and 5 more | 119 min |
| Sep 12, 6:04 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Delaware, Des Moines, Dubuque, Jackson and 5 more | 116 min |
| Sep 18, 10:28 PM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Buena Vista, Butler, Calhoun, Carroll and 36 more | 2 hr |
| Sep 21, 1:33 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 15 more | 87 min |
| Sep 21, 7:54 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Cass, Clarke and 19 more | 2 hr |
| Sep 21, 10:32 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page | 118 min |
| Sep 24, 3:13 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buena Vista, Butler, Cerro Gordo, Chickasaw and 17 more | 3 hr |
| Sep 24, 6:33 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 40 more | 117 min |
| Sep 24, 11:24 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Clarke, Madison, Montgomery, Page and 3 more | 66 min |
| Sep 27, 3:01 PM CDT | Mesoscale Discussion | SPC | Appanoose, Cedar, Clinton, Davis, Des Moines, Henry and 12 more | 119 min |
| Sep 27, 5:37 PM CDT | Mesoscale Discussion | SPC | Appanoose, Wayne | 2 hr |
| Sep 27, 6:21 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Des Moines, Henry, Jefferson, Johnson and 6 more | 114 min |
| Sep 27, 7:37 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Iowa, Keokuk, Lucas, Mahaska and 4 more | 53 min |
| Sep 27, 9:18 PM CDT | Mesoscale Discussion | SPC | Des Moines, Lee, Van Buren | 117 min |
| Sep 30, 4:55 PM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Emmet, O'Brien | 2 hr |
| Oct 1, 2:08 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Fremont, Madison, Montgomery and 3 more | 67 min |
| Oct 1, 3:24 PM CDT | Mesoscale Discussion | SPC | Adams, Montgomery, Page | 66 min |
| Oct 1, 5:03 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Bremer, Buchanan, Cedar, Chickasaw and 15 more | 117 min |
| Oct 1, 6:05 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Benton, Black Hawk, Clarke, Decatur and 13 more | 85 min |
| Oct 1, 8:54 PM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clinton, Delaware, Dubuque, Iowa and 6 more | 96 min |
| Oct 20, 5:30 PM CDT | Mesoscale Discussion | SPC | Fremont, Page, Taylor | 2 hr |
| Oct 20, 5:48 PM CDT | Mesoscale Discussion | SPC | Harrison, Mills | 117 min |
| Nov 26, 5:23 PM CST | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Ida and 10 more | 6 hr |
| Dec 9, 11:18 AM CST | Mesoscale Discussion | SPC | Allamakee, Buchanan, Clayton, Delaware, Fayette, Winneshiek | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Worth County37
- Cerro Gordo County35
- Floyd County34
- Mitchell County34
- Winnebago County34
- Clinton County34
- Delaware County34
- Des Moines County34
- Louisa County34
- Cedar County33
- Scott County33
- Union County33
- Kossuth County32
- Jones County32
- Chickasaw County31
- Emmet County31
- Henry County31
- Hancock County30
- Clarke County30
- Lee County30
- Marion County30
- Muscatine County30
- Ringgold County30
- Franklin County30
- Bremer County29
- Dickinson County29
- Winneshiek County29
- Benton County29
- Black Hawk County29
- Buchanan County29
- Linn County29
- Lucas County29
- Madison County29
- Van Buren County29
- Fayette County28
- Appanoose County28
- Johnson County28
- Keokuk County28
- Mahaska County28
- Poweshiek County28
59 more counties
- Adams County28
- Butler County28
- Hardin County28
- Palo Alto County27
- Davis County27
- Dubuque County27
- Monroe County27
- Polk County27
- Tama County27
- Warren County27
- Washington County27
- Wayne County27
- Grundy County27
- Osceola County26
- Decatur County26
- Jackson County26
- Wapello County26
- Allamakee County26
- Clayton County26
- Page County26
- Howard County25
- Jasper County25
- Jefferson County25
- Marshall County25
- Adair County25
- Taylor County25
- Montgomery County25
- Hamilton County25
- Buena Vista County25
- Wright County25
- Lyon County24
- Iowa County24
- Cass County24
- Fremont County24
- Humboldt County24
- Pocahontas County24
- Story County23
- Boone County22
- Dallas County22
- Guthrie County22
- Shelby County22
- Clay County22
- O'Brien County22
- Webster County22
- Sioux County22
- Mills County21
- Pottawattamie County21
- Audubon County20
- Greene County20
- Calhoun County20
- Carroll County19
- Sac County19
- Cherokee County18
- Ida County18
- Harrison County17
- Plymouth County17
- Monona County16
- Woodbury County16
- Crawford County15
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.