Alert archive / Illinois / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Illinois, 2024
41 severe thunderstorm watches in 2024. 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 watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Severe Thunderstorm Watches
- 41
- Busiest month
- July15 severe thunderstorm watches
- Busiest day
- July 30, 20246 severe thunderstorm watches
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 13, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clinton, Jersey, Madison, Monroe and 3 more | 7 hr |
| Mar 13, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Hancock, Henderson, McDonough, Pike and 1 more | 7 hr |
| Mar 14, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | Cass, Champaign, DeWitt, Ford, Fulton, Grundy and 21 more | 7 hr |
| Mar 14, 4:41 AM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Christian, Clark, Clay, Clinton and 27 more | 7 hr |
| Apr 16, 3:21 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Christian, Clay, Clinton, Effingham and 14 more | 5 hr |
| Apr 18, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Christian, Clay, Clinton and 35 more | 8 hr |
| Apr 18, 6:36 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clark, Coles, Crawford, Cumberland, Edgar and 21 more | 6 hr |
| May 20, 12:39 PM CDT | Severe Thunderstorm Watch | SPC | Boone, DeKalb, Kane, Lake, Lee, McHenry and 2 more | 3 hr |
| May 24, 6:07 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 33 more | 9 hr |
| May 24, 2:39 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 31 more | 10 hr |
| May 26, 6:27 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Coles, Cumberland, Edgar, Shelby | 5 hr |
| Jun 13, 1:50 PM CDT | Severe Thunderstorm Watch | SPC | Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 7 more | 8 hr |
| Jun 13, 2:59 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Bureau, Cass, DeWitt, Fulton and 24 more | 10 hr |
| Jun 13, 8:12 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Champaign, Christian, Coles, Douglas, Edgar and 10 more | 5 hr |
| Jun 16, 2:15 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 19 more | 5 hr |
| Jun 22, 7:36 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Carroll, Cook and 34 more | 5 hr |
| Jun 24, 7:31 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Kane, Lake and 4 more | 3 hr |
| Jun 25, 5:00 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Grundy and 13 more | 6 hr |
| Jun 25, 12:10 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, Champaign, Christian, Clark and 25 more | 5 hr |
| Jun 25, 5:17 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Fulton, Hancock, Henderson, Henry and 15 more | 7 hr |
| Jul 2, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Adams | 7 hr |
| Jul 2, 7:30 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Fulton, Knox, Lee, Marshall, Ogle and 6 more | 4 hr |
| Jul 14, 5:55 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 27 more | 9 hr |
| Jul 14, 11:59 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Coles, DeWitt, Douglas, Edgar, Logan and 4 more | 4 hr |
| Jul 15, 3:18 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Fulton, Hancock, Henderson, Henry and 18 more | 8 hr |
| Jul 15, 9:59 PM CDT | Severe Thunderstorm Watch | SPC | Christian, Clark, Coles, Crawford, Cumberland, Douglas and 5 more | 3 hr |
| Jul 29, 7:48 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 29 more | 9 hr |
| Jul 30, 4:02 AM CDT | Severe Thunderstorm Watch | SPC | Hancock, Henderson, McDonough, Warren | 3 hr |
| Jul 30, 6:14 AM CDT | Severe Thunderstorm Watch | SPC | Cass, Christian, Clark, Clay, Coles, Crawford and 16 more | 5 hr |
| Jul 30, 9:30 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Hancock, Pike | 8 hr |
| Jul 30, 10:05 AM CDT | Severe Thunderstorm Watch | SPC | Wabash | 4 hr |
| Jul 30, 2:58 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Christian, Clark, Clay and 39 more | 8 hr |
| Jul 31, 3:46 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Hancock, Henderson, McDonough, Mercer, Warren | 5 hr |
| Jul 31, 5:50 AM CDT | Severe Thunderstorm Watch | SPC | Bond, Brown, Calhoun, Cass, Champaign, Christian and 37 more | 6 hr |
| Jul 31, 12:57 PM CDT | Severe Thunderstorm Watch | SPC | Edwards, Gallatin, Wabash, White | 6 hr |
| Aug 1, 12:07 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Crawford, Edwards, Gallatin, Hamilton, Jasper and 6 more | 7 hr |
| Aug 5, 5:52 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, DeKalb, Grundy, Jo Daviess, Kane and 9 more | 8 hr |
| Aug 15, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 5 hr |
| Aug 15, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, DeWitt, Fulton, Hancock, Henderson, Henry and 15 more | 6 hr |
| Aug 27, 12:04 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Lake, McHenry, Winnebago | 2 hr |
| Aug 27, 5:09 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Knox County12
- Shelby County12
- Lee County12
- Ogle County12
- Winnebago County12
- Hancock County11
- Fulton County11
- LaSalle County11
- Christian County11
- Coles County11
- Henderson County10
- McDonough County10
- Warren County10
- Marshall County10
- Peoria County10
- Stark County10
- Tazewell County10
- Clay County10
- Effingham County10
- Moultrie County10
- Boone County10
- DeKalb County10
- Kane County10
- McHenry County10
- Grundy County9
- Kankakee County9
- Woodford County9
- Clark County9
- Crawford County9
- Cumberland County9
- Edgar County9
- Jasper County9
- Montgomery County9
- Lake County9
- Bureau County9
- Putnam County9
- Stephenson County9
- Bond County8
- Calhoun County8
- Jersey County8
62 more counties
- Adams County8
- Macon County8
- Mason County8
- Sangamon County8
- Schuyler County8
- Fayette County8
- Greene County8
- Lawrence County8
- Macoupin County8
- Richland County8
- Wabash County8
- Carroll County8
- Cook County8
- DuPage County8
- Henry County8
- Kendall County8
- Whiteside County8
- Will County8
- Clinton County7
- Madison County7
- Washington County7
- Brown County7
- Pike County7
- Livingston County7
- Logan County7
- Menard County7
- Morgan County7
- Douglas County7
- Edwards County7
- Marion County7
- Gallatin County7
- White County7
- Jo Daviess County7
- Mercer County7
- Monroe County6
- Randolph County6
- Saint Clair County6
- Cass County6
- Champaign County6
- McLean County6
- Piatt County6
- Scott County6
- Vermilion County6
- Jefferson County6
- Perry County6
- Wayne County6
- Hamilton County6
- Saline County6
- Rock Island County6
- DeWitt County5
- Ford County5
- Iroquois County5
- Franklin County5
- Williamson County5
- Alexander County4
- Hardin County4
- Jackson County4
- Johnson County4
- Massac County4
- Pope County4
- Pulaski County4
- Union County4
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.