Alert archive / Iowa / Mesoscale Discussions
Mesoscale Discussions in Iowa, 2009
178 mesoscale discussions in 2009. 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 2009. Tap one for its archive.
- Mesoscale Discussions
- 178
- Busiest month
- June62 mesoscale discussions
- Busiest day
- June 18, 200910 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 3, 6:16 PM CST | Mesoscale Discussion | SPC | Allamakee, Bremer, Chickasaw, Clayton, Fayette, Floyd and 3 more | 5 hr |
| Jan 12, 10:56 AM CST | Mesoscale Discussion | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 23 more | 6 hr |
| Jan 12, 6:27 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 89 more | 4 hr |
| Jan 13, 6:12 PM CST | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Buchanan, Buena Vista, Butler and 44 more | 4 hr |
| Jan 13, 11:38 PM CST | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 35 more | 4 hr |
| Feb 9, 8:43 AM CST | Mesoscale Discussion | SPC | Adams, Fremont, Montgomery, Page, Ringgold, Taylor | 32 min |
| Feb 13, 11:07 AM CST | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 23 more | 3 hr |
| Feb 26, 6:33 AM CST | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 18 more | 5 hr |
| Feb 26, 9:26 AM CST | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Boone and 40 more | 2 hr |
| Feb 27, 6:22 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Fremont, Harrison and 9 more | 4 hr |
| Mar 6, 9:17 PM CST | Mesoscale Discussion | SPC | Decatur, Page, Ringgold, Taylor, Wayne | 118 min |
| Mar 7, 8:09 PM CST | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Ida and 11 more | 4 hr |
| Mar 8, 12:58 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 6 more | 4 hr |
| Mar 22, 11:28 PM CDT | Mesoscale Discussion | SPC | Cerro Gordo, Dickinson, Emmet, Franklin, Hamilton, Hancock and 8 more | 3 hr |
| Mar 23, 3:11 PM CDT | Mesoscale Discussion | SPC | Crawford, Fremont, Harrison, Mills, Monona, Plymouth and 3 more | 94 min |
| Mar 23, 6:04 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Buena Vista, Carroll, Cass and 26 more | 116 min |
| Mar 31, 1:26 PM CDT | Mesoscale Discussion | SPC | Dickinson, Lyon, O'Brien, Osceola, Sioux | 3 hr |
| Apr 4, 6:20 PM CDT | Mesoscale Discussion | SPC | Decatur, Page, Ringgold, Taylor, Wayne | 115 min |
| Apr 4, 9:11 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 4 more | 4 hr |
| Apr 24, 3:18 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 25 more | 2 hr |
| Apr 24, 7:42 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Benton, Black Hawk, Boone and 35 more | 63 min |
| Apr 24, 9:40 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Black Hawk, Boone, Bremer and 23 more | 65 min |
| Apr 25, 5:32 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Delaware, Des Moines, Dubuque, Henry and 11 more | 73 min |
| Apr 25, 7:17 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Wapello, Wayne | 58 min |
| Apr 25, 9:23 PM CDT | Mesoscale Discussion | SPC | Davis, Des Moines, Henry, Lee, Van Buren | 67 min |
| Apr 26, 9:18 AM CDT | Mesoscale Discussion | SPC | Audubon, Crawford, Harrison, Mills, Monona, Pottawattamie and 2 more | 27 min |
| Apr 26, 12:30 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Cass, Dallas and 13 more | 60 min |
| Apr 26, 2:41 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 35 more | 3 hr |
| Apr 26, 5:14 PM CDT | Mesoscale Discussion | SPC | Clayton, Delaware, Dubuque, Jackson | 61 min |
| Apr 26, 6:14 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 40 more | 61 min |
| Apr 26, 8:21 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Black Hawk, Bremer, Buchanan, Butler and 33 more | 54 min |
| Apr 26, 11:15 PM CDT | Mesoscale Discussion | SPC | Davis, Iowa, Jefferson, Johnson, Keokuk, Linn and 3 more | 60 min |
| May 6, 1:55 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Crawford, Dickinson, Ida and 8 more | 65 min |
| May 7, 1:12 PM CDT | Mesoscale Discussion | SPC | Decatur, Fremont, Mills, Montgomery, Page, Ringgold and 1 more | 93 min |
| May 7, 3:55 PM CDT | Mesoscale Discussion | SPC | Appanoose, Decatur, Fremont, Montgomery, Page, Ringgold and 2 more | 65 min |
| May 7, 5:42 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 8 more | 2 hr |
| May 7, 5:56 PM CDT | Mesoscale Discussion | SPC | Lee | 64 min |
| May 8, 1:05 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 54 more | 85 min |
| May 8, 5:47 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clayton and 29 more | 58 min |
| May 8, 8:35 PM CDT | Mesoscale Discussion | SPC | Des Moines | 85 min |
| May 12, 1:22 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Decatur, Fremont and 10 more | 53 min |
| May 12, 8:42 PM CDT | Mesoscale Discussion | SPC | Lyon | 93 min |
| May 13, 1:52 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Lee, Monroe, Van Buren, Wayne | 23 min |
| May 13, 5:47 PM CDT | Mesoscale Discussion | SPC | Appanoose, Cedar, Clinton, Davis, Des Moines, Henry and 16 more | 88 min |
| May 13, 7:05 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Des Moines, Henry, Jefferson, Keokuk and 6 more | 85 min |
| May 13, 8:35 PM CDT | Mesoscale Discussion | SPC | Lee | 85 min |
| May 15, 2:03 AM CDT | Mesoscale Discussion | SPC | Fremont, Page, Ringgold, Taylor | 87 min |
| May 15, 7:14 AM CDT | Mesoscale Discussion | SPC | Adams, Fremont, Mills, Montgomery, Page, Ringgold and 1 more | 91 min |
| May 15, 11:48 AM CDT | Mesoscale Discussion | SPC | Fremont, Page | 57 min |
| May 15, 1:17 PM CDT | Mesoscale Discussion | SPC | Lyon, Osceola | 58 min |
| Jun 1, 1:31 PM CDT | Mesoscale Discussion | SPC | Clinton, Scott | 59 min |
| Jun 1, 2:55 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Clarke, Decatur and 13 more | 2 hr |
| Jun 1, 5:25 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 12 more | 2 hr |
| Jun 1, 6:52 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 14 more | 83 min |
| Jun 1, 9:27 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 12 more | 63 min |
| Jun 6, 2:22 AM CDT | Mesoscale Discussion | SPC | Adams, Cass, Decatur, Fremont, Harrison, Mills and 6 more | 23 min |
| Jun 6, 3:12 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 34 more | 2 hr |
| Jun 6, 11:04 PM CDT | Mesoscale Discussion | SPC | Adams, Fremont, Mills, Montgomery, Page, Taylor | 86 min |
| Jun 7, 12:44 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 36 more | 61 min |
| Jun 7, 4:45 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Cedar, Clarke and 31 more | 30 min |
| Jun 7, 11:16 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee, Clay and 24 more | 119 min |
| Jun 7, 2:36 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page, Taylor | 114 min |
| Jun 7, 5:21 PM CDT | Mesoscale Discussion | SPC | Boone, Bremer, Buena Vista, Butler, Calhoun, Carroll and 25 more | 54 min |
| Jun 7, 5:31 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Henry, Iowa, Jefferson, Keokuk and 10 more | 59 min |
| Jun 7, 8:49 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Buchanan, Cedar, Davis, Henry and 18 more | 56 min |
| Jun 7, 10:22 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Dallas, Fremont, Madison and 7 more | 53 min |
| Jun 8, 2:30 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Clarke, Dallas and 22 more | 60 min |
| Jun 8, 3:25 AM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Jefferson, Lee, Louisa, Van Buren | 65 min |
| Jun 12, 5:32 PM CDT | Mesoscale Discussion | SPC | Decatur, Fremont, Page, Ringgold, Taylor | 58 min |
| Jun 15, 7:33 PM CDT | Mesoscale Discussion | SPC | Adams, Cass, Fremont, Mills, Montgomery, Page and 3 more | 87 min |
| Jun 15, 9:32 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page | 88 min |
| Jun 15, 11:18 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Clarke, Davis and 14 more | 87 min |
| Jun 16, 2:30 AM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page, Pottawattamie, Taylor | 60 min |
| Jun 16, 8:47 PM CDT | Mesoscale Discussion | SPC | Lyon, Sioux | 58 min |
| Jun 17, 2:47 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Fremont, Mills, Montgomery and 5 more | 28 min |
| Jun 17, 5:43 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 28 more | 92 min |
| Jun 17, 6:44 PM CDT | Mesoscale Discussion | SPC | Bremer, Butler, Cerro Gordo, Chickasaw, Fayette, Floyd and 4 more | 31 min |
| Jun 17, 8:04 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Fremont, Guthrie and 8 more | 56 min |
| Jun 17, 11:07 PM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Clayton, Fayette, Howard, Winneshiek | 53 min |
| Jun 17, 11:33 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Pottawattamie | 87 min |
| Jun 18, 1:01 AM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Decatur, Des Moines, Henry, Jefferson and 6 more | 89 min |
| Jun 18, 3:20 AM CDT | Mesoscale Discussion | SPC | Davis, Des Moines, Henry, Iowa, Jefferson, Johnson and 12 more | 85 min |
| Jun 18, 6:41 AM CDT | Mesoscale Discussion | SPC | Black Hawk, Boone, Bremer, Buchanan, Buena Vista, Butler and 31 more | 94 min |
| Jun 18, 9:42 AM CDT | Mesoscale Discussion | SPC | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 8 more | 93 min |
| Jun 18, 1:17 PM CDT | Mesoscale Discussion | SPC | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 11 more | 88 min |
| Jun 18, 3:15 PM CDT | Mesoscale Discussion | SPC | Black Hawk, Boone, Bremer, Buena Vista, Butler, Calhoun and 25 more | 90 min |
| Jun 18, 6:52 PM CDT | Mesoscale Discussion | SPC | Lyon, Sioux | 113 min |
| Jun 18, 8:23 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Chickasaw, Clayton, Delaware, Dubuque and 5 more | 97 min |
| Jun 19, 1:33 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 26 more | 57 min |
| Jun 19, 5:01 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 22 more | 59 min |
| Jun 19, 6:58 AM CDT | Mesoscale Discussion | SPC | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 8 more | 62 min |
| Jun 19, 12:37 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Benton, Black Hawk, Buchanan and 29 more | 83 min |
| Jun 19, 1:54 PM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clinton, Delaware, Des Moines, Dubuque and 12 more | 96 min |
| Jun 19, 5:37 PM CDT | Mesoscale Discussion | SPC | Clinton, Des Moines, Scott | 53 min |
| Jun 21, 12:56 AM CDT | Mesoscale Discussion | SPC | Adams, Cass, Fremont, Mills, Montgomery, Page and 1 more | 94 min |
| Jun 21, 12:33 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Buena Vista, Butler and 30 more | 87 min |
| Jun 21, 6:51 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 39 more | 84 min |
| Jun 21, 9:06 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Cedar and 13 more | 54 min |
| Jun 23, 7:24 AM CDT | Mesoscale Discussion | SPC | Plymouth | 96 min |
| Jun 23, 11:31 AM CDT | Mesoscale Discussion | SPC | Black Hawk, Boone, Bremer, Buena Vista, Butler, Calhoun and 38 more | 89 min |
| Jun 23, 3:21 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Benton, Cass, Cedar and 34 more | 54 min |
| Jun 23, 5:32 PM CDT | Mesoscale Discussion | SPC | Davis, Des Moines, Henry, Lee, Van Buren | 58 min |
| Jun 24, 7:34 AM CDT | Mesoscale Discussion | SPC | Boone, Butler, Cerro Gordo, Emmet, Franklin, Grundy and 13 more | 56 min |
| Jun 24, 3:36 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Decatur, Fremont, Montgomery and 4 more | 114 min |
| Jun 24, 10:53 PM CDT | Mesoscale Discussion | SPC | Plymouth, Sioux | 97 min |
| Jun 25, 3:32 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Clarke, Decatur and 14 more | 88 min |
| Jun 25, 12:14 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Cedar, Chickasaw and 17 more | 61 min |
| Jun 25, 2:56 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Buchanan, Cedar, Clinton, Delaware and 9 more | 64 min |
| Jun 25, 5:36 PM CDT | Mesoscale Discussion | SPC | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 12 more | 84 min |
| Jun 26, 11:46 PM CDT | Mesoscale Discussion | SPC | Lyon, Plymouth, Sioux | 59 min |
| Jun 27, 1:19 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Buchanan, Cedar, Clarke, Clayton and 30 more | 56 min |
| Jun 27, 6:22 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Lee, Van Buren | 113 min |
| Jul 6, 2:58 PM CDT | Mesoscale Discussion | SPC | Lyon, Osceola | 32 min |
| Jul 7, 1:47 PM CDT | Mesoscale Discussion | SPC | Boone, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 28 more | 58 min |
| Jul 7, 3:56 PM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 1 more | 34 min |
| Jul 7, 6:12 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 30 more | 63 min |
| Jul 7, 6:33 PM CDT | Mesoscale Discussion | SPC | Adair, Boone, Buena Vista, Calhoun, Carroll, Cerro Gordo and 36 more | 27 min |
| Jul 7, 9:22 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 38 more | 53 min |
| Jul 7, 11:36 PM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Carroll, Crawford, Dallas, Greene and 12 more | 54 min |
| Jul 8, 2:16 AM CDT | Mesoscale Discussion | SPC | Fremont, Page, Ringgold, Taylor | 59 min |
| Jul 9, 3:07 AM CDT | Mesoscale Discussion | SPC | Lyon, Plymouth, Sioux | 83 min |
| Jul 9, 5:56 AM CDT | Mesoscale Discussion | SPC | Cherokee, Crawford, Harrison, Ida, Monona, Plymouth and 2 more | 94 min |
| Jul 9, 11:54 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 16 more | 96 min |
| Jul 9, 2:57 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 18 more | 93 min |
| Jul 9, 6:34 PM CDT | Mesoscale Discussion | SPC | Lyon, Osceola, Plymouth, Sioux | 86 min |
| Jul 9, 11:31 PM CDT | Mesoscale Discussion | SPC | Allamakee, Audubon, Buena Vista, Calhoun, Carroll, Cerro Gordo and 33 more | 89 min |
| Jul 10, 1:36 AM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 26 more | 24 min |
| Jul 12, 7:34 AM CDT | Mesoscale Discussion | SPC | Monona, Plymouth, Sioux, Woodbury | 56 min |
| Jul 14, 1:42 PM CDT | Mesoscale Discussion | SPC | Cherokee, Clay, Dickinson, Emmet, Lyon, O'Brien and 3 more | 93 min |
| Jul 14, 6:33 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 20 more | 117 min |
| Jul 14, 10:19 PM CDT | Mesoscale Discussion | SPC | Audubon, Black Hawk, Boone, Bremer, Butler, Calhoun and 33 more | 56 min |
| Jul 15, 12:50 AM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Des Moines, Henry, Jefferson, Keokuk and 7 more | 85 min |
| Jul 21, 12:20 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Lyon and 5 more | 55 min |
| Jul 24, 9:51 AM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 11 more | 54 min |
| Jul 24, 2:24 PM CDT | Mesoscale Discussion | SPC | Adair, Benton, Black Hawk, Boone, Bremer, Butler and 35 more | 96 min |
| Jul 24, 3:52 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 14 more | 83 min |
| Jul 24, 6:38 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 28 more | 97 min |
| Jul 24, 7:20 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 12 more | 85 min |
| Jul 24, 9:22 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Davis, Des Moines, Henry, Iowa and 12 more | 53 min |
| Jul 27, 2:10 PM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Clayton, Howard, Mitchell, Winneshiek | 65 min |
| Jul 27, 6:45 PM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Howard, Mitchell, Winneshiek | 90 min |
| Jul 31, 7:43 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more | 2 hr |
| Aug 2, 8:32 PM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Emmet, Kossuth, Lyon, O'Brien and 4 more | 28 min |
| Aug 2, 11:21 PM CDT | Mesoscale Discussion | SPC | Allamakee, Buena Vista, Cerro Gordo, Cherokee, Chickasaw, Clay and 16 more | 84 min |
| Aug 3, 6:58 PM CDT | Mesoscale Discussion | SPC | Plymouth, Sioux | 2 hr |
| Aug 4, 7:11 AM CDT | Mesoscale Discussion | SPC | Davis, Des Moines, Henry, Jefferson, Lee, Louisa and 2 more | 94 min |
| Aug 7, 3:55 PM CDT | Mesoscale Discussion | SPC | Cherokee, Crawford, Harrison, Ida, Monona, Plymouth and 4 more | 95 min |
| Aug 7, 8:58 PM CDT | Mesoscale Discussion | SPC | Black Hawk, Boone, Bremer, Buchanan, Buena Vista, Butler and 35 more | 92 min |
| Aug 8, 1:29 AM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 37 more | 2 hr |
| Aug 8, 12:16 PM CDT | Mesoscale Discussion | SPC | Dickinson, Emmet, Lyon, Osceola | 29 min |
| Aug 8, 3:27 PM CDT | Mesoscale Discussion | SPC | Dickinson, Lyon, Osceola | 33 min |
| Aug 9, 5:01 AM CDT | Mesoscale Discussion | SPC | Harrison, Monona, Pottawattamie | 59 min |
| Aug 9, 6:30 AM CDT | Mesoscale Discussion | SPC | Audubon, Black Hawk, Boone, Bremer, Butler, Calhoun and 30 more | 2 hr |
| Aug 9, 9:55 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 68 more | 35 min |
| Aug 9, 11:16 AM CDT | Mesoscale Discussion | SPC | Harrison, Pottawattamie, Shelby | 29 min |
| Aug 9, 1:18 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page, Taylor | 27 min |
| Aug 9, 1:40 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 23 more | 35 min |
| Aug 9, 5:49 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Clarke, Davis, Decatur and 18 more | 86 min |
| Aug 9, 8:30 PM CDT | Mesoscale Discussion | SPC | Appanoose, Cedar, Clinton, Davis, Des Moines, Henry and 8 more | 90 min |
| Aug 12, 4:03 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 44 more | 87 min |
| Aug 17, 1:22 AM CDT | Mesoscale Discussion | SPC | Davis, Des Moines, Henry, Jefferson, Lee, Louisa and 3 more | 83 min |
| Aug 19, 11:51 AM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Des Moines, Henry, Lee, Louisa and 2 more | 114 min |
| Aug 19, 4:34 PM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Delaware, Dubuque, Jackson, Jones and 1 more | 56 min |
| Aug 19, 5:19 PM CDT | Mesoscale Discussion | SPC | Adams, Buena Vista, Cass, Cherokee, Crawford, Fremont and 14 more | 26 min |
| Aug 19, 7:45 PM CDT | Mesoscale Discussion | SPC | Allamakee, Buchanan, Cedar, Clayton, Clinton, Delaware and 10 more | 90 min |
| Aug 20, 1:51 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 20 more | 114 min |
| Sep 27, 5:32 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Des Moines, Jackson, Louisa, Muscatine and 1 more | 88 min |
| Sep 30, 11:44 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Carroll, Cass, Clarke and 18 more | 91 min |
| Oct 10, 5:56 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Clarke, Dallas and 23 more | 5 hr |
| Dec 8, 11:22 AM CST | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 73 more | 5 hr |
| Dec 8, 6:00 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Appanoose, Audubon, Benton and 73 more | 5 hr |
| Dec 8, 9:38 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Appanoose, Audubon, Benton and 78 more | 6 hr |
| Dec 9, 10:22 AM CST | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 61 more | 4 hr |
| Dec 23, 6:44 AM CST | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Cass, Cedar and 25 more | 4 hr |
| Dec 23, 12:21 PM CST | Mesoscale Discussion | SPC | Audubon, Benton, Black Hawk, Boone, Buchanan, Buena Vista and 26 more | 4 hr |
| Dec 23, 6:41 PM CST | Mesoscale Discussion | SPC | Clayton, Clinton, Dubuque, Jackson | 4 hr |
| Dec 24, 1:32 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Cass, Decatur, Fremont, Mills and 6 more | 4 hr |
| Dec 24, 11:54 PM CST | Mesoscale Discussion | SPC | Taylor | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Taylor County59
- Page County57
- Fremont County55
- Montgomery County55
- Adams County54
- Union County48
- Mills County47
- Ringgold County47
- Adair County45
- Cass County45
- Pottawattamie County43
- Story County43
- Madison County42
- Hamilton County41
- Webster County41
- Boone County41
- Greene County40
- Marshall County40
- Sac County39
- Dallas County39
- Decatur County39
- Guthrie County39
- Audubon County38
- Buena Vista County38
- Hardin County38
- Polk County38
- Chickasaw County37
- Lyon County37
- Shelby County37
- Sioux County37
- Buchanan County37
- Grundy County37
- Lucas County37
- Warren County37
- Calhoun County36
- Carroll County36
- Ida County36
- Cedar County36
- Clarke County36
- Johnson County36
59 more counties
- Linn County36
- Marion County36
- Monroe County36
- Tama County36
- Palo Alto County35
- Plymouth County35
- Wright County35
- Benton County35
- Jasper County35
- Jefferson County35
- Muscatine County35
- Wayne County35
- Bremer County34
- Floyd County34
- Cherokee County34
- Harrison County34
- Humboldt County34
- Pocahontas County34
- Black Hawk County34
- Cerro Gordo County34
- Davis County34
- Des Moines County34
- Franklin County34
- Wapello County34
- Fayette County33
- Clay County33
- Crawford County33
- Hancock County33
- Kossuth County33
- Monona County33
- O'Brien County33
- Woodbury County33
- Butler County33
- Delaware County33
- Iowa County33
- Mahaska County33
- Poweshiek County33
- Dickinson County32
- Osceola County32
- Appanoose County32
- Clinton County32
- Louisa County32
- Scott County32
- Clayton County31
- Emmet County31
- Dubuque County31
- Henry County31
- Jackson County31
- Keokuk County31
- Washington County31
- Winneshiek County30
- Jones County30
- Howard County28
- Mitchell County28
- Van Buren County28
- Winnebago County26
- Allamakee County25
- Worth County25
- Lee County24
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.