Alert archive / Illinois / Mesoscale Discussions / 2021
Mesoscale Discussions in Illinois, May 2021
15 mesoscale discussions in May 2021. 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 May 2021. Tap one for its archive.
- Mesoscale Discussions
- 15
- Busiest day
- May 27, 20215 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 |
|---|---|---|---|---|
| May 3, 2:08 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 55 more | 67 min |
| May 3, 4:51 PM CDT | Mesoscale Discussion | SPC | Monroe, Randolph, Saint Clair | 84 min |
| May 3, 5:15 PM CDT | Mesoscale Discussion | SPC | Bond, Brown, Calhoun, Cass, Champaign, Christian and 38 more | 90 min |
| May 4, 1:06 AM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more | 114 min |
| May 4, 4:17 AM CDT | Mesoscale Discussion | SPC | Massac | 88 min |
| May 6, 9:52 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clinton, Greene, Jersey, Macoupin and 7 more | 83 min |
| May 6, 10:05 AM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 85 min |
| May 6, 12:02 PM CDT | Mesoscale Discussion | SPC | Alexander, Hardin, Jackson, Johnson, Massac, Pope and 4 more | 118 min |
| May 6, 1:10 PM CDT | Mesoscale Discussion | SPC | Champaign, Christian, Coles, Cumberland, DeWitt, Douglas and 10 more | 2 hr |
| May 16, 5:49 PM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Jersey, Pike | 86 min |
| May 27, 11:04 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clinton, Coles, Effingham and 18 more | 86 min |
| May 27, 12:57 PM CDT | Mesoscale Discussion | SPC | Bond, Christian, Clinton, Effingham, Fayette, Jersey and 12 more | 93 min |
| May 27, 2:20 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Effingham, Fayette and 16 more | 85 min |
| May 27, 3:38 PM CDT | Mesoscale Discussion | SPC | Clay, Crawford, Edwards, Franklin, Hamilton, Jackson and 14 more | 67 min |
| May 27, 5:21 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hamilton, Hardin, Johnson, Massac and 6 more | 114 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Monroe County7
- Saint Clair County7
- Bond County6
- Clinton County6
- Effingham County6
- Jersey County6
- Madison County6
- Marion County6
- Montgomery County6
- Randolph County6
- Washington County6
- Jackson County6
- Union County6
- Williamson County6
- Calhoun County5
- Christian County5
- Fayette County5
- Greene County5
- Macoupin County5
- Moultrie County5
- Perry County5
- Shelby County5
- Alexander County5
- Hamilton County5
- Johnson County5
- Massac County5
- Pulaski County5
- Saline County5
- Coles County4
- Jefferson County4
- Macon County4
- Sangamon County4
- Wayne County4
- Franklin County4
- Hardin County4
- Pope County4
- White County4
- Champaign County3
- Clay County3
- Cumberland County3
41 more counties
- DeWitt County3
- Douglas County3
- Ford County3
- Menard County3
- Morgan County3
- Piatt County3
- Pike County3
- Scott County3
- Gallatin County3
- Brown County2
- Cass County2
- Edgar County2
- Fulton County2
- Jasper County2
- Knox County2
- Logan County2
- McDonough County2
- McLean County2
- Marshall County2
- Mason County2
- Peoria County2
- Richland County2
- Schuyler County2
- Stark County2
- Tazewell County2
- Warren County2
- Woodford County2
- Adams County1
- Clark County1
- Hancock County1
- Henderson County1
- Henry County1
- Livingston County1
- Mercer County1
- Putnam County1
- Iroquois County1
- Vermilion County1
- Crawford County1
- Edwards County1
- Lawrence County1
- Wabash County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.