Alert archive / Illinois / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Illinois, 1997
378 severe thunderstorm warnings in 1997. 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in 1997. Tap one for its archive.
- Severe Thunderstorm Warnings
- 378
- Busiest month
- July86 severe thunderstorm warnings
- Busiest day
- March 28, 199731 severe thunderstorm warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 4, 5:48 PM CST | Severe Thunderstorm Warning | PAH | Union | 42 min |
| Jan 22, 10:57 AM CST | Severe Thunderstorm Warning | PAH | Pope | 33 min |
| Feb 28, 4:40 PM CST | Severe Thunderstorm Warning | PAH | Pulaski | 35 min |
| Mar 1, 5:52 PM CST | Severe Thunderstorm Warning | PAH | Johnson, Massac, Pulaski | 28 min |
| Mar 28, 2:02 PM CST | Severe Thunderstorm Warning | LSX | Bond, Madison | 43 min |
| Mar 28, 2:08 PM CST | Severe Thunderstorm Warning | LSX | Greene | 52 min |
| Mar 28, 2:27 PM CST | Severe Thunderstorm Warning | LSX | Randolph | 48 min |
| Mar 28, 2:45 PM CST | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 45 min |
| Mar 28, 2:52 PM CST | Severe Thunderstorm Warning | LSX | Saint Clair, Washington | 53 min |
| Mar 28, 2:54 PM CST | Severe Thunderstorm Warning | ILX | Menard | 36 min |
| Mar 28, 3:12 PM CST | Severe Thunderstorm Warning | PAH | Perry | 33 min |
| Mar 28, 3:18 PM CST | Severe Thunderstorm Warning | ILX | Logan, Sangamon | 57 min |
| Mar 28, 3:20 PM CST | Severe Thunderstorm Warning | LSX | Washington | 40 min |
| Mar 28, 3:27 PM CST | Severe Thunderstorm Warning | LSX | Macoupin | 48 min |
| Mar 28, 3:37 PM CST | Severe Thunderstorm Warning | PAH | Jefferson | 38 min |
| Mar 28, 3:51 PM CST | Severe Thunderstorm Warning | PAH | Perry | 39 min |
| Mar 28, 3:54 PM CST | Severe Thunderstorm Warning | ILX | Christian | 36 min |
| Mar 28, 4:00 PM CST | Severe Thunderstorm Warning | ILX | McLean | 60 min |
| Mar 28, 4:02 PM CST | Severe Thunderstorm Warning | LSX | Clinton, Marion | 43 min |
| Mar 28, 4:06 PM CST | Severe Thunderstorm Warning | ILX | Macon | 54 min |
| Mar 28, 4:09 PM CST | Severe Thunderstorm Warning | PAH | Jackson | 36 min |
| Mar 28, 4:15 PM CST | Severe Thunderstorm Warning | LSX | Fayette | 45 min |
| Mar 28, 4:18 PM CST | Severe Thunderstorm Warning | PAH | Jefferson | 27 min |
| Mar 28, 4:27 PM CST | Severe Thunderstorm Warning | ILX | DeWitt | 48 min |
| Mar 28, 4:37 PM CST | Severe Thunderstorm Warning | ILX | Effingham | 53 min |
| Mar 28, 4:37 PM CST | Severe Thunderstorm Warning | PAH | Hamilton, Wayne | 53 min |
| Mar 28, 4:49 PM CST | Severe Thunderstorm Warning | ILX | Champaign, Piatt | 56 min |
| Mar 28, 4:54 PM CST | Severe Thunderstorm Warning | PAH | Jackson, Williamson | 51 min |
| Mar 28, 5:00 PM CST | Severe Thunderstorm Warning | ILX | Shelby | 30 min |
| Mar 28, 5:06 PM CST | Severe Thunderstorm Warning | PAH | Pulaski | 24 min |
| Mar 28, 5:18 PM CST | Severe Thunderstorm Warning | PAH | Edwards, Wabash | 57 min |
| Mar 28, 5:21 PM CST | Severe Thunderstorm Warning | PAH | Johnson | 54 min |
| Mar 28, 5:24 PM CST | Severe Thunderstorm Warning | PAH | Saline | 51 min |
| Mar 28, 5:31 PM CST | Severe Thunderstorm Warning | PAH | White | 59 min |
| Mar 28, 5:35 PM CST | Severe Thunderstorm Warning | ILX | DeWitt | 40 min |
| Mar 28, 6:14 PM CST | Severe Thunderstorm Warning | PAH | Gallatin, Saline | 46 min |
| Apr 5, 2:03 PM CST | Severe Thunderstorm Warning | DVN | Henderson | 47 min |
| Apr 5, 2:23 PM CST | Severe Thunderstorm Warning | DVN | Mercer, Warren | 42 min |
| Apr 5, 2:30 PM CST | Severe Thunderstorm Warning | ILX | Fulton, Knox | 30 min |
| Apr 5, 2:46 PM CST | Severe Thunderstorm Warning | ILX | Mason, Menard, Sangamon | 29 min |
| Apr 5, 2:56 PM CST | Severe Thunderstorm Warning | DVN | Rock Island | 44 min |
| Apr 5, 3:00 PM CST | Severe Thunderstorm Warning | ILX | Logan, Peoria, Tazewell | 45 min |
| Apr 5, 3:00 PM CST | Severe Thunderstorm Warning | ILX | Stark | 45 min |
| Apr 5, 3:16 PM CST | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 29 min |
| Apr 5, 3:28 PM CST | Severe Thunderstorm Warning | DVN | Henry, Whiteside | 47 min |
| Apr 5, 3:36 PM CST | Severe Thunderstorm Warning | ILX | McLean, Woodford | 39 min |
| Apr 5, 3:36 PM CST | Severe Thunderstorm Warning | ILX | Marshall | 39 min |
| Apr 5, 3:41 PM CST | Severe Thunderstorm Warning | ILX | DeWitt, Macon | 34 min |
| Apr 5, 3:45 PM CST | Severe Thunderstorm Warning | LOT | LaSalle, Lee, Livingston | 45 min |
| Apr 5, 3:45 PM CST | Severe Thunderstorm Warning | LOT | Ogle | 45 min |
| Apr 5, 3:48 PM CST | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess | 42 min |
| Apr 5, 3:53 PM CST | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 47 min |
| Apr 5, 4:11 PM CST | Severe Thunderstorm Warning | ILX | DeWitt, Macon, Piatt | 34 min |
| Apr 5, 4:11 PM CST | Severe Thunderstorm Warning | ILX | McLean | 34 min |
| Apr 5, 4:15 PM CST | Severe Thunderstorm Warning | DVN | Stephenson | 45 min |
| Apr 5, 4:26 PM CST | Severe Thunderstorm Warning | LOT | DeKalb, Grundy, Kendall, LaSalle | 34 min |
| Apr 5, 4:26 PM CST | Severe Thunderstorm Warning | LOT | Ford, Livingston | 34 min |
| Apr 5, 4:26 PM CST | Severe Thunderstorm Warning | LOT | Lee | 34 min |
| Apr 5, 4:33 PM CST | Severe Thunderstorm Warning | ILX | Champaign | 57 min |
| Apr 5, 4:59 PM CST | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee | 31 min |
| Apr 5, 4:59 PM CST | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Kane, Kendall, McHenry | 31 min |
| Apr 5, 4:59 PM CST | Severe Thunderstorm Warning | LOT | Grundy, Will | 31 min |
| Apr 5, 4:59 PM CST | Severe Thunderstorm Warning | LOT | DuPage | 31 min |
| Apr 5, 5:26 PM CST | Severe Thunderstorm Warning | LOT | Cook, Lake, McHenry | 34 min |
| Apr 5, 5:26 PM CST | Severe Thunderstorm Warning | LOT | DuPage, Kankakee, Will | 34 min |
| Apr 5, 5:26 PM CST | Severe Thunderstorm Warning | LOT | Iroquois | 34 min |
| Apr 18, 8:51 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 39 min |
| Apr 18, 8:58 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 47 min |
| Apr 18, 9:30 PM CDT | Severe Thunderstorm Warning | ILX | Scott | 30 min |
| Apr 18, 9:45 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 45 min |
| Apr 18, 9:59 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Warren | 46 min |
| Apr 18, 10:20 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 40 min |
| Apr 18, 11:17 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin, Madison | 43 min |
| Apr 18, 11:56 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Madison | 49 min |
| Apr 19, 12:34 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair, Washington | 41 min |
| Apr 20, 11:20 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Pulaski, Union | 40 min |
| Apr 20, 11:20 PM CDT | Severe Thunderstorm Warning | PAH | Johnson | 40 min |
| Apr 20, 11:37 PM CDT | Severe Thunderstorm Warning | PAH | Hardin, Massac, Pope | 33 min |
| Apr 30, 1:31 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 29 min |
| Apr 30, 1:36 PM CDT | Severe Thunderstorm Warning | DVN | Hancock | 34 min |
| Apr 30, 2:23 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 52 min |
| Apr 30, 2:25 PM CDT | Severe Thunderstorm Warning | LOT | Lee | 35 min |
| Apr 30, 2:28 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 47 min |
| Apr 30, 2:47 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 43 min |
| Apr 30, 2:51 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 54 min |
| Apr 30, 2:58 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 47 min |
| Apr 30, 3:05 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 40 min |
| Apr 30, 3:12 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb | 48 min |
| Apr 30, 3:29 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 46 min |
| Apr 30, 3:43 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 32 min |
| Apr 30, 4:19 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson, Wayne | 41 min |
| Apr 30, 4:29 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Livingston | 31 min |
| Apr 30, 4:30 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland | 30 min |
| Apr 30, 4:40 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Edgar | 50 min |
| Apr 30, 5:36 PM CDT | Severe Thunderstorm Warning | ILX | Lawrence, Richland | 29 min |
| Apr 30, 7:02 PM CDT | Severe Thunderstorm Warning | PAH | Gallatin | 43 min |
| May 2, 1:27 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 33 min |
| May 2, 1:37 PM CDT | Severe Thunderstorm Warning | PAH | Perry | 38 min |
| May 2, 9:11 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Pulaski | 49 min |
| May 2, 9:44 PM CDT | Severe Thunderstorm Warning | PAH | Massac | 46 min |
| May 2, 10:06 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Piatt | 24 min |
| May 2, 11:36 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey | 54 min |
| May 5, 2:02 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Will | 43 min |
| May 5, 2:10 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 50 min |
| May 5, 2:24 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 51 min |
| May 5, 4:34 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 26 min |
| May 18, 5:10 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 50 min |
| May 18, 5:40 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Whiteside | 50 min |
| May 18, 5:51 PM CDT | Severe Thunderstorm Warning | LOT | Ogle | 69 min |
| May 18, 6:30 PM CDT | Severe Thunderstorm Warning | LOT | Boone | 45 min |
| May 18, 6:41 PM CDT | Severe Thunderstorm Warning | LOT | Lee | 64 min |
| May 18, 6:56 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 64 min |
| May 18, 7:09 PM CDT | Severe Thunderstorm Warning | LOT | Kane | 66 min |
| May 18, 7:10 PM CDT | Severe Thunderstorm Warning | DVN | Bureau | 50 min |
| May 18, 7:19 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Lee | 56 min |
| May 18, 7:42 PM CDT | Severe Thunderstorm Warning | LOT | Kendall, LaSalle | 63 min |
| May 18, 8:03 PM CDT | Severe Thunderstorm Warning | DVN | Henderson | 52 min |
| May 18, 8:26 PM CDT | Severe Thunderstorm Warning | DVN | Warren | 49 min |
| May 18, 8:33 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 47 min |
| May 18, 8:38 PM CDT | Severe Thunderstorm Warning | DVN | Bureau | 47 min |
| May 18, 8:50 PM CDT | Severe Thunderstorm Warning | DVN | Henderson | 45 min |
| May 18, 8:52 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee | 2 hr |
| May 18, 8:52 PM CDT | Severe Thunderstorm Warning | LOT | Livingston | 2 hr |
| May 18, 8:59 PM CDT | Severe Thunderstorm Warning | DVN | Mercer | 36 min |
| May 18, 9:54 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Livingston | 66 min |
| May 18, 10:17 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 43 min |
| May 18, 10:50 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois, Kankakee | 55 min |
| May 18, 11:05 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 40 min |
| May 18, 11:12 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 63 min |
| May 19, 12:29 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 31 min |
| May 24, 4:45 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 45 min |
| May 25, 9:07 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 38 min |
| May 25, 9:39 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 66 min |
| May 25, 10:01 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Perry | 44 min |
| May 25, 10:49 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Union, Williamson | 41 min |
| May 25, 11:27 PM CDT | Severe Thunderstorm Warning | PAH | Johnson | 48 min |
| May 26, 3:53 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 52 min |
| May 30, 6:03 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Union | 42 min |
| Jun 6, 12:09 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 51 min |
| Jun 6, 2:57 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Edgar | 48 min |
| Jun 6, 3:20 PM CDT | Severe Thunderstorm Warning | ILX | Jasper | 55 min |
| Jun 6, 3:29 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 61 min |
| Jun 6, 3:39 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Richland | 51 min |
| Jun 6, 6:46 PM CDT | Severe Thunderstorm Warning | PAH | Franklin | 44 min |
| Jun 6, 6:53 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 52 min |
| Jun 6, 7:12 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 48 min |
| Jun 6, 8:15 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 30 min |
| Jun 6, 8:50 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 25 min |
| Jun 7, 8:20 PM CDT | Severe Thunderstorm Warning | DVN | McDonough | 30 min |
| Jun 7, 9:11 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 64 min |
| Jun 12, 12:56 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 49 min |
| Jun 12, 1:35 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason | 40 min |
| Jun 12, 1:43 PM CDT | Severe Thunderstorm Warning | ILX | McLean, Tazewell | 47 min |
| Jun 12, 2:25 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 50 min |
| Jun 12, 2:46 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt | 44 min |
| Jun 13, 11:44 AM CDT | Severe Thunderstorm Warning | PAH | Johnson, Williamson | 46 min |
| Jun 13, 12:02 PM CDT | Severe Thunderstorm Warning | PAH | Pope | 28 min |
| Jun 13, 8:07 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 38 min |
| Jun 13, 8:17 PM CDT | Severe Thunderstorm Warning | PAH | Alexander | 43 min |
| Jun 13, 8:20 PM CDT | Severe Thunderstorm Warning | PAH | Union | 40 min |
| Jun 13, 8:34 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Pulaski | 41 min |
| Jun 13, 8:34 PM CDT | Severe Thunderstorm Warning | PAH | Williamson | 41 min |
| Jun 13, 8:58 PM CDT | Severe Thunderstorm Warning | PAH | Massac | 47 min |
| Jun 15, 9:50 PM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry | 55 min |
| Jun 15, 9:50 PM CDT | Severe Thunderstorm Warning | LOT | Winnebago | 55 min |
| Jun 15, 10:17 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess | 63 min |
| Jun 15, 10:18 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 27 min |
| Jun 20, 6:07 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 63 min |
| Jun 20, 7:32 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Winnebago | 58 min |
| Jun 20, 7:48 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 57 min |
| Jun 20, 8:54 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 51 min |
| Jun 21, 5:00 AM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 60 min |
| Jun 21, 5:17 AM CDT | Severe Thunderstorm Warning | DVN | Henderson | 33 min |
| Jun 21, 5:34 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Whiteside | 56 min |
| Jun 21, 5:34 AM CDT | Severe Thunderstorm Warning | DVN | Warren | 56 min |
| Jun 21, 5:34 AM CDT | Severe Thunderstorm Warning | DVN | Carroll | 56 min |
| Jun 21, 5:57 AM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 48 min |
| Jun 21, 6:16 AM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle | 59 min |
| Jun 21, 6:19 AM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 46 min |
| Jun 21, 6:49 AM CDT | Severe Thunderstorm Warning | LOT | Winnebago | 41 min |
| Jun 21, 4:39 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 51 min |
| Jun 21, 5:18 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 57 min |
| Jun 21, 5:23 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Edgar | 37 min |
| Jun 21, 5:32 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 43 min |
| Jun 21, 5:33 PM CDT | Severe Thunderstorm Warning | ILX | Cumberland | 42 min |
| Jun 21, 5:44 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion | 46 min |
| Jun 21, 6:01 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Edgar | 59 min |
| Jun 21, 6:08 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 52 min |
| Jun 21, 6:13 PM CDT | Severe Thunderstorm Warning | ILX | Effingham, Jasper | 47 min |
| Jun 21, 6:31 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 44 min |
| Jun 21, 6:44 PM CDT | Severe Thunderstorm Warning | PAH | Wayne | 31 min |
| Jun 21, 6:52 PM CDT | Severe Thunderstorm Warning | PAH | Edwards | 38 min |
| Jun 21, 7:00 PM CDT | Severe Thunderstorm Warning | ILX | Richland | 60 min |
| Jun 21, 7:02 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson | 43 min |
| Jun 21, 7:09 PM CDT | Severe Thunderstorm Warning | PAH | Wabash | 51 min |
| Jun 21, 7:42 PM CDT | Severe Thunderstorm Warning | PAH | Wayne | 48 min |
| Jun 24, 6:00 PM CDT | Severe Thunderstorm Warning | LOT | McHenry | 45 min |
| Jun 24, 6:27 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 48 min |
| Jun 24, 11:39 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 61 min |
| Jun 25, 1:40 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Livingston | 35 min |
| Jun 25, 2:04 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 26 min |
| Jun 25, 2:33 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 42 min |
| Jun 25, 2:39 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 51 min |
| Jun 25, 2:56 PM CDT | Severe Thunderstorm Warning | ILX | Logan | 34 min |
| Jun 25, 3:23 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt | 37 min |
| Jun 25, 4:42 PM CDT | Severe Thunderstorm Warning | ILX | Macon | 33 min |
| Jun 25, 5:28 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 47 min |
| Jun 25, 7:15 PM CDT | Severe Thunderstorm Warning | ILX | Richland | 30 min |
| Jun 25, 7:33 PM CDT | Severe Thunderstorm Warning | ILX | Crawford | 27 min |
| Jun 25, 7:41 PM CDT | Severe Thunderstorm Warning | ILX | Jasper | 34 min |
| Jun 25, 8:27 PM CDT | Severe Thunderstorm Warning | ILX | Crawford | 33 min |
| Jun 27, 4:03 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 42 min |
| Jul 4, 1:46 AM CDT | Severe Thunderstorm Warning | PAH | Alexander | 59 min |
| Jul 6, 5:59 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 46 min |
| Jul 6, 7:43 PM CDT | Severe Thunderstorm Warning | ILX | Logan | 62 min |
| Jul 8, 7:23 PM CDT | Severe Thunderstorm Warning | PAH | Pulaski | 37 min |
| Jul 8, 7:47 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 28 min |
| Jul 8, 8:05 PM CDT | Severe Thunderstorm Warning | PAH | Alexander | 40 min |
| Jul 8, 8:15 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 45 min |
| Jul 14, 1:34 PM CDT | Severe Thunderstorm Warning | ILX | Macon | 26 min |
| Jul 14, 1:40 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 35 min |
| Jul 14, 1:52 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois | 68 min |
| Jul 14, 1:53 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Piatt | 37 min |
| Jul 14, 2:24 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 51 min |
| Jul 14, 2:31 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 44 min |
| Jul 14, 2:47 PM CDT | Severe Thunderstorm Warning | ILX | Douglas | 43 min |
| Jul 14, 2:55 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 50 min |
| Jul 14, 3:13 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Moultrie | 47 min |
| Jul 14, 3:18 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 42 min |
| Jul 14, 3:21 PM CDT | Severe Thunderstorm Warning | ILX | Shelby | 54 min |
| Jul 14, 3:45 PM CDT | Severe Thunderstorm Warning | ILX | Effingham | 30 min |
| Jul 14, 3:54 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 36 min |
| Jul 14, 4:01 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 44 min |
| Jul 14, 4:13 PM CDT | Severe Thunderstorm Warning | ILX | Effingham | 32 min |
| Jul 14, 4:17 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Jasper | 43 min |
| Jul 14, 4:24 PM CDT | Severe Thunderstorm Warning | PAH | Wayne | 66 min |
| Jul 14, 4:49 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson | 56 min |
| Jul 14, 5:22 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Hamilton | 68 min |
| Jul 14, 5:34 PM CDT | Severe Thunderstorm Warning | PAH | Edwards, Wayne | 71 min |
| Jul 14, 5:38 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Perry | 67 min |
| Jul 14, 5:46 PM CDT | Severe Thunderstorm Warning | PAH | Wabash | 74 min |
| Jul 14, 5:53 PM CDT | Severe Thunderstorm Warning | PAH | Williamson | 67 min |
| Jul 14, 6:15 PM CDT | Severe Thunderstorm Warning | PAH | Union | 75 min |
| Jul 14, 6:15 PM CDT | Severe Thunderstorm Warning | PAH | Saline | 75 min |
| Jul 14, 6:39 PM CDT | Severe Thunderstorm Warning | PAH | Johnson | 66 min |
| Jul 14, 6:55 PM CDT | Severe Thunderstorm Warning | PAH | Pope | 65 min |
| Jul 14, 7:06 PM CDT | Severe Thunderstorm Warning | PAH | Massac, Pulaski | 69 min |
| Jul 14, 7:06 PM CDT | Severe Thunderstorm Warning | PAH | Alexander | 69 min |
| Jul 18, 3:58 AM CDT | Severe Thunderstorm Warning | DVN | Carroll | 47 min |
| Jul 18, 1:12 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 63 min |
| Jul 18, 2:25 PM CDT | Severe Thunderstorm Warning | LOT | Winnebago | 50 min |
| Jul 18, 2:39 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 66 min |
| Jul 18, 2:42 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 48 min |
| Jul 18, 2:42 PM CDT | Severe Thunderstorm Warning | LOT | Boone | 48 min |
| Jul 18, 2:52 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 53 min |
| Jul 18, 3:05 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Lee | 55 min |
| Jul 18, 3:07 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 68 min |
| Jul 18, 3:29 PM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane, Kendall | 61 min |
| Jul 18, 3:37 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 68 min |
| Jul 18, 3:57 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Will | 63 min |
| Jul 18, 4:07 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 68 min |
| Jul 18, 4:47 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 58 min |
| Jul 18, 5:02 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 58 min |
| Jul 18, 5:48 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 42 min |
| Jul 18, 6:02 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 43 min |
| Jul 18, 6:22 PM CDT | Severe Thunderstorm Warning | ILX | Morgan | 53 min |
| Jul 18, 6:34 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 56 min |
| Jul 18, 6:52 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 38 min |
| Jul 18, 7:24 PM CDT | Severe Thunderstorm Warning | ILX | Macon | 51 min |
| Jul 18, 7:32 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 58 min |
| Jul 19, 1:45 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 45 min |
| Jul 19, 2:27 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 48 min |
| Jul 19, 3:03 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 47 min |
| Jul 19, 3:29 PM CDT | Severe Thunderstorm Warning | DVN | Mercer | 46 min |
| Jul 19, 3:56 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 64 min |
| Jul 19, 4:09 PM CDT | Severe Thunderstorm Warning | DVN | Warren | 51 min |
| Jul 19, 4:13 PM CDT | Severe Thunderstorm Warning | DVN | Mercer | 32 min |
| Jul 19, 4:18 PM CDT | Severe Thunderstorm Warning | PAH | White | 27 min |
| Jul 19, 4:59 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox | 46 min |
| Jul 19, 5:53 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason | 37 min |
| Jul 19, 6:01 PM CDT | Severe Thunderstorm Warning | PAH | Saline, Williamson | 44 min |
| Jul 19, 6:17 PM CDT | Severe Thunderstorm Warning | PAH | Franklin | 28 min |
| Jul 19, 6:22 PM CDT | Severe Thunderstorm Warning | DVN | McDonough | 48 min |
| Jul 19, 6:26 PM CDT | Severe Thunderstorm Warning | ILX | Mason, Menard | 34 min |
| Jul 19, 7:02 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 43 min |
| Jul 20, 11:23 PM CDT | Severe Thunderstorm Warning | DVN | Whiteside | 67 min |
| Jul 21, 1:37 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, McLean | 38 min |
| Jul 21, 2:19 PM CDT | Severe Thunderstorm Warning | ILX | Piatt | 26 min |
| Jul 21, 2:39 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon, Piatt | 36 min |
| Jul 21, 3:11 PM CDT | Severe Thunderstorm Warning | ILX | Piatt | 49 min |
| Jul 26, 6:28 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 62 min |
| Jul 26, 6:46 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Kane | 59 min |
| Jul 27, 4:51 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island, Whiteside | 64 min |
| Jul 27, 5:08 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 62 min |
| Jul 27, 6:57 PM CDT | Severe Thunderstorm Warning | DVN | McDonough | 63 min |
| Jul 27, 7:18 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 42 min |
| Jul 27, 7:23 PM CDT | Severe Thunderstorm Warning | ILX | Mason | 37 min |
| Jul 27, 8:21 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 39 min |
| Aug 3, 2:53 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 62 min |
| Aug 3, 3:47 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 63 min |
| Aug 3, 4:01 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 64 min |
| Aug 3, 4:23 PM CDT | Severe Thunderstorm Warning | ILX | Knox, Stark | 52 min |
| Aug 3, 5:02 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 63 min |
| Aug 3, 8:04 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 26 min |
| Aug 3, 9:05 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 55 min |
| Aug 3, 9:48 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 32 min |
| Aug 3, 10:41 PM CDT | Severe Thunderstorm Warning | DVN | Hancock | 49 min |
| Aug 4, 12:05 AM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 45 min |
| Aug 4, 2:44 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 46 min |
| Aug 4, 3:49 PM CDT | Severe Thunderstorm Warning | ILX | Woodford | 56 min |
| Aug 4, 4:38 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 37 min |
| Aug 4, 4:41 PM CDT | Severe Thunderstorm Warning | LOT | Will | 49 min |
| Aug 4, 4:54 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess | 36 min |
| Aug 4, 4:58 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 62 min |
| Aug 4, 5:13 PM CDT | Severe Thunderstorm Warning | DVN | Carroll | 47 min |
| Aug 4, 5:43 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 32 min |
| Aug 4, 5:53 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 67 min |
| Aug 4, 6:02 PM CDT | Severe Thunderstorm Warning | LOT | Livingston | 58 min |
| Aug 4, 6:10 PM CDT | Severe Thunderstorm Warning | DVN | Putnam | 50 min |
| Aug 4, 6:16 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Livingston | 59 min |
| Aug 4, 6:53 PM CDT | Severe Thunderstorm Warning | LOT | Ford | 52 min |
| Aug 4, 8:09 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 51 min |
| Aug 15, 4:01 AM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 44 min |
| Aug 15, 4:25 AM CDT | Severe Thunderstorm Warning | ILX | Logan | 35 min |
| Aug 15, 5:08 AM CDT | Severe Thunderstorm Warning | ILX | DeWitt, McLean | 37 min |
| Aug 16, 1:49 AM CDT | Severe Thunderstorm Warning | LOT | Livingston | 26 min |
| Aug 16, 2:42 AM CDT | Severe Thunderstorm Warning | ILX | Knox | 48 min |
| Aug 16, 6:05 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 25 min |
| Aug 16, 7:02 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb | 28 min |
| Aug 16, 8:07 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kendall, Will | 68 min |
| Aug 16, 8:07 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 68 min |
| Aug 16, 8:30 PM CDT | Severe Thunderstorm Warning | ILX | Knox, Stark | 45 min |
| Aug 16, 9:02 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 28 min |
| Aug 16, 9:11 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 49 min |
| Aug 16, 9:15 PM CDT | Severe Thunderstorm Warning | ILX | Knox, Stark | 45 min |
| Aug 16, 9:25 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 65 min |
| Aug 24, 10:35 AM CDT | Severe Thunderstorm Warning | ILX | Macon | 25 min |
| Aug 24, 12:32 PM CDT | Severe Thunderstorm Warning | ILX | Douglas | 28 min |
| Aug 24, 12:48 PM CDT | Severe Thunderstorm Warning | ILX | Coles | 27 min |
| Aug 24, 1:17 PM CDT | Severe Thunderstorm Warning | ILX | Stark | 43 min |
| Aug 24, 1:26 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Coles, Edgar | 49 min |
| Aug 24, 1:52 PM CDT | Severe Thunderstorm Warning | ILX | Woodford | 38 min |
| Aug 24, 2:04 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 41 min |
| Aug 24, 3:17 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 43 min |
| Aug 24, 3:27 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, McLean | 48 min |
| Aug 24, 3:54 PM CDT | Severe Thunderstorm Warning | ILX | Macon | 36 min |
| Aug 24, 4:39 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Warren | 46 min |
| Aug 24, 5:01 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 44 min |
| Aug 24, 5:28 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 32 min |
| Aug 24, 6:06 PM CDT | Severe Thunderstorm Warning | ILX | Mason, Menard | 39 min |
| Aug 24, 6:21 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 39 min |
| Aug 24, 6:51 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Menard | 39 min |
| Aug 24, 7:01 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 44 min |
| Aug 24, 7:10 PM CDT | Severe Thunderstorm Warning | ILX | Moultrie, Piatt | 50 min |
| Aug 24, 7:21 PM CDT | Severe Thunderstorm Warning | ILX | Coles | 39 min |
| Aug 24, 7:47 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 58 min |
| Aug 24, 7:57 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Moultrie | 33 min |
| Aug 24, 8:25 PM CDT | Severe Thunderstorm Warning | ILX | Douglas | 35 min |
| Aug 24, 8:45 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 60 min |
| Aug 24, 8:52 PM CDT | Severe Thunderstorm Warning | ILX | Edgar | 38 min |
| Aug 25, 5:02 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 28 min |
| Aug 25, 5:27 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 48 min |
| Sep 2, 5:23 PM CDT | Severe Thunderstorm Warning | LSX | Clinton | 52 min |
| Sep 8, 11:54 AM CDT | Severe Thunderstorm Warning | PAH | Franklin, Saline | 36 min |
| Sep 16, 6:47 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 48 min |
| Sep 16, 7:50 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 50 min |
| Sep 16, 8:29 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 46 min |
| Sep 16, 8:34 PM CDT | Severe Thunderstorm Warning | DVN | Whiteside | 46 min |
| Sep 16, 8:40 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Stephenson | 50 min |
| Sep 16, 8:51 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 54 min |
| Sep 16, 8:54 PM CDT | Severe Thunderstorm Warning | LOT | Lee | 56 min |
| Sep 16, 10:09 PM CDT | Severe Thunderstorm Warning | ILX | Peoria, Stark | 36 min |
| Sep 16, 10:22 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Woodford | 38 min |
| Sep 16, 10:46 PM CDT | Severe Thunderstorm Warning | DVN | Putnam | 34 min |
| Sep 19, 8:00 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt | 30 min |
| Sep 19, 8:17 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 28 min |
| Nov 1, 3:43 AM CST | Severe Thunderstorm Warning | LSX | Randolph | 32 min |
| Nov 1, 4:14 AM CST | Severe Thunderstorm Warning | PAH | Jackson | 46 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- McLean County14
- DeWitt County12
- Kankakee County11
- Cook County11
- Sangamon County10
- Livingston County10
- Macon County9
- Knox County9
- LaSalle County9
- Iroquois County9
- Will County9
- Pulaski County8
- Johnson County8
- Randolph County8
- Saint Clair County8
- Jackson County8
- Piatt County8
- Lee County8
- Carroll County8
- Jo Daviess County8
- Ford County8
- McHenry County8
- Madison County7
- Menard County7
- Logan County7
- Christian County7
- Champaign County7
- Mason County7
- Rock Island County7
- Henry County7
- Lake County7
- Coles County7
- Union County6
- Washington County6
- Clinton County6
- Wayne County6
- Williamson County6
- Henderson County6
- Mercer County6
- Warren County6
61 more counties
- Stark County6
- Whiteside County6
- Grundy County6
- Alexander County6
- Adams County6
- Edgar County6
- Massac County5
- Perry County5
- Jefferson County5
- Shelby County5
- Saline County5
- Tazewell County5
- DeKalb County5
- Kendall County5
- Boone County5
- DuPage County5
- Vermilion County5
- Winnebago County5
- Pope County4
- Fayette County4
- Effingham County4
- Peoria County4
- Woodford County4
- Ogle County4
- Bureau County4
- Putnam County4
- Stephenson County4
- Kane County4
- Pike County4
- Clark County4
- Richland County4
- Jasper County4
- Franklin County4
- Bond County3
- Greene County3
- Macoupin County3
- Marion County3
- Edwards County3
- Wabash County3
- Fulton County3
- Jersey County3
- Monroe County3
- McDonough County3
- Douglas County3
- Moultrie County3
- Hamilton County2
- White County2
- Gallatin County2
- Marshall County2
- Calhoun County2
- Hancock County2
- Cumberland County2
- Clay County2
- Crawford County2
- Scott County1
- Hardin County1
- Montgomery County1
- Lawrence County1
- Brown County1
- Morgan County1
- Cass County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19961998
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.