Alert archive / Illinois / Mesoscale Discussions / 2021
Mesoscale Discussions in Illinois, March 2021
9 mesoscale discussions in March 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 March 2021. Tap one for its archive.
- Mesoscale Discussions
- 9
- Busiest day
- March 27, 20212 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 11, 1:26 PM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 3 hr |
| Mar 15, 2:49 PM CDT | Mesoscale Discussion | SPC | Monroe | 116 min |
| Mar 17, 8:51 AM CDT | Mesoscale Discussion | SPC | Calhoun | 84 min |
| Mar 23, 12:44 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Hancock, Pike | 2 hr |
| Mar 23, 7:31 PM CDT | Mesoscale Discussion | SPC | Brown, Calhoun, Greene, Jersey, Pike, Schuyler and 1 more | 89 min |
| Mar 25, 2:33 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 15 more | 117 min |
| Mar 27, 2:34 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Greene, Jersey and 5 more | 116 min |
| Mar 27, 6:16 PM CDT | Mesoscale Discussion | SPC | Bond, Christian, Clark, Clay, Clinton, Coles and 21 more | 89 min |
| Mar 27, 7:58 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Clinton, Edwards, Effingham, Franklin and 16 more | 92 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Jackson County4
- Perry County4
- Calhoun County4
- Alexander County3
- Franklin County3
- Hamilton County3
- Johnson County3
- Pulaski County3
- Randolph County3
- Saline County3
- Union County3
- White County3
- Williamson County3
- Monroe County3
- Brown County3
- Pike County3
- Jersey County3
- Jefferson County3
- Gallatin County2
- Hardin County2
- Massac County2
- Pope County2
- Adams County2
- Greene County2
- Scott County2
- Edwards County2
- Richland County2
- Wayne County2
- Macoupin County2
- Clay County2
- Clinton County2
- Effingham County2
- Marion County2
- Saint Clair County2
- Washington County2
- Hancock County1
- Schuyler County1
- Lawrence County1
- Wabash County1
- Cass 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.