Alert archive / Illinois / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Illinois, 2018
25 severe thunderstorm watches in 2018. 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 2018. Tap one for its archive.
- Severe Thunderstorm Watches
- 25
- Busiest month
- June9 severe thunderstorm watches
- Busiest day
- June 10, 20183 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 |
|---|---|---|---|---|
| May 2, 3:56 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 33 more | 9 hr |
| May 2, 10:51 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Cook, DeKalb, DuPage, Ford, Fulton and 23 more | 4 hr |
| May 2, 11:09 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 5 more | 7 hr |
| May 14, 2:54 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Boone, Brown, Bureau, Calhoun and 59 more | 6 hr |
| May 20, 12:32 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 9 more | 6 hr |
| May 31, 10:31 AM CDT | Severe Thunderstorm Watch | SPC | Clark, Clay, Crawford, Cumberland, Edwards, Effingham and 8 more | 6 hr |
| May 31, 7:56 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 7 hr |
| Jun 9, 7:43 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Henry, Jo Daviess, Lee, Ogle and 5 more | 6 hr |
| Jun 10, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 7 hr |
| Jun 10, 2:56 PM CDT | Severe Thunderstorm Watch | SPC | Edwards, Wabash, Wayne, White | 5 hr |
| Jun 21, 1:39 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 7 hr |
| Jun 26, 9:26 AM CDT | Severe Thunderstorm Watch | SPC | Edwards, Gallatin, Hardin, Massac, Pope, Saline and 2 more | 5 hr |
| Jun 26, 2:22 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 10 more | 6 hr |
| Jun 28, 1:04 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 28 more | 7 hr |
| Jun 28, 5:33 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 7 hr |
| Jul 1, 12:58 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Boone, Bureau, Cass, Champaign, Christian and 49 more | 7 hr |
| Jul 13, 3:54 PM CDT | Severe Thunderstorm Watch | SPC | Jo Daviess, Stephenson | 6 hr |
| Jul 19, 6:49 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 26 more | 7 hr |
| Aug 5, 7:58 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Kane, Lake and 3 more | 83 min |
| Aug 20, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clinton, Edwards, Franklin, Hamilton, Jackson and 16 more | 7 hr |
| Aug 20, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Gallatin, Hardin, Massac, Pope | 6 hr |
| Aug 28, 5:06 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bureau, Carroll, Fulton, Hancock, Henderson and 17 more | 6 hr |
| Aug 28, 7:37 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more | 4 hr |
| Sep 25, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 29 more | 8 hr |
| Oct 6, 1:31 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Douglas, Edgar, Ford, Iroquois, Vermilion | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Fulton County9
- Tazewell County8
- Cook County7
- DeKalb County7
- DuPage County7
- Kane County7
- Lee County7
- Ogle County7
- Peoria County7
- Winnebago County7
- Woodford County7
- Mason County7
- Schuyler County7
- Gallatin County7
- Hardin County7
- Massac County7
- Pope County7
- White County7
- Boone County6
- Bureau County6
- Grundy County6
- Hancock County6
- Kendall County6
- Knox County6
- Lake County6
- LaSalle County6
- McDonough County6
- McHenry County6
- Marshall County6
- Putnam County6
- Stark County6
- Will County6
- Cass County6
- Menard County6
- Morgan County6
- Sangamon County6
- Scott County6
- Macoupin County6
- Saint Clair County6
- Alexander County6
62 more counties
- Johnson County6
- Pulaski County6
- Saline County6
- Union County6
- Ford County5
- Henderson County5
- Henry County5
- Iroquois County5
- Jo Daviess County5
- Kankakee County5
- Livingston County5
- McLean County5
- Rock Island County5
- Stephenson County5
- Warren County5
- Whiteside County5
- Logan County5
- Adams County5
- Greene County5
- Madison County5
- Monroe County5
- Randolph County5
- Christian County5
- Fayette County5
- Montgomery County5
- Shelby County5
- Franklin County5
- Hamilton County5
- Jackson County5
- Perry County5
- Williamson County5
- Edwards County5
- Effingham County5
- Wabash County5
- Carroll County4
- Mercer County4
- Brown County4
- Calhoun County4
- Jersey County4
- Pike County4
- Bond County4
- Champaign County4
- Clinton County4
- Clay County4
- Cumberland County4
- Wayne County4
- DeWitt County3
- Macon County3
- Moultrie County3
- Piatt County3
- Clark County3
- Jasper County3
- Richland County3
- Douglas County3
- Edgar County3
- Vermilion County3
- Marion County3
- Washington County3
- Crawford County2
- Lawrence County2
- Coles County2
- Jefferson County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.