Alert archive / Illinois / Mesoscale Discussions
Mesoscale Discussions in Illinois, 2019
180 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
- 180
- Busiest month
- June42 mesoscale discussions
- Busiest day
- May 23, 20195 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 11, 2:00 PM CST | Mesoscale Discussion | SPC | Calhoun, Jersey, Madison | 6 hr |
| Jan 11, 6:15 PM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Clinton, Jefferson, Jersey, Macoupin and 7 more | 4 hr |
| Jan 11, 11:34 PM CST | Mesoscale Discussion | SPC | Calhoun, Greene, Jersey, Pike | 4 hr |
| Jan 18, 5:54 PM CST | Mesoscale Discussion | SPC | Carroll, Hancock, Henderson, Henry, Mercer, Rock Island and 2 more | 6 hr |
| Jan 18, 6:58 PM CST | Mesoscale Discussion | SPC | Boone, DeKalb, DuPage, Jo Daviess, Kane, Kendall and 5 more | 6 hr |
| Jan 19, 3:21 PM CST | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Crawford, Cumberland, Edwards and 21 more | 3 hr |
| Jan 19, 6:21 PM CST | Mesoscale Discussion | SPC | Edwards, Gallatin, Hamilton, Hardin, Johnson, Lawrence and 7 more | 3 hr |
| Jan 19, 11:13 PM CST | Mesoscale Discussion | SPC | Cook | 4 hr |
| Jan 22, 2:36 PM CST | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 25 more | 4 hr |
| Jan 28, 2:42 AM CST | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Kane and 10 more | 4 hr |
| Feb 5, 1:37 PM CST | Mesoscale Discussion | SPC | Bureau, Carroll, Henderson, Henry, Jo Daviess, Lee and 7 more | 5 hr |
| Feb 5, 5:56 PM CST | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 11 more | 6 hr |
| Feb 7, 6:26 AM CST | Mesoscale Discussion | SPC | Carroll, Henry, Jo Daviess, Mercer, Ogle, Rock Island and 3 more | 4 hr |
| Feb 7, 7:11 AM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 9 more | 64 min |
| Feb 7, 9:26 AM CST | Mesoscale Discussion | SPC | Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 7 more | 94 min |
| Feb 10, 1:15 AM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Hamilton, Jackson, Johnson, Massac and 10 more | 5 hr |
| Feb 10, 5:41 AM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clark, Clay, Clinton and 25 more | 4 hr |
| Feb 11, 7:21 PM CST | Mesoscale Discussion | SPC | Bureau, DeKalb, DuPage, Grundy, Kane, Kendall and 4 more | 6 hr |
| Feb 17, 12:46 AM CST | Mesoscale Discussion | SPC | Mercer | 4 hr |
| Mar 9, 9:45 AM CST | Mesoscale Discussion | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 2 more | 3 hr |
| Mar 9, 1:27 PM CST | Mesoscale Discussion | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski | 2 hr |
| Mar 9, 3:17 PM CST | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Christian, Clark, Clay and 39 more | 118 min |
| Mar 14, 9:31 AM CDT | Mesoscale Discussion | SPC | Edwards, Gallatin, Hardin, Massac, Pope, Saline and 2 more | 119 min |
| Mar 14, 10:54 AM CDT | Mesoscale Discussion | SPC | DeWitt, DuPage, Ford, Fulton, Grundy, Iroquois and 17 more | 96 min |
| Mar 24, 1:53 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clinton, Franklin, Jackson, Jefferson and 8 more | 3 hr |
| Mar 24, 3:42 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Greene, Hancock and 4 more | 93 min |
| Mar 24, 5:11 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clinton, Franklin, Jackson, Jefferson and 10 more | 2 hr |
| Mar 24, 8:01 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Clay, Clinton, Edwards and 19 more | 119 min |
| Mar 30, 1:54 PM CDT | Mesoscale Discussion | SPC | Hardin, Massac, Pope | 2 hr |
| Apr 7, 3:14 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clinton and 37 more | 3 hr |
| Apr 11, 3:13 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Fulton, Henry, Knox, Lee and 10 more | 62 min |
| Apr 14, 8:27 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Fulton, Knox, LaSalle and 8 more | 3 hr |
| Apr 17, 5:16 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Jo Daviess, Lee, Ogle, Stephenson and 2 more | 89 min |
| Apr 18, 2:16 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clay, Clinton, Cumberland and 15 more | 119 min |
| Apr 22, 2:42 PM CDT | Mesoscale Discussion | SPC | Carroll, Henry, Jo Daviess, Lee, Rock Island, Stephenson and 1 more | 2 hr |
| Apr 24, 2:51 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more | 54 min |
| Apr 25, 2:42 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 9 more | 2 hr |
| Apr 27, 11:32 AM CDT | Mesoscale Discussion | SPC | Boone, Jo Daviess, McHenry, Stephenson, Winnebago | 6 hr |
| Apr 30, 12:39 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clark, Clay, Clinton and 23 more | 2 hr |
| Apr 30, 4:35 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Champaign, Christian, Clark, Clay and 22 more | 55 min |
| Apr 30, 7:29 PM CDT | Mesoscale Discussion | SPC | Monroe, Randolph, Saint Clair | 61 min |
| Apr 30, 10:13 PM CDT | Mesoscale Discussion | SPC | Bond, Clinton, Fayette, Jackson, Madison, Marion and 5 more | 92 min |
| May 8, 1:11 PM CDT | Mesoscale Discussion | SPC | Adams, Hancock, Henderson, Henry, Knox, McDonough and 3 more | 94 min |
| May 16, 12:09 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, DeWitt, Douglas, Edgar and 16 more | 66 min |
| May 16, 2:47 PM CDT | Mesoscale Discussion | SPC | Champaign, Coles, DeWitt, Douglas, Edgar, Macon and 3 more | 118 min |
| May 16, 5:33 PM CDT | Mesoscale Discussion | SPC | Clark, Coles, Crawford, Douglas, Edgar, Lawrence | 117 min |
| May 16, 7:14 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, DeKalb, Ford, Grundy, Henry and 12 more | 2 hr |
| May 16, 11:12 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, DeKalb, Ford, Grundy, Henry and 14 more | 2 hr |
| May 18, 6:59 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Hancock, Henderson, McDonough, Schuyler and 1 more | 2 hr |
| May 18, 7:19 PM CDT | Mesoscale Discussion | SPC | Alexander, Calhoun, Jackson, Jersey, Madison, Monroe and 5 more | 116 min |
| May 19, 2:06 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Clay, Clinton, Coles, Crawford and 22 more | 114 min |
| May 21, 12:55 AM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Monroe, Randolph, Saint Clair, Union | 95 min |
| May 21, 5:43 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Clinton, Greene, Jackson and 12 more | 62 min |
| May 21, 7:37 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Christian, Clark, Clay and 39 more | 83 min |
| May 21, 11:26 PM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Cumberland, Edwards, Gallatin, Hamilton and 11 more | 94 min |
| May 22, 5:59 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Calhoun, Cass, Fulton and 20 more | 2 hr |
| May 22, 8:12 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 14 more | 63 min |
| May 22, 9:43 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Bureau, Calhoun, Cass and 37 more | 92 min |
| May 23, 1:23 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clinton and 37 more | 97 min |
| May 23, 3:50 AM CDT | Mesoscale Discussion | SPC | Clark, Edgar | 55 min |
| May 23, 2:39 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 12 more | 96 min |
| May 24, 12:15 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Champaign, Christian, Coles and 28 more | 90 min |
| May 24, 3:25 PM CDT | Mesoscale Discussion | SPC | Carroll, Henderson, Henry, Jo Daviess, Knox, Mercer and 5 more | 65 min |
| May 24, 8:57 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, DeKalb, DeWitt, Fulton, Hancock and 25 more | 2 hr |
| May 25, 3:24 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Fulton, Greene and 9 more | 3 hr |
| May 25, 6:48 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 11 more | 57 min |
| May 26, 12:24 AM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Douglas, Edgar, Ford, Iroquois and 6 more | 66 min |
| May 27, 12:50 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Champaign, Cook, DeKalb and 36 more | 85 min |
| May 27, 3:57 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Champaign, Cook, DeKalb, DeWitt and 37 more | 93 min |
| May 27, 5:30 PM CDT | Mesoscale Discussion | SPC | Ford, Iroquois, Kankakee | 90 min |
| May 28, 1:23 AM CDT | Mesoscale Discussion | SPC | Hancock, Henderson, McDonough | 2 hr |
| May 28, 11:16 AM CDT | Mesoscale Discussion | SPC | Champaign, Ford, Iroquois, Kankakee, Livingston, Piatt and 1 more | 119 min |
| May 28, 11:31 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, DeWitt, Fulton and 17 more | 89 min |
| May 28, 3:58 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Champaign, Christian, DeWitt and 19 more | 62 min |
| May 29, 9:06 AM CDT | Mesoscale Discussion | SPC | Hardin, Massac, Pope | 114 min |
| May 29, 3:48 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Christian, Clark, Clay and 33 more | 87 min |
| May 29, 6:17 PM CDT | Mesoscale Discussion | SPC | Mercer, Rock Island | 118 min |
| May 30, 3:28 PM CDT | Mesoscale Discussion | SPC | Iroquois | 2 hr |
| Jun 1, 2:05 PM CDT | Mesoscale Discussion | SPC | Boone, Lake, McHenry, Stephenson, Winnebago | 115 min |
| Jun 1, 3:02 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 15 more | 118 min |
| Jun 1, 5:21 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Grundy and 14 more | 54 min |
| Jun 1, 6:07 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 13 more | 83 min |
| Jun 1, 7:18 PM CDT | Mesoscale Discussion | SPC | Calhoun, Jersey, Monroe | 57 min |
| Jun 4, 4:57 PM CDT | Mesoscale Discussion | SPC | Monroe, Randolph, Saint Clair | 93 min |
| Jun 5, 10:03 AM CDT | Mesoscale Discussion | SPC | Fulton, Hancock, Henderson, Knox, McDonough, Mercer and 3 more | 117 min |
| Jun 5, 12:44 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 34 more | 2 hr |
| Jun 5, 2:44 PM CDT | Mesoscale Discussion | SPC | Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson and 10 more | 2 hr |
| Jun 5, 6:01 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clinton, Jersey, Madison, Monroe and 2 more | 89 min |
| Jun 5, 7:44 PM CDT | Mesoscale Discussion | SPC | Clinton, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 91 min |
| Jun 15, 12:57 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Crawford, Edwards, Franklin, Gallatin and 19 more | 3 hr |
| Jun 15, 3:50 PM CDT | Mesoscale Discussion | SPC | Mercer, Rock Island | 115 min |
| Jun 15, 5:47 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Fulton, Hancock, Henderson, Henry and 9 more | 88 min |
| Jun 15, 9:48 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Cass, Fulton, Hancock and 18 more | 57 min |
| Jun 16, 1:14 AM CDT | Mesoscale Discussion | SPC | Bond, Clark, Clay, Coles, Crawford, Cumberland and 7 more | 61 min |
| Jun 16, 1:46 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 11 more | 59 min |
| Jun 16, 3:42 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Edwards, Franklin, Gallatin, Hamilton and 19 more | 93 min |
| Jun 19, 11:34 AM CDT | Mesoscale Discussion | SPC | Cass, Champaign, Christian, Clark, Coles, Crawford and 23 more | 116 min |
| Jun 19, 12:35 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hardin, Johnson, Massac and 5 more | 115 min |
| Jun 19, 4:28 PM CDT | Mesoscale Discussion | SPC | Alexander, Hardin, Jackson, Johnson, Massac, Pope and 2 more | 2 hr |
| Jun 19, 7:10 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Cass, Christian, Clay, Clinton and 32 more | 2 hr |
| Jun 21, 10:50 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Christian, Clinton, Greene and 12 more | 85 min |
| Jun 21, 2:46 PM CDT | Mesoscale Discussion | SPC | Alexander, Hardin, Massac, Pope, Pulaski | 89 min |
| Jun 21, 5:14 PM CDT | Mesoscale Discussion | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski | 91 min |
| Jun 21, 11:33 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Fulton, Greene and 10 more | 87 min |
| Jun 22, 1:55 PM CDT | Mesoscale Discussion | SPC | Massac | 95 min |
| Jun 23, 12:31 PM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Cumberland, Edgar, Jasper, Lawrence and 2 more | 89 min |
| Jun 23, 3:41 PM CDT | Mesoscale Discussion | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 64 min |
| Jun 24, 12:35 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, Jo Daviess, Kane, Lee and 6 more | 85 min |
| Jun 25, 1:10 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more | 2 hr |
| Jun 25, 6:36 PM CDT | Mesoscale Discussion | SPC | Cook, DuPage, Kendall | 54 min |
| Jun 25, 9:18 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Champaign, Christian, Coles and 17 more | 117 min |
| Jun 26, 1:06 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Cass, Christian, Clay and 35 more | 114 min |
| Jun 27, 1:55 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Stephenson | 95 min |
| Jun 27, 3:27 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, Jo Daviess, Kane, Kendall and 6 more | 93 min |
| Jun 27, 6:17 PM CDT | Mesoscale Discussion | SPC | Cook, DeKalb, DuPage, Grundy, Kane, Kankakee and 6 more | 118 min |
| Jun 28, 2:04 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Hancock, McDonough, Pike | 86 min |
| Jun 30, 1:38 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Ford and 22 more | 2 hr |
| Jun 30, 2:52 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Douglas, Edgar, Ford and 3 more | 113 min |
| Jun 30, 5:20 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside | 115 min |
| Jun 30, 5:47 PM CDT | Mesoscale Discussion | SPC | Christian, Clark, Clay, Coles, Crawford, Cumberland and 19 more | 118 min |
| Jun 30, 7:56 PM CDT | Mesoscale Discussion | SPC | Fulton, Hancock, Henderson, Knox, McDonough, Marshall and 4 more | 2 hr |
| Jun 30, 8:20 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hamilton, Hardin, Pope, Saline, White | 115 min |
| Jul 2, 2:31 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 23 more | 89 min |
| Jul 3, 4:47 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Bureau, Calhoun, Cass and 64 more | 2 hr |
| Jul 6, 2:14 PM CDT | Mesoscale Discussion | SPC | Bureau, Champaign, DeWitt, Douglas, Edgar, Ford and 19 more | 3 hr |
| Jul 9, 5:30 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 2 hr |
| Jul 16, 1:34 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin | 2 hr |
| Jul 17, 12:59 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Hancock, Henderson, Knox, McDonough and 5 more | 2 hr |
| Jul 17, 3:58 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 17 more | 92 min |
| Jul 17, 6:17 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Fayette, Franklin and 22 more | 88 min |
| Jul 20, 1:59 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, Jo Daviess, Kane, Lee and 4 more | 2 hr |
| Jul 20, 4:58 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Kane, Lake and 2 more | 62 min |
| Jul 20, 6:54 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Hancock, Henderson, McDonough, Mercer and 3 more | 66 min |
| Jul 21, 12:56 PM CDT | Mesoscale Discussion | SPC | Champaign, Coles, Douglas, Edgar, Ford, Iroquois and 1 more | 2 hr |
| Aug 6, 1:08 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Clay, Clinton, Edwards and 26 more | 2 hr |
| Aug 6, 3:47 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Crawford, Edwards and 28 more | 118 min |
| Aug 6, 5:43 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hardin, Johnson, Massac, Pope and 3 more | 92 min |
| Aug 12, 3:46 PM CDT | Mesoscale Discussion | SPC | Brown, Bureau, Carroll, Cass, Fulton, Hancock and 21 more | 89 min |
| Aug 12, 10:00 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clark, Clay, Clinton and 31 more | 2 hr |
| Aug 12, 11:45 PM CDT | Mesoscale Discussion | SPC | Clark, Clay, Crawford, Edwards, Effingham, Jasper and 4 more | 2 hr |
| Aug 16, 4:32 PM CDT | Mesoscale Discussion | SPC | Cook, DuPage, Kane, Kendall, Lake, McHenry and 1 more | 2 hr |
| Aug 17, 8:00 AM CDT | Mesoscale Discussion | SPC | Bond, Bureau, Champaign, Christian, Clark, Coles and 42 more | 2 hr |
| Aug 18, 5:44 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 21 more | 91 min |
| Aug 18, 7:40 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 18 more | 2 hr |
| Aug 18, 12:35 PM CDT | Mesoscale Discussion | SPC | Clark, Clay, Clinton, Coles, Crawford, Cumberland and 23 more | 115 min |
| Aug 18, 3:29 PM CDT | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Crawford, Edwards, Franklin and 18 more | 91 min |
| Aug 19, 7:07 PM CDT | Mesoscale Discussion | SPC | Bond, Clark, Clay, Clinton, Coles, Crawford and 21 more | 83 min |
| Aug 20, 5:43 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Carroll, Cass, DeKalb and 27 more | 92 min |
| Aug 20, 9:04 AM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Bureau, Calhoun, Carroll and 78 more | 86 min |
| Aug 20, 12:12 PM CDT | Mesoscale Discussion | SPC | Clark, Clay, Clinton, Crawford, Cumberland, Edgar and 17 more | 2 hr |
| Aug 26, 2:06 AM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Jersey, Scott | 114 min |
| Aug 26, 2:24 PM CDT | Mesoscale Discussion | SPC | Monroe | 66 min |
| Aug 26, 4:29 PM CDT | Mesoscale Discussion | SPC | Clark, Coles, Crawford, Cumberland, Douglas, Edgar and 3 more | 61 min |
| Aug 26, 5:48 PM CDT | Mesoscale Discussion | SPC | Alexander, Johnson, Massac, Pulaski, Union | 57 min |
| Aug 29, 10:55 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Fulton, Hancock, Henderson, McDonough and 1 more | 95 min |
| Aug 30, 2:26 PM CDT | Mesoscale Discussion | SPC | Monroe | 2 hr |
| Aug 30, 5:15 PM CDT | Mesoscale Discussion | SPC | Bond, Clinton, Madison, Monroe, Saint Clair, Washington | 90 min |
| Sep 2, 6:37 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Stephenson | 83 min |
| Sep 3, 3:54 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Champaign, Coles, DeKalb, DeWitt and 30 more | 2 hr |
| Sep 11, 12:48 PM CDT | Mesoscale Discussion | SPC | Boone, Lake, McHenry, Stephenson, Winnebago | 117 min |
| Sep 11, 3:33 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 6 more | 117 min |
| Sep 12, 1:12 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 2 hr |
| Sep 12, 1:27 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 9 more | 93 min |
| Sep 12, 6:04 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 23 more | 116 min |
| Sep 12, 10:58 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 18 more | 2 hr |
| Sep 27, 3:01 PM CDT | Mesoscale Discussion | SPC | Bureau, Cass, Fulton, Hancock, Henderson, Henry and 18 more | 119 min |
| Sep 27, 6:21 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Cass, DeKalb, DeWitt and 30 more | 114 min |
| Sep 27, 9:18 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, DeWitt, Ford, Fulton and 18 more | 117 min |
| Sep 27, 10:45 PM CDT | Mesoscale Discussion | SPC | Brown, Cass, DeWitt, Ford, Iroquois, Livingston and 9 more | 30 min |
| Sep 29, 5:51 PM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Douglas, Edgar, Piatt, Vermilion | 54 min |
| Oct 1, 10:18 AM CDT | Mesoscale Discussion | SPC | Boone, McHenry, Winnebago | 2 hr |
| Oct 1, 5:03 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 8 more | 117 min |
| Oct 1, 8:54 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Jo Daviess, Ogle, Stephenson, Winnebago | 96 min |
| Oct 21, 1:54 AM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Jackson, Johnson, Massac, Perry and 6 more | 2 hr |
| Oct 26, 4:48 PM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Edgar, Lawrence, Wabash | 87 min |
| Nov 26, 9:32 PM CST | Mesoscale Discussion | SPC | Pike | 118 min |
| Nov 26, 11:32 PM CST | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Cumberland, DeWitt, Douglas and 14 more | 118 min |
| Dec 15, 10:05 AM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Clay, Clinton, Effingham, Fayette and 12 more | 4 hr |
| Dec 15, 2:11 PM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 34 more | 4 hr |
| Dec 16, 10:36 AM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clark, Clay, Clinton and 32 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Madison County38
- Monroe County38
- Saint Clair County38
- Washington County38
- Marion County37
- Calhoun County36
- Bond County36
- Clinton County35
- Alexander County35
- Hamilton County35
- Mason County35
- Jefferson County34
- Hancock County34
- Henderson County34
- Whiteside County34
- Lee County34
- Putnam County34
- Perry County33
- Randolph County33
- Carroll County33
- Mercer County33
- Warren County33
- Union County33
- White County33
- McDonough County33
- Marshall County33
- Schuyler County33
- Pike County32
- Henry County32
- Ogle County32
- Stephenson County32
- Clark County32
- Franklin County32
- Johnson County32
- Pope County32
- Peoria County32
- Stark County32
- Coles County32
- Menard County32
- Jersey County31
62 more counties
- Rock Island County31
- DeKalb County31
- Clay County31
- Edwards County31
- Hardin County31
- Jackson County31
- Massac County31
- Pulaski County31
- Saline County31
- Bureau County31
- Knox County31
- LaSalle County31
- Fulton County31
- Tazewell County31
- Cass County31
- Greene County30
- Jasper County30
- Wabash County30
- Williamson County30
- Woodford County30
- Brown County30
- Kendall County29
- Winnebago County29
- Cumberland County29
- Wayne County29
- Effingham County29
- Fayette County29
- Adams County29
- Edgar County29
- Crawford County28
- Montgomery County28
- Douglas County28
- Macoupin County27
- Boone County27
- Kane County27
- McHenry County27
- Lawrence County27
- Richland County27
- Livingston County27
- Christian County27
- Scott County27
- Shelby County27
- Ford County27
- Logan County27
- DuPage County26
- Gallatin County26
- Moultrie County26
- DeWitt County26
- McLean County26
- Jo Daviess County25
- Grundy County25
- Will County25
- Macon County25
- Morgan County25
- Champaign County25
- Iroquois County24
- Sangamon County24
- Piatt County22
- Vermilion County22
- Lake County19
- Cook County18
- Kankakee County18
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.