Alert archive / Illinois / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Illinois, 2011
61 severe thunderstorm watches in 2011. 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 2011. Tap one for its archive.
- Severe Thunderstorm Watches
- 61
- Busiest month
- June24 severe thunderstorm watches
- Busiest day
- June 26, 20114 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 |
|---|---|---|---|---|
| Feb 27, 5:33 PM CST | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, DeWitt, Fulton, Logan and 12 more | 4 hr |
| Mar 4, 1:33 PM CST | Severe Thunderstorm Watch | SPC | Calhoun | 5 hr |
| Mar 4, 6:50 PM CST | Severe Thunderstorm Watch | SPC | Bond, Clinton, Fayette, Madison, Marion, Monroe and 3 more | 7 hr |
| Apr 3, 8:11 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Fulton, Greene and 12 more | 6 hr |
| Apr 3, 8:54 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more | 5 hr |
| Apr 9, 7:25 AM CDT | Severe Thunderstorm Watch | SPC | Edwards, Gallatin, Hamilton, Hardin, Johnson, Massac and 6 more | 6 hr |
| Apr 19, 3:11 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 30 more | 7 hr |
| Apr 22, 1:31 PM CDT | Severe Thunderstorm Watch | SPC | Edwards, Franklin, Gallatin, Hamilton, Jefferson, Saline and 4 more | 4 hr |
| Apr 23, 5:38 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Johnson, Pulaski, Union | 6 hr |
| Apr 27, 12:42 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 5 hr |
| May 7, 2:59 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Clark, Coles, DeWitt, Douglas, Edgar and 18 more | 7 hr |
| May 11, 1:23 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cass, DeKalb, DeWitt and 33 more | 6 hr |
| May 11, 5:56 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 5 hr |
| May 13, 12:31 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 6 hr |
| May 23, 10:55 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Clinton, Edwards, Fayette and 27 more | 7 hr |
| May 23, 12:54 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Clark, Clay, Coles, Crawford and 13 more | 5 hr |
| May 24, 1:38 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 4 more | 5 hr |
| May 28, 2:25 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Clark, Coles, Crawford, Cumberland and 10 more | 5 hr |
| May 29, 8:53 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 33 more | 6 hr |
| May 31, 2:33 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Coles, Cook, DeWitt, Douglas and 21 more | 7 hr |
| Jun 4, 2:08 PM CDT | Severe Thunderstorm Watch | SPC | Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 6 more | 7 hr |
| Jun 4, 4:53 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Champaign, Christian, Clark, Coles, Cumberland and 25 more | 6 hr |
| Jun 5, 5:00 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 37 more | 7 hr |
| Jun 6, 7:00 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Lake, McHenry | 5 hr |
| Jun 8, 4:49 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 9 more | 8 hr |
| Jun 9, 4:43 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Pike | 5 hr |
| Jun 10, 1:02 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Clark, Clay, Clinton, Coles, Crawford and 13 more | 7 hr |
| Jun 10, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 9 more | 7 hr |
| Jun 10, 6:08 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Christian, DeWitt, Fulton, Knox, Logan and 13 more | 6 hr |
| Jun 13, 5:16 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 5 more | 8 hr |
| Jun 15, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | Monroe, Randolph, Saint Clair | 4 hr |
| Jun 17, 1:40 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Edwards, Franklin, Gallatin, Hamilton, Hardin and 10 more | 4 hr |
| Jun 18, 2:44 AM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 9 more | 5 hr |
| Jun 18, 8:26 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clinton, Fayette, Greene, Jackson and 11 more | 8 hr |
| Jun 19, 11:42 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Fulton, Hancock, Henderson, Henry, Knox and 13 more | 6 hr |
| Jun 21, 5:42 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Ford and 23 more | 4 hr |
| Jun 25, 1:06 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Clinton, Fayette, Franklin, Gallatin and 20 more | 3 hr |
| Jun 25, 7:36 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Clinton, Edwards, Fayette and 27 more | 6 hr |
| Jun 25, 9:30 PM CDT | Severe Thunderstorm Watch | SPC | Christian, Clay, Crawford, Cumberland, Effingham, Jasper and 4 more | 5 hr |
| Jun 26, 1:58 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 12 more | 4 hr |
| Jun 26, 2:24 PM CDT | Severe Thunderstorm Watch | SPC | Monroe, Randolph | 5 hr |
| Jun 26, 7:12 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 35 more | 6 hr |
| Jun 26, 10:02 PM CDT | Severe Thunderstorm Watch | SPC | Hancock, Henderson, McDonough, Mercer, Rock Island, Warren | 5 hr |
| Jun 27, 1:32 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 43 more | 7 hr |
| Jun 30, 8:15 PM CDT | Severe Thunderstorm Watch | SPC | Cook, DuPage, Iroquois, Kankakee, Lake, Will | 4 hr |
| Jul 2, 2:50 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Champaign, Christian and 26 more | 7 hr |
| Jul 3, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clay, Clinton, Crawford, Edwards and 22 more | 6 hr |
| Jul 7, 5:03 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Clinton, Fayette, Jackson, Madison and 8 more | 7 hr |
| Jul 11, 3:30 AM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Henry, Jo Daviess, Mercer, Putnam and 3 more | 6 hr |
| Jul 11, 5:37 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more | 6 hr |
| Jul 12, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 49 more | 7 hr |
| Jul 19, 11:27 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DuPage, Kane, Lake, McHenry | 2 hr |
| Aug 2, 5:22 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 9 hr |
| Aug 4, 8:06 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Pulaski | 4 hr |
| Aug 6, 10:14 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Hancock, Henderson, McDonough, Mercer and 3 more | 5 hr |
| Aug 7, 5:41 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Clinton, Edwards, Franklin and 23 more | 6 hr |
| Aug 8, 5:38 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Champaign, DeWitt, Ford, Fulton, Grundy and 19 more | 5 hr |
| Aug 13, 12:12 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Clark, Coles, Cook, Cumberland and 32 more | 9 hr |
| Aug 24, 6:08 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Brown, Calhoun, Cass, Champaign, Christian and 39 more | 6 hr |
| Sep 3, 12:48 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Jo Daviess, McHenry, Stephenson, Winnebago | 6 hr |
| Sep 3, 3:05 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Cook, DuPage, Ford, Fulton, Grundy and 23 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Monroe County20
- Saint Clair County20
- Calhoun County19
- Madison County18
- Bond County17
- Clinton County17
- Marion County17
- Randolph County17
- Washington County17
- Tazewell County16
- Fayette County16
- Greene County16
- Jersey County16
- Fulton County15
- McLean County15
- Peoria County15
- Pike County15
- Kankakee County15
- Macon County15
- Macoupin County15
- Brown County14
- Logan County14
- Mason County14
- Sangamon County14
- Woodford County14
- Grundy County14
- Christian County14
- Adams County13
- DeWitt County13
- Menard County13
- Schuyler County13
- Cook County13
- DuPage County13
- Kane County13
- LaSalle County13
- Will County13
- Shelby County13
- Iroquois County13
- Cass County12
- Marshall County12
62 more counties
- Kendall County12
- Lake County12
- McHenry County12
- Coles County12
- Effingham County12
- Montgomery County12
- Moultrie County12
- Ford County12
- Livingston County12
- Morgan County11
- Scott County11
- Knox County11
- Boone County11
- Pulaski County11
- Clay County11
- Cumberland County11
- Edgar County11
- Champaign County11
- Douglas County11
- Piatt County11
- Vermilion County11
- McDonough County11
- Stark County10
- DeKalb County10
- Hamilton County10
- Johnson County10
- Clark County10
- Crawford County10
- Jasper County10
- Lawrence County10
- Richland County10
- Alexander County10
- Hancock County10
- Lee County9
- Winnebago County9
- Gallatin County9
- Hardin County9
- Pope County9
- Saline County9
- Wayne County9
- White County9
- Franklin County9
- Jefferson County9
- Union County9
- Perry County9
- Ogle County8
- Edwards County8
- Massac County8
- Wabash County8
- Williamson County8
- Henderson County8
- Mercer County8
- Warren County8
- Jackson County8
- Bureau County7
- Putnam County7
- Rock Island County7
- Stephenson County6
- Henry County5
- Jo Daviess County5
- Whiteside County5
- Carroll County4
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.