Alert archive / Illinois / Severe Thunderstorm Watches / 2026
Severe Thunderstorm Watches in Illinois, June 2026
10 severe thunderstorm watches in June 2026. 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 June 2026. Tap one for its archive.
- Severe Thunderstorm Watches
- 10
- Busiest day
- June 10, 20262 severe thunderstorm watches
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 |
|---|---|---|---|---|
| Jun 1, 3:34 AM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Clinton, Jersey, Madison, Monroe, Randolph and 2 more | 4 hr |
| Jun 10, 12:00 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 9 more | 9 hr |
| Jun 10, 2:40 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Champaign, Christian, Coles, Cook, DeWitt and 28 more | 4 hr |
| Jun 10, 8:24 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Champaign, Christian, Clark, Coles, Cumberland and 19 more | 6 hr |
| Jun 11, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Greene, Jersey, Macoupin, Madison, Monroe and 1 more | 8 hr |
| Jun 11, 8:47 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Clay, Crawford, Cumberland, Effingham, Jasper and 2 more | 5 hr |
| Jun 16, 3:07 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Clark, Clay, Coles, Crawford, Cumberland and 9 more | 7 hr |
| Jun 17, 3:55 AM CDT | Severe Thunderstorm Watch | SPC | Carroll, Henderson, Henry, Jo Daviess, Mercer, Rock Island and 2 more | 7 hr |
| Jun 24, 1:55 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 18 more | 8 hr |
| Jun 27, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 8 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Carroll County3
- Henry County3
- Jo Daviess County3
- Rock Island County3
- Whiteside County3
- Champaign County3
- Coles County3
- Douglas County3
- Edgar County3
- Kankakee County3
- Moultrie County3
- Shelby County3
- Vermilion County3
- Will County3
- Clark County3
- Cumberland County3
- Calhoun County2
- Jersey County2
- Madison County2
- Monroe County2
- Saint Clair County2
- Boone County2
- Bureau County2
- DeKalb County2
- Lee County2
- McHenry County2
- Mercer County2
- Ogle County2
- Putnam County2
- Stephenson County2
- Winnebago County2
- Cass County2
- Christian County2
- Cook County2
- DeWitt County2
- DuPage County2
- Ford County2
- Grundy County2
- Iroquois County2
- Kane County2
43 more counties
- Kendall County2
- Lake County2
- LaSalle County2
- Livingston County2
- Logan County2
- McLean County2
- Macon County2
- Mason County2
- Menard County2
- Morgan County2
- Piatt County2
- Sangamon County2
- Tazewell County2
- Clay County2
- Crawford County2
- Effingham County2
- Jasper County2
- Lawrence County2
- Richland County2
- Clinton County1
- Randolph County1
- Washington County1
- Marshall County1
- Scott County1
- Woodford County1
- Greene County1
- Macoupin County1
- Henderson County1
- Warren County1
- Alexander County1
- Edwards County1
- Gallatin County1
- Hamilton County1
- Hardin County1
- Johnson County1
- Massac County1
- Pope County1
- Pulaski County1
- Saline County1
- Union County1
- Wabash County1
- Wayne County1
- White County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.