Alert archive / Illinois / Mesoscale Discussions / 2011
Mesoscale Discussions in Illinois, July 2011
37 mesoscale discussions in July 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in July 2011. Tap one for its archive.
- Mesoscale Discussions
- 37
- Busiest day
- July 24, 20115 mesoscale discussions
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 30, 8:07 PM CDT | Mesoscale Discussion | SPC | Cook, DuPage, Lake, Will | 23 min |
| Jun 30, 10:15 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Crawford, Cumberland, Douglas and 7 more | 60 min |
| Jul 2, 1:06 PM CDT | Mesoscale Discussion | SPC | Bureau, Champaign, Cook, DeKalb, DeWitt, DuPage and 26 more | 54 min |
| Jul 2, 6:17 PM CDT | Mesoscale Discussion | SPC | Calhoun, Cass, Champaign, Christian, DeWitt, Douglas and 16 more | 58 min |
| Jul 3, 12:26 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clay, Clinton, Effingham, Fayette and 11 more | 64 min |
| Jul 3, 3:35 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clark, Clay, Clinton, Crawford and 25 more | 55 min |
| Jul 3, 5:19 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clay, Clinton, Edwards, Fayette and 24 more | 26 min |
| Jul 6, 1:38 PM CDT | Mesoscale Discussion | SPC | Monroe | 97 min |
| Jul 7, 7:58 PM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Perry, Randolph, Union | 92 min |
| Jul 10, 2:45 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Champaign, DeKalb, DeWitt and 37 more | 2 hr |
| Jul 11, 5:07 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 17 more | 113 min |
| Jul 11, 7:10 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Cass, Cook, DeKalb, DuPage and 27 more | 95 min |
| Jul 11, 7:50 AM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Cook, DeWitt, Douglas and 14 more | 55 min |
| Jul 11, 5:16 PM CDT | Mesoscale Discussion | SPC | Cass, Champaign, DeWitt, Douglas, Ford, Fulton and 19 more | 59 min |
| Jul 12, 1:00 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 53 more | 2 hr |
| Jul 12, 3:48 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 38 more | 87 min |
| Jul 12, 6:43 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Christian, Clark and 41 more | 62 min |
| Jul 12, 7:04 PM CDT | Mesoscale Discussion | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 86 min |
| Jul 18, 6:30 AM CDT | Mesoscale Discussion | SPC | Boone, DeKalb, Kane, Lake, McHenry, Ogle and 2 more | 2 hr |
| Jul 19, 1:04 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 12 more | 86 min |
| Jul 21, 12:49 PM CDT | Mesoscale Discussion | SPC | DeKalb, DuPage, Kane, Lake, McHenry | 56 min |
| Jul 21, 7:09 PM CDT | Mesoscale Discussion | SPC | Henderson, Knox, Mercer, Rock Island, Warren | 96 min |
| Jul 22, 7:38 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 17 more | 97 min |
| Jul 23, 2:18 PM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Ford, Iroquois, Kankakee, Livingston and 6 more | 87 min |
| Jul 24, 6:15 AM CDT | Mesoscale Discussion | SPC | DeKalb, DuPage, Kane, Kendall, Lee, Ogle and 1 more | 3 hr |
| Jul 24, 11:21 AM CDT | Mesoscale Discussion | SPC | Christian, Fulton, Logan, Macon, Mason, Menard and 1 more | 114 min |
| Jul 24, 12:42 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Edwards, Hamilton, Jefferson and 8 more | 2 hr |
| Jul 24, 12:42 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Edwards, Hamilton, Jefferson and 8 more | 2 hr |
| Jul 24, 4:55 PM CDT | Mesoscale Discussion | SPC | Alexander, Massac, Pulaski | 2 hr |
| Jul 26, 1:11 PM CDT | Mesoscale Discussion | SPC | Bond, Cass, Champaign, Christian, Clark, Clay and 44 more | 94 min |
| Jul 27, 6:54 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, DuPage, Jo Daviess, Kane and 7 more | 66 min |
| Jul 27, 9:43 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 9 more | 62 min |
| Jul 28, 12:36 AM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 10 more | 84 min |
| Jul 28, 5:40 PM CDT | Mesoscale Discussion | SPC | Bureau, Hancock, Henderson, Henry, Knox, Lee and 9 more | 95 min |
| Jul 28, 11:51 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Kane and 9 more | 84 min |
| Jul 29, 3:51 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 2 more | 84 min |
| Jul 30, 12:35 PM CDT | Mesoscale Discussion | SPC | Monroe, Randolph | 85 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- DuPage County13
- DeKalb County13
- Kane County13
- Kendall County12
- Lake County11
- Lee County11
- Ogle County11
- Will County10
- Boone County10
- McHenry County10
- Whiteside County10
- Winnebago County10
- Champaign County9
- Ford County9
- Iroquois County9
- Vermilion County9
- Bond County9
- Clay County9
- Clinton County9
- Marion County9
- Stephenson County9
- Cook County8
- Clark County8
- Douglas County8
- Kankakee County8
- Bureau County8
- DeWitt County8
- LaSalle County8
- Livingston County8
- Logan County8
- McLean County8
- Marshall County8
- Piatt County8
- Putnam County8
- Stark County8
- Macoupin County8
- Jefferson County8
- Madison County8
- Monroe County8
- Washington County8
62 more counties
- Edwards County8
- Richland County8
- Wabash County8
- Wayne County8
- Coles County7
- Cumberland County7
- Fulton County7
- Grundy County7
- Knox County7
- Mason County7
- Menard County7
- Tazewell County7
- Woodford County7
- Calhoun County7
- Jersey County7
- Macon County7
- Sangamon County7
- Fayette County7
- Montgomery County7
- Hamilton County7
- Lawrence County7
- Randolph County7
- White County7
- Carroll County7
- Jo Daviess County7
- Crawford County6
- Edgar County6
- Jasper County6
- Peoria County6
- Cass County6
- Christian County6
- Greene County6
- Moultrie County6
- Effingham County6
- Saint Clair County6
- Perry County6
- Henry County6
- Rock Island County6
- McDonough County5
- Morgan County5
- Pike County5
- Franklin County5
- Shelby County5
- Schuyler County4
- Scott County4
- Jackson County4
- Henderson County4
- Mercer County4
- Warren County4
- Gallatin County3
- Saline County3
- Union County3
- Williamson County3
- Alexander County3
- Hancock County3
- Adams County3
- Brown County3
- Johnson County2
- Pope County2
- Massac County2
- Pulaski County2
- Hardin County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.