Alert archive / Illinois / Mesoscale Discussions / 2018
Mesoscale Discussions in Illinois, April 2018
6 mesoscale discussions in April 2018. 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 2018. Tap one for its archive.
- Mesoscale Discussions
- 6
- Busiest day
- April 3, 20183 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 |
|---|---|---|---|---|
| Apr 1, 1:38 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Fulton, Greene and 8 more | 4 hr |
| Apr 2, 10:46 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Edwards, Effingham, Fayette and 21 more | 119 min |
| Apr 3, 12:57 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Clinton, Edwards, Effingham, Fayette and 24 more | 2 hr |
| Apr 3, 3:34 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Coles, Crawford and 32 more | 86 min |
| Apr 13, 8:42 PM CDT | Mesoscale Discussion | SPC | Monroe, Randolph | 63 min |
| Apr 13, 10:11 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clinton, Effingham, Fayette and 7 more | 64 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Clinton County4
- Effingham County4
- Fayette County4
- Marion County4
- Monroe County4
- Randolph County4
- Bond County3
- Clay County3
- Edwards County3
- Franklin County3
- Hamilton County3
- Jackson County3
- Jefferson County3
- Perry County3
- Richland County3
- Saint Clair County3
- Saline County3
- Wabash County3
- Washington County3
- Wayne County3
- White County3
- Williamson County3
- Calhoun County2
- Greene County2
- Jersey County2
- Lawrence County2
- Macoupin County2
- Madison County2
- Montgomery County2
- Alexander County2
- Gallatin County2
- Hardin County2
- Jasper County2
- Johnson County2
- Massac County2
- Pope County2
- Pulaski County2
- Union County2
- Shelby County2
- Adams County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.