Alert archive / Illinois / Mesoscale Discussions / 2024
Mesoscale Discussions in Illinois, August 2024
21 mesoscale discussions in August 2024. 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 2024. Tap one for its archive.
- Mesoscale Discussions
- 21
- Busiest day
- August 16, 20247 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 1, 2:19 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Christian, Fayette, Greene and 12 more | 86 min |
| Aug 1, 11:18 AM CDT | Mesoscale Discussion | SPC | Clay, Clinton, Crawford, Edwards, Effingham, Fayette and 18 more | 87 min |
| Aug 1, 2:51 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin | 84 min |
| Aug 5, 5:09 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 13 more | 66 min |
| Aug 5, 9:40 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 65 min |
| Aug 5, 11:38 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Stephenson | 37 min |
| Aug 6, 2:26 AM CDT | Mesoscale Discussion | SPC | Boone, Lake, McHenry | 2 hr |
| Aug 15, 4:01 PM CDT | Mesoscale Discussion | SPC | Monroe, Randolph | 2 hr |
| Aug 15, 7:13 PM CDT | Mesoscale Discussion | SPC | Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson and 7 more | 92 min |
| Aug 15, 8:47 PM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Johnson, Massac, Monroe, Perry and 6 more | 118 min |
| Aug 15, 8:51 PM CDT | Mesoscale Discussion | SPC | Bureau, Fulton, Hancock, Henderson, Henry, Knox and 8 more | 84 min |
| Aug 15, 11:34 PM CDT | Mesoscale Discussion | SPC | DeWitt, Fulton, Livingston, Logan, McDonough, McLean and 10 more | 86 min |
| Aug 16, 1:19 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Champaign, Christian, Coles and 33 more | 116 min |
| Aug 16, 1:53 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Jo Daviess, McHenry, Stephenson, Winnebago | 3 hr |
| Aug 16, 5:31 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Kane and 8 more | 119 min |
| Aug 27, 11:25 AM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Kane, Kendall and 6 more | 3 hr |
| Aug 27, 4:47 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 24 more | 88 min |
| Aug 27, 5:16 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Greene, Jersey, Pike and 1 more | 119 min |
| Aug 27, 6:24 PM CDT | Mesoscale Discussion | SPC | Cook, DuPage, Kane, Lake, McHenry, Will | 96 min |
| Aug 27, 9:39 PM CDT | Mesoscale Discussion | SPC | Fulton, Grundy, Iroquois, Kankakee, Knox, LaSalle and 8 more | 96 min |
| Aug 30, 3:41 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Champaign, Christian, Clark, Clinton and 27 more | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- McHenry County7
- Will County7
- Boone County6
- Lake County6
- Carroll County5
- Cook County5
- DuPage County5
- Kane County5
- Winnebago County5
- Marshall County5
- Peoria County5
- Putnam County5
- Greene County4
- Logan County4
- DeKalb County4
- Grundy County4
- Jo Daviess County4
- Kendall County4
- LaSalle County4
- Lee County4
- Ogle County4
- Fulton County4
- Stark County4
- Livingston County4
- Woodford County4
- Calhoun County3
- Christian County3
- Fayette County3
- Jersey County3
- Macon County3
- Macoupin County3
- Menard County3
- Pike County3
- Sangamon County3
- Scott County3
- Shelby County3
- Gallatin County3
- Hardin County3
- Jackson County3
- Perry County3
62 more counties
- Pope County3
- Williamson County3
- Bureau County3
- Stephenson County3
- Whiteside County3
- Monroe County3
- Randolph County3
- Knox County3
- McDonough County3
- DeWitt County3
- Piatt County3
- Tazewell County3
- Iroquois County3
- Kankakee County3
- Bond County2
- Cass County2
- Madison County2
- Montgomery County2
- Morgan County2
- Clinton County2
- Effingham County2
- Franklin County2
- Hamilton County2
- Jasper County2
- Jefferson County2
- Marion County2
- Saline County2
- Washington County2
- White County2
- Johnson County2
- Union County2
- Saint Clair County2
- Hancock County2
- Henderson County2
- Henry County2
- Mercer County2
- Rock Island County2
- Warren County2
- McLean County2
- Mason County2
- Schuyler County2
- Adams County2
- Brown County2
- Champaign County2
- Coles County2
- Douglas County2
- Ford County2
- Moultrie County2
- Vermilion County2
- Clay County1
- Crawford County1
- Edwards County1
- Lawrence County1
- Richland County1
- Wabash County1
- Wayne County1
- Alexander County1
- Massac County1
- Pulaski County1
- Clark County1
- Cumberland County1
- Edgar County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.