Weather alerts in Illinois, 1987
216 weather alerts in 1987, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 1987. Tap one for its archive.
- Alerts
- 216
- Warnings
- 216
- Watches
- 0
- Advisories
- 0
- Busiest month
- July67 alerts
- Busiest day
- July 6, 198725 alerts
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 7, 4:03 PM CST | Severe Thunderstorm Warning | LSX | Madison | 42 min |
| Jan 7, 4:58 PM CST | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 32 min |
| Apr 11, 3:51 PM CDT | Tornado Warning | ILX | Peoria, Woodford | 69 min |
| Apr 11, 4:05 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Piatt | 55 min |
| Apr 11, 4:27 PM CDT | Tornado Warning | ILX | DeWitt, Logan | 33 min |
| Apr 11, 4:42 PM CDT | Tornado Warning | ILX | Macon, Piatt | 33 min |
| Apr 11, 4:42 PM CDT | Tornado Warning | ILX | Champaign | 33 min |
| Apr 11, 5:10 PM CDT | Tornado Warning | ILX | Champaign, Piatt | 35 min |
| Apr 13, 4:45 AM CDT | Severe Thunderstorm Warning | PAH | Alexander | 45 min |
| Apr 13, 6:50 AM CDT | Severe Thunderstorm Warning | PAH | Hardin | 40 min |
| Apr 13, 8:31 AM CDT | Severe Thunderstorm Warning | LSX | Monroe | 44 min |
| Apr 13, 10:42 AM CDT | Tornado Warning | ILX | Christian | 18 min |
| May 11, 4:58 PM CDT | Severe Thunderstorm Warning | LOT | Kane, McHenry | 62 min |
| May 11, 4:58 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 62 min |
| May 11, 5:24 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane | 66 min |
| May 11, 5:32 PM CDT | Severe Thunderstorm Warning | ILX | Lee | 43 min |
| May 11, 5:42 PM CDT | Severe Thunderstorm Warning | ILX | DeKalb | 63 min |
| May 11, 6:20 PM CDT | Severe Thunderstorm Warning | LOT | Kendall, LaSalle | 55 min |
| May 11, 6:26 PM CDT | Severe Thunderstorm Warning | ILX | Peoria, Tazewell | 49 min |
| May 14, 2:54 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 66 min |
| May 14, 4:55 PM CDT | Severe Thunderstorm Warning | ILX | Christian | 65 min |
| May 18, 12:16 PM CDT | Tornado Warning | ILX | DeWitt | 29 min |
| May 18, 6:41 PM CDT | Tornado Warning | DVN | Henry | 34 min |
| May 20, 9:44 AM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 31 min |
| May 20, 5:10 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island | 50 min |
| May 20, 5:30 PM CDT | Severe Thunderstorm Warning | ILX | Stark | 60 min |
| May 20, 6:20 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 35 min |
| May 20, 6:34 PM CDT | Tornado Warning | ILX | Woodford | 51 min |
| May 20, 8:01 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 44 min |
| May 20, 9:02 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, LaSalle | 28 min |
| May 21, 6:39 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 21 min |
| May 21, 7:01 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 59 min |
| May 21, 7:12 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown | 48 min |
| May 21, 7:25 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Pike, Scott | 50 min |
| May 21, 7:25 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 50 min |
| May 21, 7:28 PM CDT | Severe Thunderstorm Warning | ILX | McDonough, Schuyler | 62 min |
| May 21, 8:10 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Pike | 50 min |
| May 21, 8:10 PM CDT | Severe Thunderstorm Warning | LSX | Scott | 50 min |
| May 21, 8:27 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 63 min |
| May 21, 8:27 PM CDT | Tornado Warning | ILX | Fulton, McDonough | 63 min |
| May 21, 8:42 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Whiteside | 48 min |
| May 21, 8:57 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Scott | 53 min |
| May 21, 9:00 PM CDT | Severe Thunderstorm Warning | ILX | Bureau, Stark | 60 min |
| May 21, 9:23 PM CDT | Tornado Warning | ILX | Peoria | 27 min |
| May 21, 9:28 PM CDT | Severe Thunderstorm Warning | ILX | Lee | 47 min |
| May 21, 9:28 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Sangamon | 62 min |
| May 21, 9:28 PM CDT | Severe Thunderstorm Warning | ILX | Menard | 62 min |
| May 21, 9:47 PM CDT | Severe Thunderstorm Warning | ILX | McLean, Mason, Tazewell, Woodford | 58 min |
| May 21, 10:07 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Livingston | 53 min |
| May 21, 10:09 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Sangamon | 31 min |
| May 21, 10:09 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon | 66 min |
| May 21, 10:24 PM CDT | Tornado Warning | ILX | Macon, Piatt | 26 min |
| May 21, 10:44 PM CDT | Tornado Warning | ILX | McLean | 41 min |
| May 21, 11:06 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 54 min |
| May 21, 11:37 PM CDT | Severe Thunderstorm Warning | ILX | Winnebago | 23 min |
| May 30, 12:49 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois | 56 min |
| May 31, 6:41 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 64 min |
| May 31, 7:21 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Whiteside | 24 min |
| May 31, 7:54 PM CDT | Severe Thunderstorm Warning | ILX | Bureau | 66 min |
| May 31, 9:50 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell, Woodford | 55 min |
| Jun 1, 1:50 PM CDT | Tornado Warning | ILX | Vermilion | 25 min |
| Jun 1, 2:21 PM CDT | Tornado Warning | ILX | Vermilion | 24 min |
| Jun 2, 2:32 AM CDT | Severe Thunderstorm Warning | ILX | DeKalb, Ogle | 43 min |
| Jun 2, 12:12 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 48 min |
| Jun 2, 12:12 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 48 min |
| Jun 2, 12:19 PM CDT | Severe Thunderstorm Warning | ILX | McDonough | 41 min |
| Jun 2, 12:20 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan | 55 min |
| Jun 2, 12:34 PM CDT | Severe Thunderstorm Warning | ILX | Menard | 56 min |
| Jun 2, 1:03 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Piatt | 57 min |
| Jun 2, 1:09 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 55 min |
| Jun 2, 1:47 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell, Woodford | 58 min |
| Jun 2, 2:00 PM CDT | Tornado Warning | ILX | Champaign, Vermilion | 30 min |
| Jun 2, 2:01 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 44 min |
| Jun 2, 2:05 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Will | 55 min |
| Jun 2, 2:10 PM CDT | Tornado Warning | ILX | Tazewell | 65 min |
| Jun 2, 2:12 PM CDT | Severe Thunderstorm Warning | ILX | Macon | 48 min |
| Jun 2, 2:33 PM CDT | Tornado Warning | ILX | Vermilion | 27 min |
| Jun 2, 2:35 PM CDT | Tornado Warning | ILX | McLean | 55 min |
| Jun 2, 2:38 PM CDT | Severe Thunderstorm Warning | LOT | Livingston | 67 min |
| Jun 2, 2:44 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Menard | 46 min |
| Jun 2, 5:55 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Cumberland, Shelby | 50 min |
| Jun 2, 5:55 PM CDT | Severe Thunderstorm Warning | ILX | Edgar | 50 min |
| Jun 11, 8:03 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 57 min |
| Jun 11, 8:42 PM CDT | Tornado Warning | LOT | Cook, DuPage | 48 min |
| Jun 12, 3:32 PM CDT | Tornado Warning | ILX | Clark | 28 min |
| Jun 12, 8:45 PM CDT | Severe Thunderstorm Warning | PAH | Franklin | 60 min |
| Jun 12, 9:15 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 90 min |
| Jun 12, 9:45 PM CDT | Severe Thunderstorm Warning | PAH | Franklin | 30 min |
| Jun 13, 2:28 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 62 min |
| Jun 13, 3:28 PM CDT | Tornado Warning | ILX | Edgar | 32 min |
| Jun 13, 5:01 PM CDT | Severe Thunderstorm Warning | IND | Lawrence, Wabash | 59 min |
| Jun 16, 3:13 PM CDT | Severe Thunderstorm Warning | LSX | Perry, Randolph, Washington | 47 min |
| Jun 16, 4:08 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 52 min |
| Jun 22, 4:44 PM CDT | Severe Thunderstorm Warning | IND | Wabash | 31 min |
| Jun 28, 5:15 PM CDT | Tornado Warning | PAH | Jackson | 30 min |
| Jun 28, 6:01 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 59 min |
| Jun 28, 6:10 PM CDT | Severe Thunderstorm Warning | PAH | Williamson | 50 min |
| Jun 29, 1:56 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois | 64 min |
| Jun 29, 2:43 PM CDT | Tornado Warning | ILX | McLean | 47 min |
| Jun 29, 3:00 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 30 min |
| Jun 29, 3:04 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 41 min |
| Jun 29, 4:47 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 43 min |
| Jul 4, 2:51 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, Macon | 54 min |
| Jul 4, 6:45 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 25 min |
| Jul 5, 1:15 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 45 min |
| Jul 5, 1:15 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 45 min |
| Jul 5, 2:22 PM CDT | Severe Thunderstorm Warning | ILX | Macoupin, Montgomery, Morgan | 38 min |
| Jul 5, 3:15 PM CDT | Severe Thunderstorm Warning | PAH | Massac, Pope | 45 min |
| Jul 5, 8:09 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 36 min |
| Jul 6, 12:21 AM CDT | Tornado Warning | ILX | Clark, Cumberland | 24 min |
| Jul 6, 11:20 AM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 55 min |
| Jul 6, 12:00 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair, Washington | 60 min |
| Jul 6, 12:55 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 65 min |
| Jul 6, 1:05 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Marion, Washington | 40 min |
| Jul 6, 1:44 PM CDT | Severe Thunderstorm Warning | IND | Clay, Wayne | 46 min |
| Jul 6, 1:52 PM CDT | Severe Thunderstorm Warning | ILX | Carroll | 53 min |
| Jul 6, 2:00 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 60 min |
| Jul 6, 2:13 PM CDT | Severe Thunderstorm Warning | IND | Edwards, Richland | 32 min |
| Jul 6, 2:21 PM CDT | Severe Thunderstorm Warning | ILX | Stephenson | 54 min |
| Jul 6, 2:23 PM CDT | Severe Thunderstorm Warning | IND | Lawrence, Wabash | 37 min |
| Jul 6, 2:54 PM CDT | Severe Thunderstorm Warning | ILX | Winnebago | 51 min |
| Jul 6, 3:10 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Pike | 50 min |
| Jul 6, 3:13 PM CDT | Severe Thunderstorm Warning | ILX | Boone | 17 min |
| Jul 6, 3:24 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 39 min |
| Jul 6, 3:45 PM CDT | Severe Thunderstorm Warning | LOT | Kane, McHenry | 60 min |
| Jul 6, 4:24 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey, Madison | 51 min |
| Jul 6, 4:37 PM CDT | Severe Thunderstorm Warning | ILX | Macoupin | 53 min |
| Jul 6, 4:45 PM CDT | Severe Thunderstorm Warning | ILX | Montgomery | 60 min |
| Jul 6, 4:55 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 35 min |
| Jul 6, 5:05 PM CDT | Tornado Warning | ILX | Knox, Peoria | 55 min |
| Jul 6, 5:26 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 64 min |
| Jul 6, 5:52 PM CDT | Severe Thunderstorm Warning | LSX | Effingham | 53 min |
| Jul 6, 6:55 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Edgar | 45 min |
| Jul 7, 3:39 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton | 36 min |
| Jul 8, 6:56 PM CDT | Severe Thunderstorm Warning | ILX | Ogle | 49 min |
| Jul 9, 11:25 AM CDT | Severe Thunderstorm Warning | ILX | Macon | 36 min |
| Jul 10, 4:06 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 24 min |
| Jul 10, 4:48 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 57 min |
| Jul 10, 5:33 PM CDT | Severe Thunderstorm Warning | LOT | Kendall, Will | 57 min |
| Jul 10, 6:24 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 66 min |
| Jul 10, 6:31 PM CDT | Severe Thunderstorm Warning | ILX | Macoupin | 59 min |
| Jul 10, 9:41 PM CDT | Severe Thunderstorm Warning | IND | Richland | 34 min |
| Jul 10, 10:04 PM CDT | Severe Thunderstorm Warning | IND | Lawrence | 26 min |
| Jul 12, 6:33 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 42 min |
| Jul 15, 3:00 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 30 min |
| Jul 15, 4:10 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 20 min |
| Jul 21, 5:12 PM CDT | Severe Thunderstorm Warning | DVN | Whiteside | 48 min |
| Jul 26, 3:32 PM CDT | Severe Thunderstorm Warning | ILX | Ogle, Stephenson | 43 min |
| Jul 26, 4:21 PM CDT | Severe Thunderstorm Warning | ILX | Boone, DeKalb, Winnebago | 54 min |
| Jul 26, 4:35 PM CDT | Severe Thunderstorm Warning | LOT | Kane | 55 min |
| Jul 26, 5:10 PM CDT | Severe Thunderstorm Warning | LOT | Kane, McHenry | 50 min |
| Jul 26, 5:30 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Kane, McHenry | 60 min |
| Jul 26, 5:30 PM CDT | Severe Thunderstorm Warning | LOT | DuPage | 60 min |
| Jul 26, 5:47 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Moultrie | 58 min |
| Jul 26, 6:08 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Lake | 32 min |
| Jul 26, 11:37 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Sangamon | 68 min |
| Jul 27, 1:32 PM CDT | Severe Thunderstorm Warning | IND | Crawford, Lawrence | 43 min |
| Jul 27, 4:05 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Saline | 55 min |
| Jul 27, 4:55 PM CDT | Severe Thunderstorm Warning | PAH | Pulaski | 50 min |
| Jul 28, 7:45 PM CDT | Severe Thunderstorm Warning | IND | Gallatin, White | 45 min |
| Jul 29, 5:33 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 57 min |
| Jul 29, 5:54 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 66 min |
| Jul 29, 6:16 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 14 min |
| Jul 29, 6:16 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Whiteside | 14 min |
| Jul 30, 4:02 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 28 min |
| Jul 30, 4:59 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox | 31 min |
| Jul 30, 5:38 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Douglas, Edgar | 67 min |
| Jul 31, 2:56 PM CDT | Severe Thunderstorm Warning | ILX | Woodford | 64 min |
| Jul 31, 4:05 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 55 min |
| Aug 3, 2:59 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island, Whiteside | 16 min |
| Aug 3, 3:52 PM CDT | Severe Thunderstorm Warning | ILX | Knox, Stark | 68 min |
| Aug 3, 4:27 PM CDT | Severe Thunderstorm Warning | ILX | Boone, Winnebago | 48 min |
| Aug 3, 5:02 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 58 min |
| Aug 3, 5:15 PM CDT | Severe Thunderstorm Warning | PAH | Hardin | 45 min |
| Aug 3, 5:19 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell, Woodford | 56 min |
| Aug 3, 5:19 PM CDT | Severe Thunderstorm Warning | ILX | Marshall, Putnam | 56 min |
| Aug 3, 5:42 PM CDT | Severe Thunderstorm Warning | ILX | Henderson, McDonough, Warren | 48 min |
| Aug 3, 5:42 PM CDT | Severe Thunderstorm Warning | ILX | Hancock | 48 min |
| Aug 3, 6:35 PM CDT | Severe Thunderstorm Warning | ILX | McDonough | 55 min |
| Aug 3, 6:55 PM CDT | Severe Thunderstorm Warning | ILX | Mason, Tazewell | 65 min |
| Aug 3, 9:45 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 60 min |
| Aug 8, 4:28 PM CDT | Tornado Warning | DVN | Mercer, Rock Island | 62 min |
| Aug 8, 8:04 PM CDT | Tornado Warning | ILX | Christian, Sangamon | 26 min |
| Aug 8, 8:51 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 69 min |
| Aug 8, 9:30 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 60 min |
| Aug 14, 5:45 AM CDT | Flash Flood Warning | LOT | Cook, DuPage | 2 hr |
| Aug 14, 7:25 AM CDT | Flash Flood Warning | LOT | Cook, DuPage | 3 hr |
| Aug 14, 9:26 AM CDT | Flash Flood Warning | LOT | Cook, DuPage | 5 hr |
| Aug 14, 1:36 PM CDT | Flash Flood Warning | LOT | Cook, DuPage | 6 hr |
| Aug 16, 5:17 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 43 min |
| Aug 16, 6:12 PM CDT | Severe Thunderstorm Warning | DVN | Whiteside | 33 min |
| Aug 16, 6:15 PM CDT | Severe Thunderstorm Warning | ILX | Stephenson, Winnebago | 45 min |
| Aug 16, 6:38 PM CDT | Severe Thunderstorm Warning | ILX | Carroll | 52 min |
| Aug 16, 6:48 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 42 min |
| Aug 16, 7:02 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Whiteside | 28 min |
| Aug 16, 7:11 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 49 min |
| Aug 16, 7:48 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Pike | 42 min |
| Aug 16, 8:34 PM CDT | Severe Thunderstorm Warning | LOT | Kane | 56 min |
| Aug 16, 9:17 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Menard, Sangamon | 58 min |
| Aug 16, 9:36 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 54 min |
| Aug 16, 10:06 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon | 69 min |
| Aug 16, 10:31 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 59 min |
| Aug 16, 10:40 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Piatt | 65 min |
| Aug 20, 8:18 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 27 min |
| Aug 21, 1:49 AM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 26 min |
| Aug 21, 2:18 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island | 42 min |
| Aug 21, 3:31 AM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 29 min |
| Aug 21, 4:01 AM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 59 min |
| Aug 21, 4:01 AM CDT | Severe Thunderstorm Warning | DVN | Mercer | 59 min |
| Aug 21, 4:57 AM CDT | Severe Thunderstorm Warning | DVN | Henry | 33 min |
| Aug 21, 5:28 AM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 47 min |
| Aug 21, 5:34 AM CDT | Severe Thunderstorm Warning | ILX | Bureau, Knox, Stark | 26 min |
| Aug 21, 5:53 AM CDT | Flash Flood Warning | DVN | Rock Island | 3 hr |
| Aug 21, 6:24 AM CDT | Tornado Warning | ILX | Woodford | 31 min |
| Sep 16, 4:50 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, McDonough, Warren | 55 min |
| Sep 16, 5:50 PM CDT | Severe Thunderstorm Warning | ILX | Knox | 55 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 182 |
| Tornado Warning | 29 |
| Flooding | |
| Flash Flood Warning | 5 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cook County14
- Champaign County11
- Rock Island County11
- DuPage County10
- Vermilion County10
- Henry County9
- Sangamon County9
- Saint Clair County8
- Woodford County8
- Tazewell County8
- Macon County7
- Kane County7
- Whiteside County7
- Knox County7
- Peoria County6
- DeWitt County6
- Piatt County6
- Adams County6
- McDonough County6
- Logan County5
- Iroquois County5
- Pike County5
- Menard County5
- Winnebago County5
- Madison County4
- Monroe County4
- Christian County4
- McHenry County4
- LaSalle County4
- Mercer County4
- Stark County4
- Brown County4
- Calhoun County4
- Cass County4
- Morgan County4
- McLean County4
- Will County4
- Edgar County4
- Jackson County4
- Lawrence County4
59 more counties
- DeKalb County3
- Randolph County3
- Greene County3
- Scott County3
- Fulton County3
- Bureau County3
- Ogle County3
- Clark County3
- Wabash County3
- Washington County3
- Macoupin County3
- Jo Daviess County3
- Stephenson County3
- Boone County3
- Hardin County2
- Lake County2
- Lee County2
- Kendall County2
- Mason County2
- Livingston County2
- Ford County2
- Cumberland County2
- Franklin County2
- Montgomery County2
- Jersey County2
- Clinton County2
- Carroll County2
- Richland County2
- Fayette County2
- Coles County2
- Warren County2
- Alexander County1
- Grundy County1
- Schuyler County1
- Kankakee County1
- Shelby County1
- Perry County1
- Williamson County1
- Massac County1
- Pope County1
- Jefferson County1
- Marion County1
- Clay County1
- Wayne County1
- Edwards County1
- Effingham County1
- Bond County1
- Moultrie County1
- Crawford County1
- Johnson County1
- Saline County1
- Pulaski County1
- Gallatin County1
- White County1
- Douglas County1
- Marshall County1
- Putnam County1
- Henderson County1
- Hancock County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19861988
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.