Alert archive / Illinois / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Illinois, 1986
158 severe thunderstorm warnings in 1986. 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 1986. Tap one for its archive.
- Severe Thunderstorm Warnings
- 158
- Busiest month
- July70 severe thunderstorm warnings
- Busiest day
- May 6, 198615 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 |
|---|---|---|---|---|
| Mar 10, 10:48 AM CST | Severe Thunderstorm Warning | LSX | Saint Clair | 42 min |
| Mar 10, 11:11 AM CST | Severe Thunderstorm Warning | LSX | Clinton, Washington | 34 min |
| Mar 10, 12:12 PM CST | Severe Thunderstorm Warning | PAH | Hamilton | 48 min |
| Mar 10, 12:29 PM CST | Severe Thunderstorm Warning | ILX | Clark, Coles, Edgar | 31 min |
| Apr 7, 4:03 PM CST | Severe Thunderstorm Warning | LSX | Bond, Clinton | 47 min |
| Apr 7, 4:26 PM CST | Severe Thunderstorm Warning | LSX | Madison | 34 min |
| Apr 7, 4:32 PM CST | Severe Thunderstorm Warning | LSX | Jefferson, Washington | 58 min |
| Apr 7, 4:50 PM CST | Severe Thunderstorm Warning | PAH | Franklin | 55 min |
| Apr 7, 5:37 PM CST | Severe Thunderstorm Warning | LSX | Effingham | 23 min |
| Apr 7, 6:11 PM CST | Severe Thunderstorm Warning | LSX | Perry | 19 min |
| Apr 25, 6:32 PM CST | Severe Thunderstorm Warning | ILX | Lee, Ogle | 58 min |
| Apr 30, 5:15 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Menard, Sangamon | 75 min |
| Apr 30, 6:25 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Piatt | 65 min |
| Apr 30, 6:25 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 65 min |
| Apr 30, 6:40 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Moultrie, Shelby | 50 min |
| Apr 30, 6:50 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 70 min |
| Apr 30, 6:50 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 55 min |
| Apr 30, 7:32 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 58 min |
| Apr 30, 7:50 PM CDT | Severe Thunderstorm Warning | ILX | Logan | 40 min |
| May 6, 12:20 PM CDT | Severe Thunderstorm Warning | ILX | Hancock | 55 min |
| May 6, 12:52 PM CDT | Severe Thunderstorm Warning | ILX | McDonough, Warren | 38 min |
| May 6, 1:10 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 50 min |
| May 6, 1:53 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Peoria, Woodford | 67 min |
| May 6, 2:05 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 25 min |
| May 6, 2:16 PM CDT | Severe Thunderstorm Warning | ILX | Mason, Tazewell | 2 hr |
| May 6, 2:30 PM CDT | Severe Thunderstorm Warning | ILX | Hancock, McDonough, Schuyler | 60 min |
| May 6, 3:41 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 64 min |
| May 6, 3:46 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Hancock, McDonough, Schuyler | 74 min |
| May 6, 5:01 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, McDonough, Mason, Schuyler, Tazewell | 59 min |
| May 6, 5:22 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard | 68 min |
| May 6, 5:22 PM CDT | Severe Thunderstorm Warning | ILX | Logan | 68 min |
| May 6, 6:07 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 68 min |
| May 6, 6:45 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 60 min |
| May 6, 6:56 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 64 min |
| May 6, 7:00 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon | 45 min |
| May 6, 7:49 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 56 min |
| May 6, 8:24 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Montgomery, Shelby | 66 min |
| May 7, 2:40 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 65 min |
| May 7, 3:52 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 68 min |
| May 8, 8:38 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 67 min |
| May 13, 4:42 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 53 min |
| May 13, 9:25 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 35 min |
| May 13, 9:25 PM CDT | Severe Thunderstorm Warning | LSX | Bond | 35 min |
| May 13, 10:06 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 39 min |
| May 14, 6:00 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Jackson, Williamson | 30 min |
| May 14, 7:15 PM CDT | Severe Thunderstorm Warning | IND | Wabash | 45 min |
| May 14, 7:44 PM CDT | Severe Thunderstorm Warning | IND | Lawrence | 46 min |
| May 15, 5:36 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Massac | 39 min |
| May 15, 10:00 PM CDT | Severe Thunderstorm Warning | PAH | Alexander, Pulaski | 60 min |
| May 16, 4:00 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 45 min |
| May 16, 4:31 PM CDT | Severe Thunderstorm Warning | ILX | Macoupin, Morgan | 59 min |
| May 16, 5:03 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 42 min |
| May 16, 5:09 PM CDT | Severe Thunderstorm Warning | ILX | Macon, Sangamon | 56 min |
| May 16, 5:15 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 25 min |
| May 16, 5:54 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Piatt | 51 min |
| May 16, 6:24 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon | 56 min |
| May 16, 8:00 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Douglas, Piatt | 12 min |
| Jun 14, 7:14 PM CDT | Severe Thunderstorm Warning | ILX | Menard | 61 min |
| Jun 30, 1:27 PM CDT | Severe Thunderstorm Warning | ILX | Macon, Piatt | 63 min |
| Jun 30, 2:07 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 68 min |
| Jun 30, 2:38 PM CDT | Severe Thunderstorm Warning | ILX | Moultrie, Shelby | 57 min |
| Jul 1, 1:41 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 34 min |
| Jul 1, 4:55 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 35 min |
| Jul 6, 7:04 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 26 min |
| Jul 8, 7:10 PM CDT | Severe Thunderstorm Warning | DVN | Whiteside | 20 min |
| Jul 8, 7:10 PM CDT | Severe Thunderstorm Warning | ILX | Carroll | 20 min |
| Jul 8, 7:39 PM CDT | Severe Thunderstorm Warning | ILX | Stephenson, Winnebago | 66 min |
| Jul 8, 8:29 PM CDT | Severe Thunderstorm Warning | DVN | Whiteside | 31 min |
| Jul 8, 9:20 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 40 min |
| Jul 9, 5:22 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair | 38 min |
| Jul 9, 5:58 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair | 47 min |
| Jul 9, 6:05 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 55 min |
| Jul 10, 3:19 PM CDT | Severe Thunderstorm Warning | ILX | Montgomery | 56 min |
| Jul 10, 5:51 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Menard | 54 min |
| Jul 10, 6:01 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kankakee, Will | 59 min |
| Jul 10, 6:01 PM CDT | Severe Thunderstorm Warning | LOT | Livingston | 59 min |
| Jul 10, 6:19 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Livingston | 56 min |
| Jul 10, 6:27 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 48 min |
| Jul 10, 7:15 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 45 min |
| Jul 10, 7:35 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon | 55 min |
| Jul 10, 7:57 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 63 min |
| Jul 10, 7:57 PM CDT | Severe Thunderstorm Warning | ILX | Menard | 63 min |
| Jul 10, 8:01 PM CDT | Severe Thunderstorm Warning | ILX | Piatt | 59 min |
| Jul 10, 8:17 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 58 min |
| Jul 11, 2:59 PM CDT | Severe Thunderstorm Warning | ILX | Edgar, Vermilion | 61 min |
| Jul 11, 4:45 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Washington | 60 min |
| Jul 11, 4:45 PM CDT | Severe Thunderstorm Warning | LSX | Perry, Randolph | 60 min |
| Jul 11, 5:07 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 53 min |
| Jul 11, 5:45 PM CDT | Severe Thunderstorm Warning | LSX | Perry | 60 min |
| Jul 11, 5:45 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 60 min |
| Jul 11, 6:00 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 45 min |
| Jul 11, 6:45 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 60 min |
| Jul 12, 1:22 PM CDT | Severe Thunderstorm Warning | LSX | Perry, Randolph | 60 min |
| Jul 12, 2:15 PM CDT | Severe Thunderstorm Warning | PAH | Franklin | 30 min |
| Jul 12, 2:45 PM CDT | Severe Thunderstorm Warning | PAH | Williamson | 30 min |
| Jul 12, 2:55 PM CDT | Severe Thunderstorm Warning | IND | White | 35 min |
| Jul 12, 3:35 PM CDT | Severe Thunderstorm Warning | PAH | Union | 40 min |
| Jul 14, 8:08 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Hamilton | 67 min |
| Jul 15, 7:25 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 65 min |
| Jul 19, 6:41 PM CDT | Severe Thunderstorm Warning | ILX | Winnebago | 39 min |
| Jul 19, 6:41 PM CDT | Severe Thunderstorm Warning | ILX | Boone | 54 min |
| Jul 19, 6:53 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 67 min |
| Jul 28, 12:35 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 40 min |
| Jul 28, 2:58 AM CDT | Severe Thunderstorm Warning | ILX | Shelby | 62 min |
| Jul 29, 12:30 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 45 min |
| Jul 29, 12:55 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 45 min |
| Jul 29, 1:01 AM CDT | Severe Thunderstorm Warning | ILX | Hancock | 59 min |
| Jul 29, 1:20 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 40 min |
| Jul 29, 1:20 AM CDT | Severe Thunderstorm Warning | LSX | Brown | 40 min |
| Jul 29, 1:36 AM CDT | Severe Thunderstorm Warning | ILX | McDonough, Schuyler | 27 min |
| Jul 29, 1:45 AM CDT | Severe Thunderstorm Warning | LSX | Scott | 45 min |
| Jul 29, 2:10 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 50 min |
| Jul 29, 2:40 AM CDT | Severe Thunderstorm Warning | LSX | Jersey | 50 min |
| Jul 29, 3:10 AM CDT | Severe Thunderstorm Warning | LSX | Madison | 50 min |
| Jul 29, 3:13 AM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 62 min |
| Jul 29, 3:53 AM CDT | Severe Thunderstorm Warning | ILX | Christian, Montgomery | 67 min |
| Jul 30, 2:56 PM CDT | Severe Thunderstorm Warning | ILX | Macoupin, Morgan | 49 min |
| Jul 30, 5:10 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Massac, Pope | 50 min |
| Jul 31, 1:36 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Peoria | 69 min |
| Jul 31, 1:43 AM CDT | Severe Thunderstorm Warning | DVN | Mercer | 57 min |
| Jul 31, 2:48 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer | 57 min |
| Jul 31, 2:53 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Peoria | 22 min |
| Jul 31, 3:17 AM CDT | Severe Thunderstorm Warning | ILX | Macon, Moultrie, Piatt | 58 min |
| Jul 31, 3:17 AM CDT | Severe Thunderstorm Warning | ILX | Douglas | 58 min |
| Jul 31, 4:11 AM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 19 min |
| Jul 31, 4:36 AM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 24 min |
| Jul 31, 4:53 AM CDT | Severe Thunderstorm Warning | ILX | Christian | 52 min |
| Jul 31, 5:15 AM CDT | Severe Thunderstorm Warning | ILX | Macon | 45 min |
| Jul 31, 5:35 AM CDT | Severe Thunderstorm Warning | ILX | Moultrie, Shelby | 40 min |
| Jul 31, 5:49 AM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland | 41 min |
| Jul 31, 6:58 AM CDT | Severe Thunderstorm Warning | IND | Edwards, Wabash, White | 32 min |
| Jul 31, 7:58 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 62 min |
| Aug 10, 1:39 AM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 66 min |
| Sep 10, 6:35 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 40 min |
| Sep 19, 12:36 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 44 min |
| Sep 19, 1:23 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 57 min |
| Sep 19, 2:03 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 57 min |
| Sep 19, 2:15 PM CDT | Severe Thunderstorm Warning | LSX | Scott | 45 min |
| Sep 19, 3:01 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Scott | 49 min |
| Sep 19, 3:06 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Piatt | 54 min |
| Sep 19, 3:17 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 58 min |
| Sep 19, 3:35 PM CDT | Severe Thunderstorm Warning | ILX | Macoupin, Morgan | 55 min |
| Sep 19, 5:20 PM CDT | Severe Thunderstorm Warning | IND | Clay, Wayne | 40 min |
| Sep 19, 5:56 PM CDT | Severe Thunderstorm Warning | IND | Wayne | 64 min |
| Sep 19, 9:02 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 58 min |
| Sep 22, 6:41 PM CDT | Severe Thunderstorm Warning | ILX | Carroll, Ogle | 64 min |
| Sep 22, 7:31 PM CDT | Severe Thunderstorm Warning | ILX | Boone, Winnebago | 24 min |
| Sep 24, 6:41 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Livingston | 64 min |
| Sep 25, 12:21 AM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Livingston | 69 min |
| Sep 26, 1:19 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 31 min |
| Sep 26, 1:19 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 31 min |
| Sep 26, 1:25 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 30 min |
| Sep 28, 4:39 PM CDT | Severe Thunderstorm Warning | ILX | Stark | 66 min |
| Sep 28, 4:39 PM CDT | Severe Thunderstorm Warning | ILX | Putnam | 51 min |
| Sep 28, 5:14 PM CDT | Severe Thunderstorm Warning | ILX | Boone, Winnebago | 61 min |
| Sep 28, 5:20 PM CDT | Severe Thunderstorm Warning | ILX | Stephenson | 55 min |
| Sep 29, 5:09 PM CDT | Severe Thunderstorm Warning | ILX | Montgomery | 51 min |
| Oct 13, 4:25 AM CDT | Severe Thunderstorm Warning | ILX | Stephenson | 65 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Sangamon County15
- Morgan County9
- Macon County8
- Piatt County7
- Champaign County7
- Vermilion County7
- Adams County7
- Menard County6
- Christian County6
- Clinton County5
- Washington County5
- Shelby County5
- McDonough County5
- Madison County4
- Franklin County4
- Perry County4
- Logan County4
- DeWitt County4
- Moultrie County4
- Hancock County4
- Peoria County4
- Schuyler County4
- Fulton County4
- Montgomery County4
- Winnebago County4
- Livingston County4
- Pike County4
- Saint Clair County3
- Jefferson County3
- Cass County3
- Randolph County3
- Jackson County3
- Calhoun County3
- Macoupin County3
- Lake County3
- Stephenson County3
- Boone County3
- Scott County3
- Hamilton County2
- Coles County2
48 more counties
- Edgar County2
- Bond County2
- Ogle County2
- Iroquois County2
- Mason County2
- Tazewell County2
- Williamson County2
- Wabash County2
- Johnson County2
- Massac County2
- Jersey County2
- Douglas County2
- Whiteside County2
- Carroll County2
- Marion County2
- Kankakee County2
- Will County2
- White County2
- McHenry County2
- Brown County2
- Greene County2
- Mercer County2
- Wayne County2
- LaSalle County2
- Clark County1
- Effingham County1
- Lee County1
- Warren County1
- Marshall County1
- Woodford County1
- Monroe County1
- Lawrence County1
- Alexander County1
- Pulaski County1
- Rock Island County1
- Grundy County1
- Ford County1
- Union County1
- Pope County1
- Henry County1
- Cumberland County1
- Edwards County1
- Jo Daviess County1
- Clay County1
- McLean County1
- Cook County1
- Stark County1
- Putnam County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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.