Alert archive / Illinois / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Illinois, 2009
45 severe thunderstorm watches in 2009. 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 2009. Tap one for its archive.
- Severe Thunderstorm Watches
- 45
- Busiest month
- June22 severe thunderstorm watches
- Busiest day
- June 18, 20094 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 26, 5:19 PM CST | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 4 more | 7 hr |
| Feb 26, 8:46 PM CST | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Jackson, Jefferson, Johnson, Perry and 5 more | 6 hr |
| Apr 9, 10:52 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 4 hr |
| Apr 30, 5:10 PM CDT | Severe Thunderstorm Watch | SPC | Gallatin, Hardin, Massac, Pope | 5 hr |
| May 7, 6:14 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 39 more | 8 hr |
| May 7, 10:17 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 9 more | 8 hr |
| May 8, 6:10 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 13 more | 4 hr |
| May 13, 9:56 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Cass, Christian, Clark, Clay and 27 more | 6 hr |
| May 13, 10:51 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Cook, DeWitt, DuPage, Ford, Grundy and 12 more | 4 hr |
| May 14, 1:01 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 5 hr |
| May 15, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Randolph | 6 hr |
| May 30, 3:49 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Christian, Clark, Clay, Clinton, Coles and 20 more | 11 hr |
| Jun 1, 2:37 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Champaign, Cook, DeKalb, DeWitt, DuPage and 32 more | 7 hr |
| Jun 2, 12:27 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 54 more | 8 hr |
| Jun 7, 11:09 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Hancock, Henderson, McDonough, Mercer and 1 more | 6 hr |
| Jun 8, 1:23 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Grundy and 10 more | 6 hr |
| Jun 8, 4:33 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Champaign, Christian, Clark, Clay and 37 more | 5 hr |
| Jun 9, 3:41 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Johnson, Massac, Pulaski, Union | 7 hr |
| Jun 15, 10:34 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Massac, Pulaski | 7 hr |
| Jun 16, 12:41 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Clinton, Franklin, Jackson and 13 more | 4 hr |
| Jun 16, 10:40 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 10 more | 5 hr |
| Jun 17, 11:53 PM CDT | Severe Thunderstorm Watch | SPC | Hancock, Henderson, McDonough, Mercer, Rock Island, Warren | 6 hr |
| Jun 18, 4:12 AM CDT | Severe Thunderstorm Watch | SPC | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 5 hr |
| Jun 18, 6:30 AM CDT | Severe Thunderstorm Watch | SPC | Edwards, Gallatin, Hamilton, Wabash, Wayne, White | 6 hr |
| Jun 18, 10:11 AM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, DeWitt, Ford, Fulton, Grundy and 21 more | 6 hr |
| Jun 18, 11:30 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Grundy and 12 more | 7 hr |
| Jun 19, 7:14 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 28 more | 7 hr |
| Jun 19, 2:24 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Carroll, Cass and 66 more | 8 hr |
| Jun 20, 1:34 AM CDT | Severe Thunderstorm Watch | SPC | Edwards, Franklin, Gallatin, Hamilton, Jefferson, Saline and 4 more | 4 hr |
| Jun 23, 5:52 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Hancock, Henderson, McDonough, Mercer and 3 more | 4 hr |
| Jun 25, 12:48 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Fulton, Hancock, Henderson, Henry and 19 more | 6 hr |
| Jun 25, 3:57 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 5 hr |
| Jun 27, 2:41 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cass, Champaign, DeKalb and 38 more | 7 hr |
| Jun 27, 5:54 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 5 more | 7 hr |
| Jul 4, 2:10 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Hamilton, Jackson, Johnson, Massac and 7 more | 6 hr |
| Jul 24, 9:51 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, DeWitt, Fulton, Hancock and 18 more | 4 hr |
| Jul 24, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Coles, Douglas, Edgar, Iroquois and 6 more | 3 hr |
| Jul 25, 1:26 AM CDT | Severe Thunderstorm Watch | SPC | Bond, Clark, Clay, Clinton, Crawford, Cumberland and 16 more | 4 hr |
| Aug 4, 4:06 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Greene, Hancock, Jersey and 2 more | 5 hr |
| Aug 4, 7:39 AM CDT | Severe Thunderstorm Watch | SPC | Bond, Cass, Champaign, Christian, Clark, Clay and 37 more | 4 hr |
| Aug 4, 3:09 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 8 more | 7 hr |
| Aug 9, 10:21 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 8 more | 8 hr |
| Aug 9, 5:52 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 11 more | 8 hr |
| Aug 19, 11:26 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Clinton, Fayette, Franklin, Jackson and 12 more | 9 hr |
| Sep 26, 2:27 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 15 more | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Franklin County14
- Alexander County13
- Johnson County13
- Pulaski County13
- Union County13
- Williamson County13
- Jefferson County12
- Perry County12
- Henderson County12
- Lee County12
- Warren County12
- Jackson County11
- Randolph County11
- Gallatin County11
- Hamilton County11
- Massac County11
- Wayne County11
- Knox County11
- Marshall County11
- Mercer County11
- Ogle County11
- Stark County11
- Washington County10
- Edwards County10
- Pope County10
- Saline County10
- Champaign County10
- Lawrence County10
- Piatt County10
- Richland County10
- Peoria County10
- Rock Island County10
- Woodford County10
- Livingston County10
- McDonough County10
- Adams County9
- Brown County9
- Madison County9
- Pike County9
- Hardin County9
62 more counties
- White County9
- Bond County9
- Christian County9
- Clark County9
- Clay County9
- Coles County9
- Crawford County9
- Cumberland County9
- Douglas County9
- Edgar County9
- Effingham County9
- Jasper County9
- Montgomery County9
- Moultrie County9
- Shelby County9
- Vermilion County9
- Wabash County9
- Bureau County9
- Carroll County9
- Putnam County9
- Whiteside County9
- Winnebago County9
- DeWitt County9
- Ford County9
- Grundy County9
- Logan County9
- McLean County9
- Hancock County9
- LaSalle County9
- Macoupin County8
- Monroe County8
- Saint Clair County8
- Cass County8
- Clinton County8
- Fayette County8
- Macon County8
- Marion County8
- Menard County8
- Schuyler County8
- Henry County8
- Jo Daviess County8
- Stephenson County8
- Cook County8
- DuPage County8
- Iroquois County8
- Kankakee County8
- Kendall County8
- Will County8
- DeKalb County8
- Fulton County8
- Kane County8
- Mason County8
- Tazewell County8
- Calhoun County7
- Greene County7
- Jersey County7
- Sangamon County7
- Lake County7
- Boone County7
- McHenry County7
- Morgan County6
- Scott County6
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.