Alert archive / Illinois / Mesoscale Discussions / 2012
Mesoscale Discussions in Illinois, April 2012
16 mesoscale discussions in April 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 April 2012. Tap one for its archive.
- Mesoscale Discussions
- 16
- Busiest day
- April 28, 20124 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 |
|---|---|---|---|---|
| Mar 31, 8:52 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, DeKalb, Henderson, Henry, Jo Daviess and 14 more | 53 min |
| Apr 1, 1:33 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Fulton, Grundy and 21 more | 117 min |
| Apr 1, 7:56 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Fulton, Grundy and 21 more | 2 hr |
| Apr 3, 2:17 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Champaign, DeWitt, Douglas and 29 more | 88 min |
| Apr 14, 9:54 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Henry and 12 more | 96 min |
| Apr 15, 4:22 PM CDT | Mesoscale Discussion | SPC | Bond, Brown, Calhoun, Cass, Christian, Clinton and 31 more | 83 min |
| Apr 15, 6:12 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 25 more | 63 min |
| Apr 15, 7:28 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Greene, Jersey and 5 more | 62 min |
| Apr 25, 4:36 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Champaign, Christian, Clark, Clay and 47 more | 84 min |
| Apr 25, 10:11 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 40 more | 2 hr |
| Apr 26, 2:23 AM CDT | Mesoscale Discussion | SPC | Edwards, Franklin, Gallatin, Hamilton, Hardin, Jefferson and 8 more | 97 min |
| Apr 28, 1:17 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clay, Clinton, Crawford, Cumberland and 24 more | 88 min |
| Apr 28, 2:56 PM CDT | Mesoscale Discussion | SPC | Bond, Clark, Clay, Clinton, Crawford, Cumberland and 13 more | 64 min |
| Apr 28, 5:59 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clark, Clay, Clinton, Crawford and 20 more | 2 hr |
| Apr 28, 6:12 PM CDT | Mesoscale Discussion | SPC | Franklin, Hamilton, Jefferson, Monroe, Perry, Randolph and 3 more | 2 hr |
| Apr 30, 12:03 PM CDT | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Crawford, Cumberland, Edgar and 20 more | 117 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Wayne County8
- Jersey County7
- Marion County7
- Edwards County7
- Jefferson County7
- Wabash County7
- LaSalle County6
- Peoria County6
- Bond County6
- Calhoun County6
- Clinton County6
- Fayette County6
- Greene County6
- Macoupin County6
- Madison County6
- Monroe County6
- Montgomery County6
- Saint Clair County6
- Washington County6
- Clay County6
- Crawford County6
- Cumberland County6
- Franklin County6
- Hamilton County6
- Jasper County6
- Lawrence County6
- Richland County6
- Bureau County5
- Carroll County5
- DeKalb County5
- Henry County5
- Kendall County5
- Knox County5
- Lee County5
- Marshall County5
- Ogle County5
- Putnam County5
- Stark County5
- Whiteside County5
- Fulton County5
62 more counties
- McLean County5
- Tazewell County5
- Woodford County5
- Morgan County5
- Perry County5
- Shelby County5
- Clark County5
- Effingham County5
- White County5
- Jo Daviess County4
- Rock Island County4
- Stephenson County4
- Boone County4
- Grundy County4
- Kane County4
- Livingston County4
- McHenry County4
- Winnebago County4
- Brown County4
- Cass County4
- Edgar County4
- Macon County4
- Pike County4
- Schuyler County4
- Scott County4
- Randolph County4
- Gallatin County4
- Saline County4
- Adams County3
- DeWitt County3
- Douglas County3
- Logan County3
- Menard County3
- Piatt County3
- Christian County3
- Jackson County3
- Moultrie County3
- Sangamon County3
- Hardin County3
- Johnson County3
- Pope County3
- Williamson County3
- Warren County2
- Champaign County2
- Ford County2
- Iroquois County2
- Kankakee County2
- Mason County2
- DuPage County2
- Lake County2
- Coles County2
- Massac County2
- Pulaski County2
- Union County2
- Henderson County1
- Mercer County1
- Hancock County1
- McDonough County1
- Vermilion County1
- Cook County1
- Will County1
- Alexander 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. Warning verification from the Mesonet's Cow. Rebuilt daily.