Alert archive / Illinois / Mesoscale Discussions / 2012
Mesoscale Discussions in Illinois, September 2012
31 mesoscale discussions in September 2012. 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 September 2012. Tap one for its archive.
- Mesoscale Discussions
- 31
- Busiest day
- September 5, 20127 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 31, 9:05 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Brown, Calhoun, Cass, Champaign and 39 more | 55 min |
| Sep 1, 12:41 PM CDT | Mesoscale Discussion | SPC | Bond, Cass, Champaign, Christian, Clay, Clinton and 36 more | 64 min |
| Sep 1, 3:30 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Christian, Clark, Clay, Clinton and 51 more | 60 min |
| Sep 1, 5:43 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hamilton, Hardin, Johnson, Massac and 7 more | 92 min |
| Sep 1, 7:13 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Edgar, Vermilion | 62 min |
| Sep 1, 7:56 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin, Massac, Pope, White | 94 min |
| Sep 4, 6:39 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 66 min |
| Sep 4, 8:30 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 60 min |
| Sep 5, 1:14 AM CDT | Mesoscale Discussion | SPC | Carroll, Henry, Jo Daviess, Rock Island, Stephenson, Whiteside and 1 more | 91 min |
| Sep 5, 3:43 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Grundy, Henderson and 21 more | 92 min |
| Sep 5, 9:04 AM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clark, Clay, Clinton, Crawford and 28 more | 86 min |
| Sep 5, 1:10 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin, Johnson, Massac, Pope | 65 min |
| Sep 5, 2:13 PM CDT | Mesoscale Discussion | SPC | Alexander, Massac, Pulaski | 2 hr |
| Sep 5, 4:02 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 7 more | 88 min |
| Sep 6, 2:03 PM CDT | Mesoscale Discussion | SPC | Jackson, Monroe, Randolph, Saint Clair | 57 min |
| Sep 6, 3:37 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Hardin, Jackson, Johnson, Massac and 10 more | 83 min |
| Sep 6, 6:29 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hardin, Jackson, Jefferson and 9 more | 91 min |
| Sep 7, 10:09 AM CDT | Mesoscale Discussion | SPC | Clark, Coles, Crawford, Cumberland, Douglas, Edgar and 5 more | 2 hr |
| Sep 7, 3:22 PM CDT | Mesoscale Discussion | SPC | Cass, Champaign, Christian, Clark, Coles, Crawford and 23 more | 53 min |
| Sep 7, 3:44 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more | 2 hr |
| Sep 7, 6:06 PM CDT | Mesoscale Discussion | SPC | Bond, Clinton, Madison, Monroe, Randolph, Saint Clair and 1 more | 84 min |
| Sep 7, 7:39 PM CDT | Mesoscale Discussion | SPC | Bond, Christian, Clark, Clay, Clinton, Coles and 17 more | 66 min |
| Sep 7, 8:24 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hamilton, Hardin, Johnson, Massac and 6 more | 96 min |
| Sep 17, 1:30 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, Kane, Lake, Lee and 5 more | 60 min |
| Sep 21, 1:36 PM CDT | Mesoscale Discussion | SPC | Bureau, Cass, Champaign, Christian, Clark, Clay and 40 more | 84 min |
| Sep 21, 4:59 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Crawford, Cumberland, Edwards and 23 more | 91 min |
| Sep 21, 6:30 PM CDT | Mesoscale Discussion | SPC | Clark, Clay, Coles, Crawford, Cumberland, Douglas and 10 more | 3 hr |
| Sep 25, 12:51 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clay, Clinton, Crawford, Edwards and 33 more | 114 min |
| Sep 25, 12:59 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clay, Clinton, Edwards, Effingham and 21 more | 61 min |
| Sep 25, 6:57 PM CDT | Mesoscale Discussion | SPC | Clinton, Edwards, Franklin, Gallatin, Hamilton, Jefferson and 11 more | 93 min |
| Sep 26, 1:26 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more | 94 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Effingham County12
- Jackson County12
- Jasper County12
- Williamson County12
- White County12
- Saline County12
- Franklin County11
- Johnson County11
- Washington County11
- Gallatin County11
- Hardin County11
- Massac County11
- Pope County11
- Alexander County10
- Clay County10
- Clinton County10
- Cumberland County10
- Jefferson County10
- Perry County10
- Pulaski County10
- Randolph County10
- Saint Clair County10
- Union County10
- Hamilton County10
- Richland County10
- Wayne County10
- Bond County9
- Fayette County9
- Marion County9
- Montgomery County9
- Shelby County9
- Crawford County9
- Coles County8
- Moultrie County8
- Clark County8
- Edwards County8
- Douglas County7
- Lawrence County7
- Monroe County7
- Wabash County7
58 more counties
- Christian County6
- Madison County6
- Edgar County6
- Champaign County5
- DeWitt County5
- Logan County5
- Macon County5
- Macoupin County5
- Mason County5
- Menard County5
- Morgan County5
- Piatt County5
- Sangamon County5
- Peoria County5
- Tazewell County5
- Woodford County5
- Jo Daviess County5
- Cass County4
- Fulton County4
- Knox County4
- McLean County4
- Marshall County4
- Vermilion County4
- Carroll County4
- Stephenson County4
- Winnebago County4
- Calhoun County3
- Jersey County3
- Stark County3
- Warren County3
- Henry County3
- Rock Island County3
- Whiteside County3
- Boone County3
- DeKalb County3
- Kane County3
- Lee County3
- McHenry County3
- Ogle County3
- Greene County2
- Pike County2
- Scott County2
- Bureau County2
- LaSalle County2
- Mercer County2
- Putnam County2
- Lake County2
- Ford County2
- Brown County1
- Schuyler County1
- Grundy County1
- Henderson County1
- Kendall County1
- Cook County1
- DuPage County1
- Iroquois County1
- Livingston County1
- McDonough County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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.