Alert archive / Illinois / Mesoscale Discussions / 2011
Mesoscale Discussions in Illinois, August 2011
24 mesoscale discussions in August 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 August 2011. Tap one for its archive.
- Mesoscale Discussions
- 24
- Busiest day
- August 8, 20114 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 |
|---|---|---|---|---|
| Aug 2, 6:19 AM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Kane, Kendall and 4 more | 86 min |
| Aug 2, 12:57 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 20 more | 93 min |
| Aug 2, 8:34 PM CDT | Mesoscale Discussion | SPC | Cook, DeKalb, DuPage, Grundy, Kane, Kankakee and 4 more | 86 min |
| Aug 2, 11:25 PM CDT | Mesoscale Discussion | SPC | Iroquois | 95 min |
| Aug 3, 12:26 PM CDT | Mesoscale Discussion | SPC | Pope | 64 min |
| Aug 4, 6:04 AM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Johnson, Monroe, Perry, Pulaski and 3 more | 86 min |
| Aug 4, 10:21 AM CDT | Mesoscale Discussion | SPC | Alexander | 84 min |
| Aug 6, 11:06 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Fulton, Hancock, Henderson, McDonough and 4 more | 114 min |
| Aug 7, 11:14 AM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Crawford, Cumberland, Douglas and 8 more | 2 hr |
| Aug 7, 5:20 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clinton, Franklin, Jackson, Jefferson and 10 more | 115 min |
| Aug 7, 8:27 PM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Johnson, Massac, Pulaski, Randolph and 1 more | 2 hr |
| Aug 7, 10:54 PM CDT | Mesoscale Discussion | SPC | Alexander, Massac, Pulaski | 96 min |
| Aug 8, 1:06 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Grundy, Henderson and 19 more | 84 min |
| Aug 8, 5:23 PM CDT | Mesoscale Discussion | SPC | Bureau, Cass, Champaign, Christian, DeWitt, Ford and 21 more | 67 min |
| Aug 8, 7:27 PM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Ford, Iroquois, Kankakee, Livingston and 7 more | 93 min |
| Aug 9, 12:17 PM CDT | Mesoscale Discussion | SPC | Champaign, Christian, Coles, DeWitt, Douglas, Edgar and 14 more | 58 min |
| Aug 13, 11:45 AM CDT | Mesoscale Discussion | SPC | Bureau, Champaign, Cook, DeKalb, DuPage, Ford and 16 more | 60 min |
| Aug 13, 3:29 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 21 more | 91 min |
| Aug 13, 6:10 PM CDT | Mesoscale Discussion | SPC | Clark, Coles, Cumberland, Douglas, Edgar, Shelby and 1 more | 95 min |
| Aug 17, 3:44 PM CDT | Mesoscale Discussion | SPC | Adams, Boone, Brown, Bureau, Calhoun, Carroll and 47 more | 91 min |
| Aug 18, 2:40 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Crawford, Edwards, Franklin, Gallatin and 18 more | 2 hr |
| Aug 20, 11:04 AM CDT | Mesoscale Discussion | SPC | Kankakee | 116 min |
| Aug 24, 3:46 PM CDT | Mesoscale Discussion | SPC | Cass, Champaign, Christian, DeWitt, Douglas, Edgar and 18 more | 89 min |
| Aug 24, 8:56 PM CDT | Mesoscale Discussion | SPC | Bond, Clark, Clay, Clinton, Coles, Crawford and 18 more | 94 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Kankakee County7
- Iroquois County7
- Champaign County7
- Piatt County7
- Vermilion County7
- Ford County7
- McLean County7
- DeKalb County6
- Kane County6
- Kendall County6
- LaSalle County6
- Livingston County6
- Douglas County6
- Edgar County6
- Macon County6
- DeWitt County6
- DuPage County5
- Bureau County5
- Marshall County5
- Putnam County5
- Stark County5
- Grundy County5
- Alexander County5
- Coles County5
- Moultrie County5
- Shelby County5
- Woodford County5
- Christian County5
- Logan County5
- Menard County5
- Sangamon County5
- Boone County4
- Cook County4
- Lake County4
- McHenry County4
- Ogle County4
- Winnebago County4
- Henderson County4
- Knox County4
- Mercer County4
62 more counties
- Warren County4
- Jackson County4
- Pulaski County4
- Union County4
- Fulton County4
- Clark County4
- Crawford County4
- Cumberland County4
- Jasper County4
- Peoria County4
- Mason County4
- Morgan County4
- Tazewell County4
- Carroll County3
- Henry County3
- Lee County3
- Rock Island County3
- Stephenson County3
- Whiteside County3
- Will County3
- Johnson County3
- Perry County3
- Randolph County3
- Williamson County3
- Schuyler County3
- Effingham County3
- Bond County3
- Clinton County3
- Jefferson County3
- Marion County3
- Massac County3
- Cass County3
- Clay County3
- Jo Daviess County2
- Pope County2
- Monroe County2
- Adams County2
- Brown County2
- Hancock County2
- McDonough County2
- Pike County2
- Calhoun County2
- Franklin County2
- Madison County2
- Montgomery County2
- Fayette County2
- Edwards County2
- Hamilton County2
- Lawrence County2
- Richland County2
- Wabash County2
- Wayne County2
- White County2
- Jersey County1
- Saint Clair County1
- Washington County1
- Macoupin County1
- Greene County1
- Scott County1
- Gallatin County1
- Hardin County1
- Saline 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. Rebuilt daily.