Alert archive / Illinois / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Illinois, July 2021
63 severe thunderstorm warnings in July 2021. 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 July 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 63
- Busiest day
- July 10, 202122 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Jul 8, 2:04 PM CDT | Severe Thunderstorm Warning | PAH | White | 26 min |
| Jul 8, 3:56 PM CDT | Severe Thunderstorm Warning | PAH | Alexander | 49 min |
| Jul 9, 6:23 PM CDT | Severe Thunderstorm Warning | DVN | Henderson | 37 min |
| Jul 9, 6:50 PM CDT | Severe Thunderstorm Warning | DVN | Henderson | 25 min |
| Jul 9, 7:08 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, McDonough, Warren | 37 min |
| Jul 9, 7:19 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, McDonough | 41 min |
| Jul 9, 7:39 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, McDonough, Warren | 66 min |
| Jul 9, 8:03 PM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 57 min |
| Jul 9, 8:07 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown | 38 min |
| Jul 9, 8:43 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 47 min |
| Jul 9, 8:57 PM CDT | Severe Thunderstorm Warning | DVN | Hancock | 33 min |
| Jul 9, 9:10 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 65 min |
| Jul 9, 9:17 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Pike | 43 min |
| Jul 9, 11:28 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 47 min |
| Jul 9, 11:43 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Moultrie, Shelby | 47 min |
| Jul 9, 11:59 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey, Madison | 61 min |
| Jul 10, 12:42 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Monroe, Saint Clair, Washington | 63 min |
| Jul 10, 1:08 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 52 min |
| Jul 10, 1:36 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Marion, Saint Clair, Washington | 54 min |
| Jul 10, 1:50 AM CDT | Severe Thunderstorm Warning | LSX | Randolph | 40 min |
| Jul 10, 3:05 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair | 21 min |
| Jul 10, 4:31 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion, Randolph, Washington | 59 min |
| Jul 10, 4:36 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson, Perry | 39 min |
| Jul 10, 5:09 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Jefferson, Perry | 36 min |
| Jul 10, 6:00 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Hamilton, Saline, Williamson | 45 min |
| Jul 10, 6:22 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Richland | 53 min |
| Jul 10, 8:16 PM CDT | Severe Thunderstorm Warning | PAH | Alexander | 44 min |
| Jul 12, 2:11 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois | 49 min |
| Jul 12, 2:54 PM CDT | Severe Thunderstorm Warning | ILX | Edgar | 30 min |
| Jul 14, 11:40 AM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 35 min |
| Jul 14, 12:35 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 40 min |
| Jul 14, 4:27 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 33 min |
| Jul 14, 11:10 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess | 50 min |
| Jul 14, 11:41 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 34 min |
| Jul 15, 12:05 AM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 25 min |
| Jul 15, 12:07 AM CDT | Severe Thunderstorm Warning | DVN | Carroll, Whiteside | 23 min |
| Jul 15, 12:08 AM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 52 min |
| Jul 15, 12:47 AM CDT | Severe Thunderstorm Warning | LOT | Boone, Winnebago | 43 min |
| Jul 15, 1:01 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Ogle | 33 min |
| Jul 15, 3:39 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason, Menard, Sangamon | 66 min |
| Jul 15, 4:52 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, McLean, Macon, Piatt | 38 min |
| Jul 15, 5:12 PM CDT | Severe Thunderstorm Warning | LOT | Ford | 35 min |
| Jul 24, 3:54 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 51 min |
| Jul 24, 4:26 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 49 min |
| Jul 24, 5:01 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 59 min |
| Jul 24, 5:36 PM CDT | Severe Thunderstorm Warning | LOT | Will | 16 min |
| Jul 24, 6:07 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 53 min |
| Jul 24, 6:36 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 39 min |
| Jul 24, 7:22 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 53 min |
| Jul 24, 8:10 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 65 min |
| Jul 24, 8:36 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 39 min |
| Jul 28, 4:50 AM CDT | Severe Thunderstorm Warning | LOT | Cook | 25 min |
| Jul 28, 5:27 AM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 34 min |
| Jul 29, 1:23 AM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry, Winnebago | 82 min |
| Jul 29, 1:30 AM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess, Stephenson | 60 min |
| Jul 29, 1:49 AM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 71 min |
| Jul 29, 2:14 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DeKalb, DuPage, Kane | 76 min |
| Jul 29, 2:58 AM CDT | Severe Thunderstorm Warning | LOT | Cook, Grundy, Kendall, Will | 77 min |
| Jul 29, 3:45 AM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 60 min |
| Jul 29, 7:28 PM CDT | Severe Thunderstorm Warning | ILX | Crawford, Lawrence | 35 min |
| Jul 29, 9:16 PM CDT | Severe Thunderstorm Warning | ILX | Lawrence, Richland | 29 min |
| Jul 29, 9:30 PM CDT | Severe Thunderstorm Warning | ILX | Richland | 15 min |
| Jul 29, 9:56 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Macoupin, Madison, Montgomery | 34 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cook County6
- Henderson County5
- Jo Daviess County5
- Hancock County4
- Madison County4
- Bond County4
- Clinton County4
- Will County4
- Kankakee County4
- McDonough County3
- Brown County3
- Saint Clair County3
- Washington County3
- Randolph County3
- Richland County3
- Iroquois County3
- Carroll County3
- Stephenson County3
- Winnebago County3
- Alexander County2
- Warren County2
- Adams County2
- Calhoun County2
- Jersey County2
- Monroe County2
- Marion County2
- Jefferson County2
- Perry County2
- Franklin County2
- Ford County2
- Ogle County2
- Boone County2
- DeKalb County2
- DuPage County2
- McHenry County2
- Lawrence County2
- White County1
- Schuyler County1
- Pike County1
- Christian County1
26 more counties
- Moultrie County1
- Shelby County1
- Hamilton County1
- Saline County1
- Williamson County1
- Clay County1
- Edgar County1
- Bureau County1
- Putnam County1
- Whiteside County1
- Logan County1
- Mason County1
- Menard County1
- Sangamon County1
- DeWitt County1
- McLean County1
- Macon County1
- Piatt County1
- Vermilion County1
- Lake County1
- Kane County1
- Grundy County1
- Kendall County1
- Crawford County1
- Macoupin County1
- Montgomery County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.